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Re: help with scatter plot-like data [message #84887 is a reply to message #84885]

Mon, 17 June 2013 07:08

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

clykou@gmail.com writes:

> I'm really out of my depth here with my minimal knowledge on IDL.
Basically I'd like to make a color-coded 2D scatter plot, but I'm not
sure how to do it.
>
> Here's the thing. I already have values for my x and y axis and I already know that the positions of the scattered points for my z-axis are just the sqrt(x^2+y^2). But I'm not sure how to plot them in 2D.
>
> I tried a dummy array
> dummy=fltarr(3,n_elements(dataz))
> dummy[0,*]=dataz
> dummy[1,*]=xaxis
> dummy[2,*]=yaxis
>
> but then I have no idea how to use the plot command to make the scatter plot.
>

You can find over 50 different kinds of plots, including 2D scatter
plots, and the IDL code to produce them, in the Coyote Plot Gallery:

http://www.idlcoyote.com/gallery/index.html

Cheers,

David

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

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[Message index]

		help with scatter plot-like data By: clykou on Mon, 17 June 2013 07:00
		Re: help with scatter plot-like data By: David Fanning on Mon, 17 June 2013 07:08
		Re: help with scatter plot-like data By: clykou on Mon, 17 June 2013 07:19

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