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Re: help with transparent plot in version 8.2.2 [message #83647 is a reply to message #83644]

Thu, 14 March 2013 11:29

Teddy Allen
Messages: 13
Registered: October 2010

Junior Member

On Thursday, March 14, 2013 9:05:43 AM UTC-4, Brian J. Daniel wrote:
> On Wednesday, March 13, 2013 11:42:42 PM UTC-4, Teddy Allen wrote:
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>> In the past I was able to easily save any line plot with a transparent background simply by saving the plot as:
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>> plot.save,'transparent_plot.png',/TRANSPARENT
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>> Unfortunately, this does not seem to work anymore if used with the plot function with the POSITION keyword. The following lines of code do not produce an expected transparent .png .
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>> ;;;; GPCP2b is a 16,16,12 array
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>> ;;;; Lines below produce a 12 month annual rainfall time series for a 16x16 grid
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>> ;;;; in the Caribbean.
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>> DIM=16.
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>> SC=1/DIM
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>> p = plot(GPCP2b[0,0,*],position=[0,0,SC,SC],$
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>> yrange=[0,max(GPCP2b)], XSHOWTEXT=0,$
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>> YSHOWTEXT=0, color='black',TRANSPARENCY=0)
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>> for i = 0,15 do begin
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>> for j =0,15 do begin
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>> p1=plot(GPCP2b[i,j,*],position=[SC*i,SC*j,SC*(i+1),SC*(j+1)] $,/current,
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>> yrange=[0,max(GPCP2b)], XSHOWTEXT=0, YSHOWTEXT=0, color='black')
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>> endfor
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>> endfor
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>> p1.save,'C:\datasets\testTRANS.png',/TRANSPARENT
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>> I have tried various combinations of using BACKGROUND_COLOR and BACKGROUND_TRANSPARENCY in the plot commands, but nothing works.
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>> This produces a transparent plot:
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>> p = plot(GPCP2b[0,0,*],yrange=[0,max(GPCP2b)], XSHOWTEXT=0, YSHOWTEXT=0, $ color='black')
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>> p.save,'C:\datasets\testTRANS.png',/TRANSPARENT
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>> However, this DOES NOT:
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>> p = plot(GPCP2b[0,0,*],position=[0,0,SC,SC],yrange=[0,max(GPCP2b )],$ XSHOWTEXT=0,YSHOWTEXT=0,color='black')
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>> p.save,'C:\datasets\testTRANS.png',/TRANSPARENT
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>> Any tips would be greatly appreciated. Thank you.
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>> teddy
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> Have you tried using the Layout keyword instead of Position?

Looks like using LAYOUT instead of POSITION worked! I wish I knew why though...Thank you!

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[Message index]

		Re: help with transparent plot in version 8.2.2 By: chris_torrence@NOSPAM on Fri, 15 March 2013 14:05
		Re: help with transparent plot in version 8.2.2 By: chris_torrence@NOSPAM on Fri, 15 March 2013 14:03
		Re: help with transparent plot in version 8.2.2 By: David Fanning on Thu, 14 March 2013 11:57
		Re: help with transparent plot in version 8.2.2 By: Teddy Allen on Thu, 14 March 2013 11:29
		Re: help with transparent plot in version 8.2.2 By: David Fanning on Thu, 14 March 2013 10:12
		Re: help with transparent plot in version 8.2.2 By: Teddy Allen on Thu, 14 March 2013 10:00
		Re: help with transparent plot in version 8.2.2 By: David Fanning on Thu, 14 March 2013 06:40
		Re: help with transparent plot in version 8.2.2 By: Brian Daniel on Thu, 14 March 2013 06:05

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