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Old March 28th 08, 09:59 AM posted to microsoft.public.excel.programming
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First recorded activity by ExcelBanter: Mar 2008
Posts: 181
Default XL2002: XY Chart and Image Position...

Hi All,

I have a simple XY graph, plotting 1 point only. This graph is in front of
an image made up of several shapes.

What I would like to do is return the name of the shape that the plot sits
over.

Sounds simple, but where to start?

Any help appreciated.

Trevor

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Old March 28th 08, 02:47 PM posted to microsoft.public.excel.programming
external usenet poster
 
First recorded activity by ExcelBanter: Sep 2006
Posts: 5,600
Default XL2002: XY Chart and Image Position...

Are you saying you have shapes on the worksheet, not on the chart, and
chart's Order is "on top".

Presumably ChartArea's & Plot's Fill are invisible so you can see through to
shapes and pictures, though that's not directly relevant.

Is speed important (say no!)

Regards,
Peter T


"Trevor Williams" wrote in
message ...
Hi All,

I have a simple XY graph, plotting 1 point only. This graph is in front

of
an image made up of several shapes.

What I would like to do is return the name of the shape that the plot sits
over.

Sounds simple, but where to start?

Any help appreciated.

Trevor



  #3   Report Post  
Old March 28th 08, 03:15 PM posted to microsoft.public.excel.programming
external usenet poster
 
First recorded activity by ExcelBanter: Mar 2008
Posts: 181
Default XL2002: XY Chart and Image Position...

ha ha ha, thanks for the response Peter, and no, speed isn't important... (ish)

Yes, shapes exist on the worksheet, and yes the chart order is 'on top'

Regarding visibility, it will probably be the opposite - the chart will be
visible and the shapes won't.

Once the name of the shape which the plot lies within is returned, I will
use a lookup to show a specific screen.

I'll be happy to mail the image to you on a personal e-mail if you think it
will help.

Thanks again

Trevor

"Peter T" wrote:

Are you saying you have shapes on the worksheet, not on the chart, and
chart's Order is "on top".

Presumably ChartArea's & Plot's Fill are invisible so you can see through to
shapes and pictures, though that's not directly relevant.

Is speed important (say no!)

Regards,
Peter T


"Trevor Williams" wrote in
message ...
Hi All,

I have a simple XY graph, plotting 1 point only. This graph is in front

of
an image made up of several shapes.

What I would like to do is return the name of the shape that the plot sits
over.

Sounds simple, but where to start?

Any help appreciated.

Trevor




  #4   Report Post  
Old March 28th 08, 03:57 PM posted to microsoft.public.excel.programming
external usenet poster
 
First recorded activity by ExcelBanter: Sep 2006
Posts: 5,600
Default XL2002: XY Chart and Image Position...

Actually which object is on top and visibility is not relevant. You've got
me curious as to what you're doing with your lookup and how that relates to
a series point whose position is not easy to accurately control. If not
simple to explain I'd be pleased to look at what you're up to (my address is
disguised in the "reply to").

This macro is simplified in a number of respects but hopefully will work.
See comments about "ppp", for distribution to unknown users would require
API's. Uses brute force rather than calculating the point's position, hence
why I asked about speed. Speed could be improved by starting from top left
of the plot, though speed is better than I expected as should be fine to
"skip" pixels.

For testing I suggest make chartarea & Plot fill's invisible with the chart
"on top" so you can see what shape the point is over (you did say a single
series with single a point - right).

Sub SeriesPointOverShape()
Dim b As Boolean
Dim x As Long, y As Long, k As Long
Dim xx As Single, yy As Single
Dim elem As Long, arg1 As Long, arg2 As Long
Dim shp As Shape
Dim cht As Chart
Dim ppp As Single

' normally should get points per pixel with API's but
' but to simplify assume typical ppp for %90+ users at 0.75
ppp = 0.75

' oop pixels from top-leftt of chart until
' the series-1 is found with GetChartElement

Set cht = ActiveSheet.ChartObjects(1).Chart ' CHANGE to suit

xx = CLng(cht.Parent.Width / ppp) ' width in pixels
yy = CLng(cht.Parent.Height / ppp)

For k = 10 To 1 Step -2
'start by looping every 10th pixel to save time
For y = 1 To yy Step k
For x = 1 To xx Step k
Call cht.GetChartElement(x, y, elem, arg1, arg2)
If elem = xlSeries Then
'found the one & only series with single point, exit the loops
'(if need a particular series & point - check arg1 & arg2)
b = True
Exit For
End If
Next
If b Then Exit For
Next
If b Then Exit For
Next

If b Then
'convert chart pixel co-ord to worksheet point co-ord
xx = cht.Parent.Left + x * ppp
yy = cht.Parent.Top + y * ppp

b = False

'loop if/until our co-ord intersects a shape
For Each shp In ActiveSheet.Shapes
If shp.Name < cht.Parent.Name Then
With shp
If xx = .Left Then
If xx <= .Left + .Width Then
If yy = .Top Then
If yy <= .Top + .Height Then
b = True ' got it
Exit For
End If
End If
End If
End If
End With
End If
Next

If b Then MsgBox shp.Name
End If

End Sub

Regards,
Peter T


"Trevor Williams" wrote in
message ...
ha ha ha, thanks for the response Peter, and no, speed isn't important...
(ish)

Yes, shapes exist on the worksheet, and yes the chart order is 'on top'

Regarding visibility, it will probably be the opposite - the chart will be
visible and the shapes won't.

