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ExcelCretin
 
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Default Extrapolation of a point on a graph/chart.

I have constructed a graph which consists of plots joined by a line (basic
line graph). How do i find the value of a point on that graph (if x = 0.37
then y = ?) other than printing the graph off and manually drawing the lines
myself? Any pointers would be most welcome!
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David Biddulph
 
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Default Extrapolation of a point on a graph/chart.

"ExcelCretin" wrote in message
...
I have constructed a graph which consists of plots joined by a line (basic
line graph). How do i find the value of a point on that graph (if x = 0.37
then y = ?) other than printing the graph off and manually drawing the
lines
myself? Any pointers would be most welcome!


If you've fitted a straight line, use the LINEST function to get the
gradient and intercept of that line, and then use those coefficients to work
out the y value for your x value.
--
David Biddulph


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ExcelCretin
 
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Default Extrapolation of a point on a graph/chart.

Thanks for the prompt response David, unfortunately I constructed a 'scatter'
with lines. does this make a difference?

"David Biddulph" wrote:

"ExcelCretin" wrote in message
...
I have constructed a graph which consists of plots joined by a line (basic
line graph). How do i find the value of a point on that graph (if x = 0.37
then y = ?) other than printing the graph off and manually drawing the
lines
myself? Any pointers would be most welcome!


If you've fitted a straight line, use the LINEST function to get the
gradient and intercept of that line, and then use those coefficients to work
out the y value for your x value.
--
David Biddulph



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Tushar Mehta
 
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Default Extrapolation of a point on a graph/chart.

Use the LINEST function to get the coefficients in worksheet cells. For
more search the XL help for LINEST,

--
Regards,

Tushar Mehta
www.tushar-mehta.com
Excel, PowerPoint, and VBA add-ins, tutorials
Custom MS Office productivity solutions

In article ,
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I have constructed a graph which consists of plots joined by a line (basic
line graph). How do i find the value of a point on that graph (if x = 0.37
then y = ?) other than printing the graph off and manually drawing the lines
myself? Any pointers would be most welcome!

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