Re: Figure handle is very slow, saving impossible

[christoph]

Here are my scripts,

Case1:

pic_1=imread("/opt/octave/pics/clipped.tiff")

........

.......

hold "on"
imagesc(pic_1)
plot([CoordsPoints{:}](2,:),[CoordsPoints{:}](1,:),"ro")
hold "off"

print -dpng /opt/octave/pics/test.png ----->>>fails!!

notice:

                      Dimention       class

<<<<pic_1   4800x3600x3  uint8>>>>

Case2:

pic_2=imread("/opt/octave/pics/clipped_grayscale.tiff")

........

.......

hold "on"
imagesc(pic_2)
plot([CoordsPoints{:}](2,:),[CoordsPoints{:}](1,:),"ro")
hold "off"

print -dpng /opt/octave/pics/test.png ----->>>works!!

                      Dimention       class

<<<<pic_2   4800x3600      uint8>>>>

 


On 2017-04-06 01:02, Kire Pudsje wrote:

On Wed, Apr 5, 2017 at 11:12 PM, christoph <address@hidden> wrote:

Hello,

I tried imagesc and indeed that's way faster then surfplot! Thanks a lot for this advice.  Concerning the print problem.--->>

I tried -dpng and also -djpeg as well as -dpdf all failed, if I have a color(RGB band) picture to print.

But in case of  grascale image(one band) it works properly!

Has this anything to do with osmesa? because test on osmesa failed when I did "make check". I read a thread about a problem with osmesa and nvidia driver. Probably that's the issue? 

Please prepare a minimal scripts that generates the problem. The following

imagesc(peaks(7000));

print -dpng test.png

print -dpdf test.pdf

works for me