Once the name of the shape which the plot lies within is returned, I will
use a lookup to show a specific screen.

I'll be happy to mail the image to you on a personal e-mail if you think
it
will help.

Thanks again

Trevor

"Peter T" wrote:

Are you saying you have shapes on the worksheet, not on the chart, and
chart's Order is "on top".

Presumably ChartArea's & Plot's Fill are invisible so you can see through
to
shapes and pictures, though that's not directly relevant.

Is speed important (say no!)

Regards,
Peter T


"Trevor Williams" wrote in
message ...
Hi All,

I have a simple XY graph, plotting 1 point only. This graph is in
front

of
an image made up of several shapes.

What I would like to do is return the name of the shape that the plot
sits
over.

Sounds simple, but where to start?

Any help appreciated.

Trevor





  #5   Report Post  
Old March 31st 08, 09:12 AM posted to microsoft.public.excel.programming
external usenet poster
 
First recorded activity by ExcelBanter: Mar 2008
Posts: 181
Default XL2002: XY Chart and Image Position...

Hi Peter - hope you had a good weekend.

The code you've sent works well - thank you...

However, the image that I'm using uses shapes whose thresholds overlap, and
the code seems to use the 'frame' of the shape, not the lines of the shape.
(hope that's clear.)

I couldn't see your disguised e-mail in your message - perhaps it's to well
disquised for me?! - I'd like to send it over to you if the offer's still
there.

Regards

Trevor


"Peter T" wrote:

Actually which object is on top and visibility is not relevant. You've got
me curious as to what you're doing with your lookup and how that relates to
a series point whose position is not easy to accurately control. If not
simple to explain I'd be pleased to look at what you're up to (my address is
disguised in the "reply to").

This macro is simplified in a number of respects but hopefully will work.
See comments about "ppp", for distribution to unknown users would require
API's. Uses brute force rather than calculating the point's position, hence
why I asked about speed. Speed could be improved by starting from top left
of the plot, though speed is better than I expected as should be fine to
"skip" pixels.

For testing I suggest make chartarea & Plot fill's invisible with the chart
"on top" so you can see what shape the point is over (you did say a single
series with single a point - right).

Sub SeriesPointOverShape()
Dim b As Boolean
Dim x As Long, y As Long, k As Long
Dim xx As Single, yy As Single
Dim elem As Long, arg1 As Long, arg2 As Long
Dim shp As Shape
Dim cht As Chart
Dim ppp As Single

' normally should get points per pixel with API's but
' but to simplify assume typical ppp for %90+ users at 0.75
ppp = 0.75

' oop pixels from top-leftt of chart until
' the series-1 is found with GetChartElement

Set cht = ActiveSheet.ChartObjects(1).Chart ' CHANGE to suit

xx = CLng(cht.Parent.Width / ppp) ' width in pixels
yy = CLng(cht.Parent.Height / ppp)

For k = 10 To 1 Step -2
'start by looping every 10th pixel to save time
For y = 1 To yy Step k
For x = 1 To xx Step k
Call cht.GetChartElement(x, y, elem, arg1, arg2)
If elem = xlSeries Then
'found the one & only series with single point, exit the loops
'(if need a particular series & point - check arg1 & arg2)
b = True
Exit For
End If
Next
If b Then Exit For
Next
If b Then Exit For
Next

If b Then
'convert chart pixel co-ord to worksheet point co-ord
xx = cht.Parent.Left + x * ppp
yy = cht.Parent.Top + y * ppp

b = False

'loop if/until our co-ord intersects a shape
For Each shp In ActiveSheet.Shapes
If shp.Name < cht.Parent.Name Then
With shp
If xx = .Left Then
If xx <= .Left + .Width Then
If yy = .Top Then
If yy <= .Top + .Height Then
b = True ' got it
Exit For
End If
End If
End If
End If
End With
End If
Next

If b Then MsgBox shp.Name
End If

End Sub

Regards,
Peter T


"Trevor Williams" wrote in
message ...
ha ha ha, thanks for the response Peter, and no, speed isn't important...
(ish)

Yes, shapes exist on the worksheet, and yes the chart order is 'on top'

Regarding visibility, it will probably be the opposite - the chart will be
visible and the shapes won't.

Once the name of the shape which the plot lies within is returned, I will
use a lookup to show a specific screen.

I'll be happy to mail the image to you on a personal e-mail if you think
it
will help.

Thanks again

Trevor

"Peter T" wrote:

Are you saying you have shapes on the worksheet, not on the chart, and
chart's Order is "on top".

Presumably ChartArea's & Plot's Fill are invisible so you can see through
to
shapes and pictures, though that's not directly relevant.

Is speed important (say no!)

Regards,
Peter T


"Trevor Williams" wrote in
message ...
Hi All,

I have a simple XY graph, plotting 1 point only. This graph is in
front
of
an image made up of several shapes.

What I would like to do is return the name of the shape that the plot
sits
over.

Sounds simple, but where to start?

Any help appreciated.

Trevor







  #6   Report Post  
Old March 31st 08, 10:48 AM posted to microsoft.public.excel.programming
external usenet poster
 
First recorded activity by ExcelBanter: Sep 2006
Posts: 5,600
Default XL2002: XY Chart and Image Position...

