imshow problems

[kiltanen]

I'm trying to get octave draw fractal with following command:
imshow(A,'Colormap',[1,0,0;0,1,0;0,0,1]) ;A is 1000x1000 matrix of complex numbers and whole command something that course assinstants told to use in matlab. Output is supposed to be color image but octave gives black image with grey background. How i get octave to draw fractal as color image? Assingment has to be returned by 29.9.2008 12 o'clock finnish time.

[dbateman]

kiltanen wrote:

I'm trying to get octave draw fractal with following command:
imshow(A,'Colormap',[1,0,0;0,1,0;0,0,1]) ;A is 1000x1000 matrix of complex numbers and whole command something that course assinstants told to use in matlab. Output is supposed to be color image but octave gives black image with grey background. How i get octave to draw fractal as color image? Assingment has to be returned by 29.9.2008 12 o'clock finnish time.

What version of Octave and gnuplot are you using? imshow changes in 3.0.1 and so maybe a newer version of Octave will fix the issue. In any case maybe if you can save the matrix or the code to calculate it and perhaps someone might look more closely at the issue.. Ask very nicely and they might even give you a png with the plot :-)

D.

[kiltanen]

Octave version is 3.0.2 from OpenSUSE 11.0 science repository. Complete m-file attached
 C.m

dbateman wrote:

kiltanen wrote:

I'm trying to get octave draw fractal with following command:
imshow(A,'Colormap',[1,0,0;0,1,0;0,0,1]) ;A is 1000x1000 matrix of complex numbers and whole command something that course assinstants told to use in matlab. Output is supposed to be color image but octave gives black image with grey background. How i get octave to draw fractal as color image? Assingment has to be returned by 29.9.2008 12 o'clock finnish time.

What version of Octave and gnuplot are you using? imshow changes in 3.0.1 and so maybe a newer version of Octave will fix the issue. In any case maybe if you can save the matrix or the code to calculate it and perhaps someone might look more closely at the issue.. Ask very nicely and they might even give you a png with the plot :-)

D.