| Re: oplot [message #69744 is a reply to message #69629] |
Mon, 08 February 2010 21:37   |
Gray
Messages: 253
Registered: February 2010
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Senior Member |
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On Jan 28, 6:22 pm, Paul van Delst <paul.vande...@noaa.gov> wrote:
> bing999 wrote:
>> It does not work... It still oplots everything on the last plot...
>> I must keep only the "x1save = !x y1save = !y " after the "plot" and
>> the "!x = x1save !y = y1save" before the "oplot", thats it?
>
>> Are the " ; Master save
>> xsave = !x
>> ysave = !y"
>> and " ; Master restore
>> !x = xsave
>> !y = ysave "
>
>> lines respectively at the beginning and the end of the script are
>> useful? Should I add them?
>
> No. You can't do what you originally asked for when the output is PS. In the context of
> IDL, there is no way to overplot on a previous page in a PS file. With direct graphics
> it's obviously easy (via WSET), but there is no PS equivalent (that I'm aware of).
>
> It might be possible to do what you want in PostScript itself (via some arcane PS command).
>
> The easiest solution would be to restructure your code to output each plot to a different
> PS file.
>
> cheers,
>
> paulv
>
>> Thank you for your help!
>
>>> Hi, thanks for your answers. I should have mentionned that i want to
>>> save the plots as .ps then i use :
>
>>> set_plot, 'ps'
>>> device, filename='myplots.ps',/color,bits_per_pixel=8
>>> ..............................
>>> device, /close
>
>>> and what you proposed seems not to work with such environment.
>>> Is it possible to arrange that?
>>> Thanks!
>
>>>> mgalloy wrote:
>>>> > I think you want something like:
>>>> > if (i eq 0) then begin
>>>> > window, /free
>>>> > win1 = !d.window
>>>> > plot, x1, y1
>>>> > window, /free
>>>> > win2 = !d.window
>>>> > plot, w1, z1
>>>> > ...
>>>> > endif else begin
>>>> > wset, win1
>>>> > oplot, x2, y2
>>>> > wset, win2
>>>> > plot, w2, z2
>>>> > ...
>>>> > endelse
>>>> And you might want to save the !X and !Y sysvars after each PLOT and then restore then
>>>> before each OPLOT for each of the two plots, e.g.
>>>> ; Master save
>>>> xsave = !x
>>>> ysave = !y
>>>> if (i eq 0) then begin
>>>> window, /free
>>>> win1 = !d.window
>>>> plot, x1, y1
>>>> x1save = !x
>>>> y1save = !y
>>>> window, /free
>>>> win2 = !d.window
>>>> plot, w1, z1
>>>> x2save = !x
>>>> y2save = !y
>>>> ...
>>>> endif else begin
>>>> wset, win1
>>>> !x = x1save
>>>> !y = y1save
>>>> oplot, x2, y2
>>>> wset, win2
>>>> !x = x2save
>>>> !y = y2save
>>>> oplot, w2, z2
>>>> ...
>>>> endelse
>>>> ; Master restore
>>>> !x = xsave
>>>> !y = ysave
>>>> Probably overkill, but still...
>>>> cheers,
>>>> paulv
>
Can you use multiple windows in the z-buffer? If so, you could make
all your plots using the win and wset, then read the images and dump
them to a postscript. You would probably have resolution issues,
though, even if it worked.
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