Hi Trevor,

My address was in the "Reply to" field of my previous post, though not this
message. Here it is again, without the obvious punctuation -
pmbthornton gmail com

If by "shapes whose thresholds overlap" means overlapping shapes, then the
macro I posted would return the bottom-most of any shape that's over the
same screen position as the XY chart point. Could be adapted to return all
shapes under the point.

Not sure what this means -
" the code seems to use the 'frame' of the shape, not the lines of the
shape."

If you mean when the shape's border is close to the XY-point the macro may
be return incorrectly - indeed as posted that may well be the case, could be
a few pixels out. The reason for that is the macro assumes top-left pixel in
the chart to be same as the chart's object position (for use with
GetChartElement), but it isn't quite due to the chartobject's border.

After posting I tweaked a little and got it almost spot on, also made it a
little faster by only looping pixels in the PlotArea. FWIW I think it's a
really nice little macro that serves no useful purpose, at least that I can
think of ! So I would be interested to see your intentions with it.

Regards,
Peter T



"Trevor Williams" wrote in
message ...
Hi Peter - hope you had a good weekend.

The code you've sent works well - thank you...

However, the image that I'm using uses shapes whose thresholds overlap,

and
the code seems to use the 'frame' of the shape, not the lines of the

shape.
(hope that's clear.)

I couldn't see your disguised e-mail in your message - perhaps it's to

well
disquised for me?! - I'd like to send it over to you if the offer's still
there.

Regards

Trevor


"Peter T" wrote:

Actually which object is on top and visibility is not relevant. You've

got
me curious as to what you're doing with your lookup and how that relates

to
a series point whose position is not easy to accurately control. If not
simple to explain I'd be pleased to look at what you're up to (my

address is
disguised in the "reply to").

This macro is simplified in a number of respects but hopefully will

work.
See comments about "ppp", for distribution to unknown users would

require
API's. Uses brute force rather than calculating the point's position,

hence
why I asked about speed. Speed could be improved by starting from top

left
of the plot, though speed is better than I expected as should be fine to
"skip" pixels.

For testing I suggest make chartarea & Plot fill's invisible with the

chart
"on top" so you can see what shape the point is over (you did say a

single
series with single a point - right).

Sub SeriesPointOverShape()
Dim b As Boolean
Dim x As Long, y As Long, k As Long
Dim xx As Single, yy As Single
Dim elem As Long, arg1 As Long, arg2 As Long
Dim shp As Shape
Dim cht As Chart
Dim ppp As Single

' normally should get points per pixel with API's but
' but to simplify assume typical ppp for %90+ users at 0.75
ppp = 0.75

' oop pixels from top-leftt of chart until
' the series-1 is found with GetChartElement

Set cht = ActiveSheet.ChartObjects(1).Chart ' CHANGE to suit

xx = CLng(cht.Parent.Width / ppp) ' width in pixels
yy = CLng(cht.Parent.Height / ppp)

For k = 10 To 1 Step -2
'start by looping every 10th pixel to save time
For y = 1 To yy Step k
For x = 1 To xx Step k
Call cht.GetChartElement(x, y, elem, arg1, arg2)
If elem = xlSeries Then
'found the one & only series with single point, exit the loops
'(if need a particular series & point - check arg1 & arg2)
b = True
Exit For
End If
Next
If b Then Exit For
Next
If b Then Exit For
Next

If b Then
'convert chart pixel co-ord to worksheet point co-ord
xx = cht.Parent.Left + x * ppp
yy = cht.Parent.Top + y * ppp

b = False

'loop if/until our co-ord intersects a shape
For Each shp In ActiveSheet.Shapes
If shp.Name < cht.Parent.Name Then
With shp
If xx = .Left Then
If xx <= .Left + .Width Then
If yy = .Top Then
If yy <= .Top + .Height Then
b = True ' got it
Exit For
End If
End If
End If
End If
End With
End If
Next

If b Then MsgBox shp.Name
End If

End Sub

Regards,
Peter T


"Trevor Williams" wrote in
message ...
ha ha ha, thanks for the response Peter, and no, speed isn't

important...
(ish)

Yes, shapes exist on the worksheet, and yes the chart order is 'on

top'

Regarding visibility, it will probably be the opposite - the chart

will be
visible and the shapes won't.

Once the name of the shape which the plot lies within is returned, I

will
use a lookup to show a specific screen.

I'll be happy to mail the image to you on a personal e-mail if you

think
it
will help.

Thanks again

Trevor

"Peter T" wrote:

Are you saying you have shapes on the worksheet, not on the chart,

and
chart's Order is "on top".

Presumably ChartArea's & Plot's Fill are invisible so you can see

through
to
shapes and pictures, though that's not directly relevant.

Is speed important (say no!)

Regards,
Peter T


"Trevor Williams" wrote in
message ...
Hi All,

I have a simple XY graph, plotting 1 point only. This graph is in
front
of
an image made up of several shapes.

What I would like to do is return the name of the shape that the

plot
sits
over.

Sounds simple, but where to start?

Any help appreciated.

Trevor







  #7   Report Post  
Old April 1st 08, 02:20 PM posted to microsoft.public.excel.programming
external usenet poster
 
First recorded activity by ExcelBanter: Jul 2006
Posts: 6,582
Default XL2002: XY Chart and Image Position...

I think "'frame' of the shape" means the rectangle circumscribing the shape,
like the square that's outlined by resizing handles when a circle is
selected.

It might be more robust to determine the coordinates of the mouse click, and
use algebraic algorithms to determine what mapped region the click occurred
within.

