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Re: Shading plotting symbols [message #78933 is a reply to message #78932]

Sun, 08 January 2012 08:05

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Jack Frost writes:

> I was wondering if it was possible to shade plotting symbols different
> colors? For example, say I have a latitude-longitude plot of the
> Earth, with x symbols showing the locations where some measurements
> were taken. Is it possible to shade these symbols to show the value of
> the measurement, i.e measurements with values between 1-2 are blue,
> 2-3 are green, 3-4 are red etc?
>
> At the moment I am just creating a plot of measurement locations from
> the 1d lat/lon arrays as such:
>
> plot, lon, lat, psym=1, $
> xrange=[0,360], yrange=[-90,90], $
> xtitle='Longitude', ytitle='Latitude', $
> xticks=4, xtickname=['0','90','180','270','360'], $
> yticks=6, ytickname=['-90','-60','-30','EQ','30','60','90'], $
> title='Locations of retrievals'
> filename='ice_locations.png'
> write_png,filename,tvrd()

Yes, of course. Here is an example of how you can
color plot values:

http://www.idlcoyote.com/graphics_tips/coloredline.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 thui. ("Perhaps thou speakest truth.")

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[Message index]

		Re: Shading plotting symbols By: Jack Frost on Sun, 08 January 2012 11:21
		Re: Shading plotting symbols By: Russell[1] on Sun, 08 January 2012 08:24
		Re: Shading plotting symbols By: David Fanning on Sun, 08 January 2012 08:05

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