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Re: Creating colour-coded plots of spectra [message #67534 is a reply to message #67532]

Mon, 03 August 2009 05:24

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Jimmy writes:

> However (and this is my fault for not being clear) I'm not really at
> that stage yet- I'm still trying to convert a line spectral plot into
> a colour coded image, prior to plotting it. I basically have an array
> with a range of values in representing an 8 second piece of data, then
> a load of zeros, then another load of data, then zeros, etc... for an
> hour or so. When plotting this prints out as many, many spectra all in
> a line, and I'm trying to get idl to display them vertically and in
> color (as in the Ulysses plots).
>
> It may be that I need to write something to do this (I'm thinking
> something that bins the data accoring to its value, then assigns it a
> color based on intensity...) but as I've seen these plots around and
> the seem fairly standard I was hoping someone might know of function
> or program to do it for me- with my IDL skills it's likely to take a
> fair bit of time/cursing!

It sounds to me like you need to use REFORM to
turn your 1D array into a 2D array, and then use
BYTSCL to convert your data into something you
can display with TV. I think the "program" you
are looking for is at most 3 or 4 lines long. :-)

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.dfanning.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")

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[Message index]

		Re: Creating colour-coded plots of spectra By: pgrigis on Mon, 03 August 2009 07:30
		Re: Creating colour-coded plots of spectra By: David Fanning on Mon, 03 August 2009 05:24
		Re: Creating colour-coded plots of spectra By: jimmybobs on Mon, 03 August 2009 00:35
		Re: Creating colour-coded plots of spectra By: pgrigis on Fri, 31 July 2009 07:38

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