- Jon
-------
Jon Peltier, Microsoft Excel MVP
Tutorials and Custom Solutions
Peltier Technical Services, Inc. - http://PeltierTech.com
_______


"Peter T" <[email protected] wrote in message
...
Hi Trevor,

My address was in the "Reply to" field of my previous post, though not
this
message. Here it is again, without the obvious punctuation -
pmbthornton gmail com

If by "shapes whose thresholds overlap" means overlapping shapes, then
the
macro I posted would return the bottom-most of any shape that's over the
same screen position as the XY chart point. Could be adapted to return all
shapes under the point.

Not sure what this means -
" the code seems to use the 'frame' of the shape, not the lines of the
shape."

If you mean when the shape's border is close to the XY-point the macro may
be return incorrectly - indeed as posted that may well be the case, could
be
a few pixels out. The reason for that is the macro assumes top-left pixel
in
the chart to be same as the chart's object position (for use with
GetChartElement), but it isn't quite due to the chartobject's border.

After posting I tweaked a little and got it almost spot on, also made it a
little faster by only looping pixels in the PlotArea. FWIW I think it's a
really nice little macro that serves no useful purpose, at least that I
can
think of ! So I would be interested to see your intentions with it.

Regards,
Peter T



"Trevor Williams" wrote in
message ...
Hi Peter - hope you had a good weekend.

The code you've sent works well - thank you...

However, the image that I'm using uses shapes whose thresholds overlap,

and
the code seems to use the 'frame' of the shape, not the lines of the

shape.
(hope that's clear.)

I couldn't see your disguised e-mail in your message - perhaps it's to

well
disquised for me?! - I'd like to send it over to you if the offer's still
there.

Regards

Trevor


"Peter T" wrote:

Actually which object is on top and visibility is not relevant. You've

got
me curious as to what you're doing with your lookup and how that
relates

to
a series point whose position is not easy to accurately control. If not
simple to explain I'd be pleased to look at what you're up to (my

address is
disguised in the "reply to").

This macro is simplified in a number of respects but hopefully will

work.
See comments about "ppp", for distribution to unknown users would

require
API's. Uses brute force rather than calculating the point's position,

hence
why I asked about speed. Speed could be improved by starting from top

left
of the plot, though speed is better than I expected as should be fine
to
"skip" pixels.

For testing I suggest make chartarea & Plot fill's invisible with the

chart
"on top" so you can see what shape the point is over (you did say a

single
series with single a point - right).

Sub SeriesPointOverShape()
Dim b As Boolean
Dim x As Long, y As Long, k As Long
Dim xx As Single, yy As Single
Dim elem As Long, arg1 As Long, arg2 As Long
Dim shp As Shape
Dim cht As Chart
Dim ppp As Single

' normally should get points per pixel with API's but
' but to simplify assume typical ppp for %90+ users at 0.75
ppp = 0.75

' oop pixels from top-leftt of chart until
' the series-1 is found with GetChartElement

Set cht = ActiveSheet.ChartObjects(1).Chart ' CHANGE to suit

xx = CLng(cht.Parent.Width / ppp) ' width in pixels
yy = CLng(cht.Parent.Height / ppp)

For k = 10 To 1 Step -2
'start by looping every 10th pixel to save time
For y = 1 To yy Step k
For x = 1 To xx Step k
Call cht.GetChartElement(x, y, elem, arg1, arg2)
If elem = xlSeries Then
'found the one & only series with single point, exit the loops
'(if need a particular series & point - check arg1 & arg2)
b = True
Exit For
End If
Next
If b Then Exit For
Next
If b Then Exit For
Next

If b Then
'convert chart pixel co-ord to worksheet point co-ord
xx = cht.Parent.Left + x * ppp
yy = cht.Parent.Top + y * ppp

b = False

'loop if/until our co-ord intersects a shape
For Each shp In ActiveSheet.Shapes
If shp.Name < cht.Parent.Name Then
With shp
If xx = .Left Then
If xx <= .Left + .Width Then
If yy = .Top Then
If yy <= .Top + .Height Then
b = True ' got it
Exit For
End If
End If
End If
End If
End With
End If
Next

If b Then MsgBox shp.Name
End If

End Sub

Regards,
Peter T


"Trevor Williams" wrote in
message ...
ha ha ha, thanks for the response Peter, and no, speed isn't

important...
(ish)

Yes, shapes exist on the worksheet, and yes the chart order is 'on

top'

Regarding visibility, it will probably be the opposite - the chart

will be
visible and the shapes won't.

Once the name of the shape which the plot lies within is returned, I

will
use a lookup to show a specific screen.

I'll be happy to mail the image to you on a personal e-mail if you

think
it
will help.

Thanks again

Trevor

"Peter T" wrote:

Are you saying you have shapes on the worksheet, not on the chart,

and
chart's Order is "on top".

Presumably ChartArea's & Plot's Fill are invisible so you can see

through
to
shapes and pictures, though that's not directly relevant.

Is speed important (say no!)

Regards,
Peter T


"Trevor Williams" wrote
in
message ...
Hi All,

I have a simple XY graph, plotting 1 point only. This graph is in
front
of
an image made up of several shapes.

What I would like to do is return the name of the shape that the

plot
sits
over.

Sounds simple, but where to start?

Any help appreciated.

