| Re: Multiple image plots in postscript [message #918] |
Thu, 18 March 1993 09:29 |
kevin
Messages: 17
Registered: August 1992
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Junior Member |
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>>> Does anybody know how to put multiple image plots on 1
>>> page in postscript using pvwave CL?
>>> [...]
>>> The only way I have discovered to get multiple image plots
>>> on the same postscript page is to use the position parameter
>>> when calling tv or tvscl, but now the problem is the images
>>> are again scaled to the entire size of the plot area.
>> Because PostScript has scalable pixels, you must specify the xsize and
>> ysize parameters, as well as the position parameter, in TV or TVSCL.
>> I don't know about PV-Wave, but the following works in IDL:
>> ; Display four images in a 2x2 grid
>> ; Assume data(x,y,4) = array containing the 4 images
>> set_plot, 'ps' ;request PostScript output
>> device, ... ;modify page size, orientation, etc. as desired
>> ximsize = 0.5*!d.x_size ;define output image size
>> yimsize = 0.5*!d.y_size ;note: 0.5 assumes 2x2 grid
>> for i=0,3 do begin ;display the 4 images, using i as position index
>> tv, data(*,*,i), i, xsize=ximsize, ysize=yimsize
>> endfor
>> Hope this helps,
>> Jeff
>> % Jeff de La Beaujardiere % jdlb@mamane.ifa.hawaii.edu %
>> % Institute for Astronomy % 808-956-9843 %
>> % University of Hawai`i % fax 956-9402 %
> This sounds like another one for the new FAQ.
> Bill Thompson
I used the technique in Jeff's code to create a more general multiple
image plotting routine. Instead of hardwiring the position and size
of the images, I used the !p.multi variable to place images in either
the X window or a postscript plot. This way you can treat images
just like 2D or 3D plots. It seems like a natural thing to do. I wonder
why PVI didn't do it.
Kevin Anderson
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| Re: Multiple image plots in postscript [message #919 is a reply to message #918] |
Wed, 17 March 1993 08:46  |
thompson
Messages: 584
Registered: August 1991
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Senior Member |
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jdlb@kukui.ifa.hawaii.edu (J-F Pitot de La Beaujardiere) writes:
> kevin@dipl.rdd.lmsc.lockheed.com (Kevin Anderson) writes:
>> Does anybody know how to put multiple image plots on 1
>> page in postscript using pvwave CL?
>> [...]
>> The only way I have discovered to get multiple image plots
>> on the same postscript page is to use the position parameter
>> when calling tv or tvscl, but now the problem is the images
>> are again scaled to the entire size of the plot area.
> Because PostScript has scalable pixels, you must specify the xsize and
> ysize parameters, as well as the position parameter, in TV or TVSCL.
> I don't know about PV-Wave, but the following works in IDL:
> ; Display four images in a 2x2 grid
> ; Assume data(x,y,4) = array containing the 4 images
> set_plot, 'ps' ;request PostScript output
> device, ... ;modify page size, orientation, etc. as desired
> ximsize = 0.5*!d.x_size ;define output image size
> yimsize = 0.5*!d.y_size ;note: 0.5 assumes 2x2 grid
> for i=0,3 do begin ;display the 4 images, using i as position index
> tv, data(*,*,i), i, xsize=ximsize, ysize=yimsize
> endfor
> Hope this helps,
> Jeff
> % Jeff de La Beaujardiere % jdlb@mamane.ifa.hawaii.edu %
> % Institute for Astronomy % 808-956-9843 %
> % University of Hawai`i % fax 956-9402 %
This sounds like another one for the new FAQ.
Bill Thompson
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| Re: Multiple image plots in postscript [message #932 is a reply to message #919] |
Thu, 11 March 1993 20:11 |
jdlb
Messages: 11
Registered: July 1992
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Junior Member |
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kevin@dipl.rdd.lmsc.lockheed.com (Kevin Anderson) writes:
> Does anybody know how to put multiple image plots on 1
> page in postscript using pvwave CL?
> [...]
> The only way I have discovered to get multiple image plots
> on the same postscript page is to use the position parameter
> when calling tv or tvscl, but now the problem is the images
> are again scaled to the entire size of the plot area.
Because PostScript has scalable pixels, you must specify the xsize and
ysize parameters, as well as the position parameter, in TV or TVSCL.
I don't know about PV-Wave, but the following works in IDL:
; Display four images in a 2x2 grid
; Assume data(x,y,4) = array containing the 4 images
set_plot, 'ps' ;request PostScript output
device, ... ;modify page size, orientation, etc. as desired
ximsize = 0.5*!d.x_size ;define output image size
yimsize = 0.5*!d.y_size ;note: 0.5 assumes 2x2 grid
for i=0,3 do begin ;display the 4 images, using i as position index
tv, data(*,*,i), i, xsize=ximsize, ysize=yimsize
endfor
Hope this helps,
Jeff
% Jeff de La Beaujardiere % jdlb@mamane.ifa.hawaii.edu %
% Institute for Astronomy % 808-956-9843 %
% University of Hawai`i % fax 956-9402 %
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