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Re: How to create a transparent shadow on the PostScript device? [message #67708 is a reply to message #67575] Tue, 11 August 2009 06:59 Go to previous messageGo to previous message
duxiyu@gmail.com is currently offline  duxiyu@gmail.com
Messages: 88
Registered: March 2007
Member
Thanks a lot.
This is a good and simple method.

jdu

On Aug 11, 2:52 pm, Phil Elson <philipel...@googlemail.com> wrote:
> David's page is quite clear that this is designed to work with a plot
> that has already been created: "I cannot draw the polygon first and
> then redraw the plot using OPlot because I do have have access to the
> IDL source code".
>
> If you have access to the data then why not simply put a polyfill
> behind the plot?
>
> set_plot, 'x'
> device, decomposed=0
> loadct, 3
> plot, indgen(10), /nodata, color=0, background=255
> polyfill, [0,10,10,0], [4,4,6,6], /data, COLOR=125
> plot, indgen(10), /noerase, color=0, background=255
>
> OR the similarly in the PS device
>
> set_plot, 'ps'
> device, file="test.ps"
> plot, indgen(10), /nodata
> polyfill, [0,10,10,0], [4,4,6,6], /data, color=125
> plot, indgen(10), /noerase
> device, /close
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