Trevor









  #8   Report Post  
Old April 1st 08, 04:26 PM posted to microsoft.public.excel.programming
external usenet poster
 
First recorded activity by ExcelBanter: Sep 2006
Posts: 5,600
Default XL2002: XY Chart and Image Position...

Trevor sent me his file. In effect he has a web-like grid of trapezoids and
wants to know which part of the web, ie trapezoid, his XY point is over. The
trapezoids are smaller than the rectangular shapes that contain them, it's
the parts of the rectangle that surround the trapezoids that overlap and
cause problems

Although the macro I posted can determine if the chart point is over
multiple shapes there's no way to determine which is the 'required' shape.
No way to set ZOrders in a consistent way.

Much better to dispense with the chart altogether, some trig and algorithms,
as you say, and do all with shapes. I've sent something to the OP along
those lines.

It was a great little macro (modified slightly from the original as posted).
But as it turns out it has no practical purpose, just as I thought! Or maybe
it might still have life for determining the position of any chart item
without tedious calculation from first principles.

Regards,
Peter T

"Jon Peltier" wrote in message
...
I think "'frame' of the shape" means the rectangle circumscribing the

shape,
like the square that's outlined by resizing handles when a circle is
selected.

It might be more robust to determine the coordinates of the mouse click,

and
use algebraic algorithms to determine what mapped region the click

occurred
within.

- Jon
-------
Jon Peltier, Microsoft Excel MVP
Tutorials and Custom Solutions
Peltier Technical Services, Inc. - http://PeltierTech.com
_______


"Peter T" <[email protected] wrote in message
...
Hi Trevor,

My address was in the "Reply to" field of my previous post, though not
this
message. Here it is again, without the obvious punctuation -
pmbthornton gmail com

If by "shapes whose thresholds overlap" means overlapping shapes, then
the
macro I posted would return the bottom-most of any shape that's over the
same screen position as the XY chart point. Could be adapted to return

all
shapes under the point.

Not sure what this means -
" the code seems to use the 'frame' of the shape, not the lines of the
shape."

If you mean when the shape's border is close to the XY-point the macro

may
be return incorrectly - indeed as posted that may well be the case,

could
be
a few pixels out. The reason for that is the macro assumes top-left

pixel
in
the chart to be same as the chart's object position (for use with
GetChartElement), but it isn't quite due to the chartobject's border.

After posting I tweaked a little and got it almost spot on, also made it

a
little faster by only looping pixels in the PlotArea. FWIW I think it's

a
really nice little macro that serves no useful purpose, at least that I
can
think of ! So I would be interested to see your intentions with it.

Regards,
Peter T



"Trevor Williams" wrote in
message ...
Hi Peter - hope you had a good weekend.

The code you've sent works well - thank you...

However, the image that I'm using uses shapes whose thresholds overlap,

and
the code seems to use the 'frame' of the shape, not the lines of the

shape.
(hope that's clear.)

I couldn't see your disguised e-mail in your message - perhaps it's to

well
disquised for me?! - I'd like to send it over to you if the offer's

still
there.

Regards

Trevor


"Peter T" wrote:

Actually which object is on top and visibility is not relevant.

You've
got
me curious as to what you're doing with your lookup and how that
relates

to
a series point whose position is not easy to accurately control. If

not
simple to explain I'd be pleased to look at what you're up to (my

address is
disguised in the "reply to").

This macro is simplified in a number of respects but hopefully will

work.
See comments about "ppp", for distribution to unknown users would

require
API's. Uses brute force rather than calculating the point's position,

hence
why I asked about speed. Speed could be improved by starting from top

left
of the plot, though speed is better than I expected as should be fine
to
"skip" pixels.

For testing I suggest make chartarea & Plot fill's invisible with the

chart
"on top" so you can see what shape the point is over (you did say a

single
series with single a point - right).

Sub SeriesPointOverShape()
Dim b As Boolean
Dim x As Long, y As Long, k As Long
Dim xx As Single, yy As Single
Dim elem As Long, arg1 As Long, arg2 As Long
Dim shp As Shape
Dim cht As Chart
Dim ppp As Single

' normally should get points per pixel with API's but
' but to simplify assume typical ppp for %90+ users at 0.75
ppp = 0.75

' oop pixels from top-leftt of chart until
' the series-1 is found with GetChartElement

Set cht = ActiveSheet.ChartObjects(1).Chart ' CHANGE to suit

xx = CLng(cht.Parent.Width / ppp) ' width in pixels
yy = CLng(cht.Parent.Height / ppp)

For k = 10 To 1 Step -2
'start by looping every 10th pixel to save time
For y = 1 To yy Step k
For x = 1 To xx Step k
Call cht.GetChartElement(x, y, elem, arg1, arg2)
If elem = xlSeries Then
'found the one & only series with single point, exit the loops
'(if need a particular series & point - check arg1 & arg2)
b = True
Exit For
End If
Next
If b Then Exit For
Next
If b Then Exit For
Next

If b Then
'convert chart pixel co-ord to worksheet point co-ord
xx = cht.Parent.Left + x * ppp
yy = cht.Parent.Top + y * ppp

b = False

'loop if/until our co-ord intersects a shape
For Each shp In ActiveSheet.Shapes
If shp.Name < cht.Parent.Name Then
With shp
If xx = .Left Then
If xx <= .Left + .Width Then
If yy = .Top Then
If yy <= .Top + .Height Then
b = True ' got it
Exit For
End If
End If
End If
End If
End With
End If
Next

If b Then MsgBox shp.Name
End If

End Sub

Regards,
Peter T


"Trevor Williams" wrote in
message ...
ha ha ha, thanks for the response Peter, and no, speed isn't

important...
(ish)

Yes, shapes exist on the worksheet, and yes the chart order is 'on

top'

Regarding visibility, it will probably be the opposite - the chart

will be
visible and the shapes won't.

