| Re: Black screen movie [message #79580] |
Mon, 12 March 2012 03:39 |
Sofie Fehlmann
Messages: 5
Registered: November 2011
|
Junior Member |
|
|
Thanks a lot for your advice, the simulation is now correctly running!
I think the problem was the use of 'Contour' instead of 'cgContour'. I
don't know why, but there seems to be a problem if I use the 'Contour'
command.
Anyway, I'm now happy with my result.
|
|
|
|
| Re: Black screen movie [message #79592 is a reply to message #79580] |
Fri, 09 March 2012 07:49  |
David Fanning
Messages: 11724
Registered: August 2001
|
Senior Member |
|
|
Sofie Fehlmann writes:
> Yes, I would like to take a snapshot of the Contour plot and put it
> into a movie. However, it is not working, there is just a black
> screen. This is the main part of my 'Readdata':
>
> c1=contour(data,x,y,rgb_table=33,/fill,c_value=userlevels,$
> Position=[0.1, 0.15, 0.9, 0.90],c_color=indgen(levels),$
> title=['Density at t ='+string(time)],,/overplot)
>
> Except of the overplot command, there is no specification how to
> handle the window.
> If I use the following command, I can see the title of my plot in a
> movie, but no contour plot:
>
> loadct, 1
> set_plot,'z',/copy
> device, set_resolution=framedims, set_pixel_depth=24, decomposed=0
>
> for i=0,nframes-1 do begin
> filename ='DATA_000' +strtrim(i,2)+'.tab'
> readdata,filename
>
> xyouts, 0.5, 0.9, 'IDL TITLE', align=0.5, charsize=2, /normal
> timestamp = video.put(stream, tvrd(true=1))
> endfor
Well, I don't know. This is how I would do an animation
of a contour plot:
cgLoadCT, 33
XInterAnimate, Set=[640, 512, 12], /Showload
FOR j=0,11 DO BEGIN
cgContour, cgDemodata(18), /Fill, Background='white', /Outline
XInterAnimate, Frame=j, Window=!D.Window
ENDFOR
XInterAnimate, 20
END
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")
|
|
|
|
| Re: Black screen movie [message #79593 is a reply to message #79592] |
Fri, 09 March 2012 06:45 |
Sofie Fehlmann
Messages: 5
Registered: November 2011
|
Junior Member |
|
|
On Mar 9, 3:25 pm, David Fanning <n...@idlcoyote.com> wrote:
> Sofie Fehlmann writes:
>> I'm a very beginner and would like to create a movie with IDL. I tried
>> therefore the following:
>
>> for i=0,n-1 do begin
>> filename ='DATA_000' +strtrim(i,2)+'.tab'
>
>> readdata,filename
>
>> iimage = tvrd(true=3)
>> xinteranimate,image=iimage,frame=i
>> endfor
>
>> Readdata is a program which creates (after some calculations) a
>> contour plot. However, when xinteranimate starts, the contour plot
>> appears correctly but not in the xinteranimate frame. Therefore, I get
>> a black screen movie. So, I think something is completely wrong...
>> The same problem happens if I use the 'addvideostream' command. The
>> contour plot seems to appear in a different window.
>> How can I "put" the contour plot which I call with Readdata into a
>> movie frame?
>
> But, you are taking a snapshot of the ReadData window and
> putting that into the animation. Is that what you say is
> not working? Are you sure you are taking the snapshot of the
> right window? Is there anything except black pixels in your
> image? How does ReadData deal with windows?
>
> Cheers,
>
> David
>
> --
> David Fanning, Ph.D.
> Fanning Software Consulting, Inc.
> Coyote's Guide to IDL Programming:http://www.idlcoyote.com/
> Sepore ma de ni thui. ("Perhaps thou speakest truth.")
Yes, I would like to take a snapshot of the Contour plot and put it
into a movie. However, it is not working, there is just a black
screen. This is the main part of my 'Readdata':
c1=contour(data,x,y,rgb_table=33,/fill,c_value=userlevels,$
Position=[0.1, 0.15, 0.9, 0.90],c_color=indgen(levels),$
title=['Density at t ='+string(time)],,/overplot)
Except of the overplot command, there is no specification how to
handle the window.
If I use the following command, I can see the title of my plot in a
movie, but no contour plot:
loadct, 1
set_plot,'z',/copy
device, set_resolution=framedims, set_pixel_depth=24, decomposed=0
for i=0,nframes-1 do begin
filename ='DATA_000' +strtrim(i,2)+'.tab'
readdata,filename
xyouts, 0.5, 0.9, 'IDL TITLE', align=0.5, charsize=2, /normal
timestamp = video.put(stream, tvrd(true=1))
endfor
|
|
|
|
| Re: Black screen movie [message #79595 is a reply to message #79593] |
Fri, 09 March 2012 06:25 |
David Fanning
Messages: 11724
Registered: August 2001
|
Senior Member |
|
|
Sofie Fehlmann writes:
> I'm a very beginner and would like to create a movie with IDL. I tried
> therefore the following:
>
> for i=0,n-1 do begin
> filename ='DATA_000' +strtrim(i,2)+'.tab'
>
> readdata,filename
>
> iimage = tvrd(true=3)
> xinteranimate,image=iimage,frame=i
> endfor
>
> Readdata is a program which creates (after some calculations) a
> contour plot. However, when xinteranimate starts, the contour plot
> appears correctly but not in the xinteranimate frame. Therefore, I get
> a black screen movie. So, I think something is completely wrong...
> The same problem happens if I use the 'addvideostream' command. The
> contour plot seems to appear in a different window.
> How can I "put" the contour plot which I call with Readdata into a
> movie frame?
But, you are taking a snapshot of the ReadData window and
putting that into the animation. Is that what you say is
not working? Are you sure you are taking the snapshot of the
right window? Is there anything except black pixels in your
image? How does ReadData deal with windows?
Cheers,
David
--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")
|
|
|
|
comp.lang.idl-pvwave archive
Members
Search
Help
Login
Home
