I want to make a diagram with a time series that goes from -1000000 to
present. Hov can I accomplish that, since for MS the time starts at 1900?
Moreover, I want to display the dates as BP (before present) How could that
be done?
FG

Hi

For such interval, your times are probably years. When yes, then you can
simply use numeric year values instead of dates.

To convert a date to year number, use the formula (with date p.e. in cell
A2)
=YEAR(A2)
and format as General

To conert a tate to yer number BP, use the formula
=YEAR(A2)-YEAR(TODAY())
and format as General
etc.

Create your diagram as XY chart with years as X-axis values

--
When sending mail, use address arvil<attarkon.ee
Arvi Laanemets


"Folke Günther" <Folke wrote in message
...
I want to make a diagram with a time series that goes from -1000000 to
present. Hov can I accomplish that, since for MS the time starts at 1900?
Moreover, I want to display the dates as BP (before present) How could
that
be done?
FG

"Arvi Laanemets" wrote:

Hi

For such interval, your times are probably years. When yes, then you can
simply use numeric year values instead of dates.

To convert a date to year number, use the formula (with date p.e. in cell
A2)
=YEAR(A2)
and format as General
It didn't work. XL returned everything below 1 AD as 'invalid', and year 1
as '1900'

Do you have another method to make XL understand that there was a time
before 1900?

FG

Hi

You may try to use 1904-year system (from menu: Tools.Options.Calculation),
but there is a lot of disadvantages - you have to convert your existing
dates, maybe some date functions don't work properly (especially with
negative dates), etc.

--
When sending mail, use address arvil<attarkon.ee
Arvi Laanemets



"Folke Günther" wrote in message
...


"Arvi Laanemets" wrote:

Hi

For such interval, your times are probably years. When yes, then you can
simply use numeric year values instead of dates.

To convert a date to year number, use the formula (with date p.e. in
cell
A2)
=YEAR(A2)
and format as General
It didn't work. XL returned everything below 1 AD as 'invalid', and year
1
as '1900'

Do you have another method to make XL understand that there was a time
before 1900?

FG