Once the name of the shape which the plot lies within is returned,

I
will
use a lookup to show a specific screen.

I'll be happy to mail the image to you on a personal e-mail if you

think
it
will help.

Thanks again

Trevor

"Peter T" wrote:

Are you saying you have shapes on the worksheet, not on the chart,

and
chart's Order is "on top".

Presumably ChartArea's & Plot's Fill are invisible so you can see

through
to
shapes and pictures, though that's not directly relevant.

Is speed important (say no!)

Regards,
Peter T


"Trevor Williams" wrote
in
message ...
Hi All,

I have a simple XY graph, plotting 1 point only. This graph is

in
front
of
an image made up of several shapes.

What I would like to do is return the name of the shape that the

plot
sits
over.

Sounds simple, but where to start?

Any help appreciated.

Trevor











  #9   Report Post  
Old April 1st 08, 04:42 PM posted to microsoft.public.excel.programming
external usenet poster
 
First recorded activity by ExcelBanter: Jul 2006
Posts: 6,582
Default XL2002: XY Chart and Image Position...

I was going to say, scrap the shapes and do it all on the chart. Define the
polygons using the XY coordinates of the points, color them in if you like
using

http://peltiertech.com/Excel/Charts/VBAdraw.html

then use the algorithms here to determine which polygon contains the cursor
location:

http://andypope.info/ngs/ng5.htm

- Jon
-------
Jon Peltier, Microsoft Excel MVP
Tutorials and Custom Solutions
Peltier Technical Services, Inc. - http://PeltierTech.com
_______


"Peter T" <[email protected] wrote in message
...
Trevor sent me his file. In effect he has a web-like grid of trapezoids
and
wants to know which part of the web, ie trapezoid, his XY point is over.
The
trapezoids are smaller than the rectangular shapes that contain them, it's
the parts of the rectangle that surround the trapezoids that overlap and
cause problems

Although the macro I posted can determine if the chart point is over
multiple shapes there's no way to determine which is the 'required' shape.
No way to set ZOrders in a consistent way.

Much better to dispense with the chart altogether, some trig and
algorithms,
as you say, and do all with shapes. I've sent something to the OP along
those lines.

It was a great little macro (modified slightly from the original as
posted).
But as it turns out it has no practical purpose, just as I thought! Or
maybe
it might still have life for determining the position of any chart item
without tedious calculation from first principles.

Regards,
Peter T

"Jon Peltier" wrote in message
...
I think "'frame' of the shape" means the rectangle circumscribing the

shape,
like the square that's outlined by resizing handles when a circle is
selected.

It might be more robust to determine the coordinates of the mouse click,

and
use algebraic algorithms to determine what mapped region the click

occurred
within.

- Jon
-------
Jon Peltier, Microsoft Excel MVP
Tutorials and Custom Solutions
Peltier Technical Services, Inc. - http://PeltierTech.com
_______


"Peter T" <[email protected] wrote in message
...
Hi Trevor,

My address was in the "Reply to" field of my previous post, though not
this
message. Here it is again, without the obvious punctuation -
pmbthornton gmail com

If by "shapes whose thresholds overlap" means overlapping shapes, then
the
macro I posted would return the bottom-most of any shape that's over
the
same screen position as the XY chart point. Could be adapted to return

all
shapes under the point.

Not sure what this means -
" the code seems to use the 'frame' of the shape, not the lines of the
shape."

If you mean when the shape's border is close to the XY-point the macro

may
be return incorrectly - indeed as posted that may well be the case,

could
be
a few pixels out. The reason for that is the macro assumes top-left

pixel
in
the chart to be same as the chart's object position (for use with
GetChartElement), but it isn't quite due to the chartobject's border.

After posting I tweaked a little and got it almost spot on, also made
it

a
little faster by only looping pixels in the PlotArea. FWIW I think
it's

a
really nice little macro that serves no useful purpose, at least that I
can
think of ! So I would be interested to see your intentions with it.

Regards,
Peter T



"Trevor Williams" wrote in
message ...
Hi Peter - hope you had a good weekend.

The code you've sent works well - thank you...

However, the image that I'm using uses shapes whose thresholds
overlap,
and
the code seems to use the 'frame' of the shape, not the lines of the
shape.
(hope that's clear.)

I couldn't see your disguised e-mail in your message - perhaps it's to
well
disquised for me?! - I'd like to send it over to you if the offer's

still
there.

Regards

Trevor


"Peter T" wrote:

Actually which object is on top and visibility is not relevant.

You've
got
me curious as to what you're doing with your lookup and how that
relates
to
a series point whose position is not easy to accurately control. If

not
simple to explain I'd be pleased to look at what you're up to (my
address is
disguised in the "reply to").

This macro is simplified in a number of respects but hopefully will
work.
See comments about "ppp", for distribution to unknown users would
require
API's. Uses brute force rather than calculating the point's
position,
hence
why I asked about speed. Speed could be improved by starting from
top
left
of the plot, though speed is better than I expected as should be
fine
to
"skip" pixels.

