| points on a plot [message #84745] |
Fri, 07 June 2013 02:49  |
fd_luni
Messages: 66
Registered: January 2013
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Member |
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Hi all
I had compute the singular values using the SVDC command and I want to present on my graph each eigenvalue with a dot or any other symbol.
I tried something like this
IDL> xx = [1,2,3]
IDL> yy = [1,3,4]
IDL> plots, xx, yy, psym = 4
but I want to keep the line and add symbols in each singular value. Does anyone know?
With Thanks
Maria
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| Re: points on a plot [message #84746 is a reply to message #84745] |
Fri, 07 June 2013 03:14  |
Heinz Stege
Messages: 189
Registered: January 2003
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Senior Member |
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On Fri, 7 Jun 2013 02:49:26 -0700 (PDT), fd_luni@mail.com wrote:
> Hi all
>
> I had compute the singular values using the SVDC command and I want to present on my graph each eigenvalue with a dot or any other symbol.
>
> I tried something like this
> IDL> xx = [1,2,3]
> IDL> yy = [1,3,4]
> IDL> plots, xx, yy, psym = 4
>
> but I want to keep the line and add symbols in each singular value. Does anyone know?
>
> With Thanks
> Maria
Hi Maria,
yes, it's a little bit hidden. Using negative values for psym makes a
plot with symbols connected by straight lines:
plots, xx, yy, psym = -4
Cheers, Heinz
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