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Using Postscript & Colours in IDL [message #58335]

Mon, 28 January 2008 01:47

chloesharrocks
Messages: 16
Registered: January 2008

Junior Member

Hi

I'm new to IDL and the concept of postscript, so this is probably a
really naive question, but I'm having difficulties with getting my
postscript plots to be in colour. An extract of my code is below:

=====
device, decomposed=0 ;specify I'm using Indexed Colors
loadcolors ;loads graphics colors

;If we also want to consider a specific period of time
;Here we will look at scatter plot for first 5years only
j = 0 ;Here we specify which measurement in time, eg. the first one

entry_device = !d.name
set_plot, 'PS'
device, /color, /landscape, font_size=12, filename='FullScatterPlot' +
STRTRIM(N, 1) + 'runs.ps'
!P.Multi=0
plot, temp_change, precip_change, xrange=[-2,8], yrange=[-3E-6, 5E-6],
xstyle=1, ystyle=1, $
title='A Scatter Plot of Precipitation Against Temperature for Years
0-5 for ' + STRTRIM(N, 1) + ' Runs', $
;subtitle='Green Diamonds=0-5years, Red Triangles=5-10years & Blue
Squares=10-15years', $
xtitle='Global Mean Surface Air Temperature Change (Kelvin)', $
ytitle='Global Mean Precipitation Change (Kg/[m^2*s])', /nodata,
background=7, color=0
oplot, temp_change[j:j+19,run_no:run_no+(N-1)], precip_change[j:j
+19,run_no:run_no+(N-1)], psym=4, color=4
oplot, temp_change[j+20:j+39,run_no:run_no+(N-1)], precip_change[j
+20:j+39,run_no:run_no+(N-1)], psym=5, color=5
oplot, temp_change[j+40:j+59,run_no:run_no+(N-1)], precip_change[j
+40:j+59,run_no:run_no+(N-1)], psym=6, color=6
device, /close_file
set_plot, entry_device
=====

Most of the time this works fine, but occaisionally when I run the
program it comes up with an error on the "device, decomposed=0" line.
However, if I shut down IDL and restart it it will work fine again.
Also, although "color=4" looks lime green on my computer, when I print
it, the colour is more of a bluey-turquoise colour and similarly the
"color=5" which is red looks magenta when printed (is this likely to
be to do with the printer?). If someone, could explain to me how to
incorporate colour into postscript files in a way that doesn't cause
this error every time I'd be most grateful. This is my first time
using IDL and my first ever encounter with postscript files (I'm an
undergraduate at Uni).

Thanks
Chloé

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[Message index]

		Using Postscript & Colours in IDL By: chloesharrocks on Mon, 28 January 2008 01:47
		Re: Using Postscript & Colours in IDL By: Paul Van Delst[1] on Mon, 28 January 2008 14:44
		Re: Using Postscript & Colours in IDL By: David Fanning on Mon, 28 January 2008 14:27
		Re: Using Postscript & Colours in IDL By: Paul Van Delst[1] on Mon, 28 January 2008 13:56
		Re: Using Postscript & Colours in IDL By: David Fanning on Mon, 28 January 2008 12:24
		Re: Using Postscript & Colours in IDL By: liamgumley on Mon, 28 January 2008 12:18
		Re: Using Postscript & Colours in IDL By: David Fanning on Mon, 28 January 2008 08:56
		Re: Using Postscript & Colours in IDL By: chloesharrocks on Mon, 28 January 2008 08:50
		Re: Using Postscript & Colours in IDL By: chloesharrocks on Mon, 28 January 2008 07:52
		Re: Using Postscript & Colours in IDL By: David Fanning on Mon, 28 January 2008 07:38
		Re: Using Postscript & Colours in IDL By: chloesharrocks on Mon, 28 January 2008 07:25

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