For testing I suggest make chartarea & Plot fill's invisible with
the
chart
"on top" so you can see what shape the point is over (you did say a
single
series with single a point - right).

Sub SeriesPointOverShape()
Dim b As Boolean
Dim x As Long, y As Long, k As Long
Dim xx As Single, yy As Single
Dim elem As Long, arg1 As Long, arg2 As Long
Dim shp As Shape
Dim cht As Chart
Dim ppp As Single

' normally should get points per pixel with API's but
' but to simplify assume typical ppp for %90+ users at 0.75
ppp = 0.75

' oop pixels from top-leftt of chart until
' the series-1 is found with GetChartElement

Set cht = ActiveSheet.ChartObjects(1).Chart ' CHANGE to suit

xx = CLng(cht.Parent.Width / ppp) ' width in pixels
yy = CLng(cht.Parent.Height / ppp)

For k = 10 To 1 Step -2
'start by looping every 10th pixel to save time
For y = 1 To yy Step k
For x = 1 To xx Step k
Call cht.GetChartElement(x, y, elem, arg1, arg2)
If elem = xlSeries Then
'found the one & only series with single point, exit the loops
'(if need a particular series & point - check arg1 & arg2)
b = True
Exit For
End If
Next
If b Then Exit For
Next
If b Then Exit For
Next

If b Then
'convert chart pixel co-ord to worksheet point co-ord
xx = cht.Parent.Left + x * ppp
yy = cht.Parent.Top + y * ppp

b = False

'loop if/until our co-ord intersects a shape
For Each shp In ActiveSheet.Shapes
If shp.Name < cht.Parent.Name Then
With shp
If xx = .Left Then
If xx <= .Left + .Width Then
If yy = .Top Then
If yy <= .Top + .Height Then
b = True ' got it
Exit For
End If
End If
End If
End If
End With
End If
Next

If b Then MsgBox shp.Name
End If

End Sub

Regards,
Peter T


"Trevor Williams" wrote
in
message ...
ha ha ha, thanks for the response Peter, and no, speed isn't
important...
(ish)

Yes, shapes exist on the worksheet, and yes the chart order is 'on
top'

Regarding visibility, it will probably be the opposite - the chart
will be
visible and the shapes won't.

Once the name of the shape which the plot lies within is returned,

I
will
use a lookup to show a specific screen.

I'll be happy to mail the image to you on a personal e-mail if you
think
it
will help.

Thanks again

Trevor

"Peter T" wrote:

Are you saying you have shapes on the worksheet, not on the
chart,
and
chart's Order is "on top".

Presumably ChartArea's & Plot's Fill are invisible so you can see
through
to
shapes and pictures, though that's not directly relevant.

Is speed important (say no!)

Regards,
Peter T


"Trevor Williams"
wrote
in
message
...
Hi All,

I have a simple XY graph, plotting 1 point only. This graph is

in
front
of
an image made up of several shapes.

What I would like to do is return the name of the shape that
the
plot
sits
over.

Sounds simple, but where to start?

Any help appreciated.

Trevor













  #10   Report Post  
Old April 2nd 08, 04:13 PM posted to microsoft.public.excel.programming
external usenet poster
 
First recorded activity by ExcelBanter: Sep 2006
Posts: 5,600
Default XL2002: XY Chart and Image Position...

I had another look at this, based on what you suggest below and the file I
sent you off-line yesterday. The web like structure can be replicated with
series quite simply; in essence concentric octagons, 8 XY lines per series,
then XY lines intersecting equivalent 'corner' points of the hexagons. That
makes a large number of polygons, so far so good, except the polygons are
described by intersecting points in "different" series.

Would take quite a lot, I think, to work out which points in which series
describe the polygon that sits over a given XY position, with which to go on
and build a freeform over the points (or re-design an existing freeform as
required).

Regards,
Peter T


"Jon Peltier" wrote in message
...
I was going to say, scrap the shapes and do it all on the chart. Define

the
polygons using the XY coordinates of the points, color them in if you like
using

http://peltiertech.com/Excel/Charts/VBAdraw.html

then use the algorithms here to determine which polygon contains the

cursor
location:

http://andypope.info/ngs/ng5.htm

- Jon
-------
Jon Peltier, Microsoft Excel MVP
Tutorials and Custom Solutions
Peltier Technical Services, Inc. - http://PeltierTech.com
_______


"Peter T" <[email protected] wrote in message
...
Trevor sent me his file. In effect he has a web-like grid of trapezoids
and
wants to know which part of the web, ie trapezoid, his XY point is over.
The
trapezoids are smaller than the rectangular shapes that contain them,

it's
the parts of the rectangle that surround the trapezoids that overlap and
cause problems

Although the macro I posted can determine if the chart point is over
multiple shapes there's no way to determine which is the 'required'

shape.
No way to set ZOrders in a consistent way.

Much better to dispense with the chart altogether, some trig and
algorithms,
as you say, and do all with shapes. I've sent something to the OP along
those lines.

It was a great little macro (modified slightly from the original as
posted).
But as it turns out it has no practical purpose, just as I thought! Or
maybe
it might still have life for determining the position of any chart item
without tedious calculation from first principles.

Regards,
Peter T

"Jon Peltier" wrote in message
...
I think "'frame' of the shape" means the rectangle circumscribing the

shape,
like the square that's outlined by resizing handles when a circle is
selected.

It might be more robust to determine the coordinates of the mouse

click,
and
use algebraic algorithms to determine what mapped region the click

occurred
within.

- Jon
-------
Jon Peltier, Microsoft Excel MVP
Tutorials and Custom Solutions
Peltier Technical Services, Inc. - http://PeltierTech.com
_______


"Peter T" <[email protected] wrote in message
...
Hi Trevor,

My address was in the "Reply to" field of my previous post, though

not
this
message. Here it is again, without the obvious punctuation -
pmbthornton gmail com

If by "shapes whose thresholds overlap" means overlapping shapes,

then
the
macro I posted would return the bottom-most of any shape that's over
the
same screen position as the XY chart point. Could be adapted to

return
all
shapes under the point.

Not sure what this means -
" the code seems to use the 'frame' of the shape, not the lines of

the
shape."

If you mean when the shape's border is close to the XY-point the

macro
may
be return incorrectly - indeed as posted that may well be the case,

could
be
a few pixels out. The reason for that is the macro assumes top-left

pixel
in
the chart to be same as the chart's object position (for use with
GetChartElement), but it isn't quite due to the chartobject's border.

After posting I tweaked a little and got it almost spot on, also made
it

a
little faster by only looping pixels in the PlotArea. FWIW I think
it's

a
really nice little macro that serves no useful purpose, at least that

I
can
think of ! So I would be interested to see your intentions with it.

Regards,
Peter T



"Trevor Williams" wrote in
message ...
Hi Peter - hope you had a good weekend.

The code you've sent works well - thank you...

However, the image that I'm using uses shapes whose thresholds
overlap,
and
the code seems to use the 'frame' of the shape, not the lines of the
shape.
(hope that's clear.)

I couldn't see your disguised e-mail in your message - perhaps it's

to
well
disquised for me?! - I'd like to send it over to you if the offer's

still
there.

Regards

Trevor


"Peter T" wrote:

Actually which object is on top and visibility is not relevant.

You've
got
me curious as to what you're doing with your lookup and how that
relates
to
a series point whose position is not easy to accurately control.

If
not
simple to explain I'd be pleased to look at what you're up to (my
address is
disguised in the "reply to").

This macro is simplified in a number of respects but hopefully

will
work.
See comments about "ppp", for distribution to unknown users would
require
API's. Uses brute force rather than calculating the point's
position,
hence
why I asked about speed. Speed could be improved by starting from
top
left
of the plot, though speed is better than I expected as should be
fine
to
"skip" pixels.

For testing I suggest make chartarea & Plot fill's invisible with
the
chart
"on top" so you can see what shape the point is over (you did say

a
single
series with single a point - right).

Sub SeriesPointOverShape()
Dim b As Boolean
Dim x As Long, y As Long, k As Long
Dim xx As Single, yy As Single
Dim elem As Long, arg1 As Long, arg2 As Long
Dim shp As Shape
Dim cht As Chart
Dim ppp As Single

' normally should get points per pixel with API's but
' but to simplify assume typical ppp for %90+ users at 0.75
ppp = 0.75

' oop pixels from top-leftt of chart until
' the series-1 is found with GetChartElement

Set cht = ActiveSheet.ChartObjects(1).Chart ' CHANGE to suit

xx = CLng(cht.Parent.Width / ppp) ' width in pixels
yy = CLng(cht.Parent.Height / ppp)

For k = 10 To 1 Step -2
'start by looping every 10th pixel to save time
For y = 1 To yy Step k
For x = 1 To xx Step k
Call cht.GetChartElement(x, y, elem, arg1, arg2)
If elem = xlSeries Then
'found the one & only series with single point, exit the loops
'(if need a particular series & point - check arg1 & arg2)
b = True
Exit For
End If
Next
If b Then Exit For
Next
If b Then Exit For
Next

If b Then
'convert chart pixel co-ord to worksheet point co-ord
xx = cht.Parent.Left + x * ppp
yy = cht.Parent.Top + y * ppp

b = False

'loop if/until our co-ord intersects a shape
For Each shp In ActiveSheet.Shapes
If shp.Name < cht.Parent.Name Then
With shp
If xx = .Left Then
If xx <= .Left + .Width Then
If yy = .Top Then
If yy <= .Top + .Height Then
b = True ' got it
Exit For
End If
End If
End If
End If
End With
End If
Next

If b Then MsgBox shp.Name
End If

End Sub

Regards,
Peter T


"Trevor Williams" wrote
in
message ...
ha ha ha, thanks for the response Peter, and no, speed isn't
important...
(ish)

Yes, shapes exist on the worksheet, and yes the chart order is

'on
top'

Regarding visibility, it will probably be the opposite - the

chart
will be
visible and the shapes won't.

Once the name of the shape which the plot lies within is

returned,
I
will
use a lookup to show a specific screen.

I'll be happy to mail the image to you on a personal e-mail if

you
think
it
will help.

Thanks again

Trevor

"Peter T" wrote:

Are you saying you have shapes on the worksheet, not on the
chart,
and
chart's Order is "on top".

Presumably ChartArea's & Plot's Fill are invisible so you can

see
through
to
shapes and pictures, though that's not directly relevant.

Is speed important (say no!)

Regards,
Peter T


"Trevor Williams"
wrote
in
message
...
Hi All,

I have a simple XY graph, plotting 1 point only. This graph

is
in
front
of
an image made up of several shapes.

What I would like to do is return the name of the shape that
the
plot
sits
over.

Sounds simple, but where to start?

Any help appreciated.

Trevor

















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