Hiw to save the image as best resolution image

Hi math works community,

Thanks for all support and guidance from all expert friends through out the globe.

Its a great plateform for sharing knowledge. i am really impressed.

How to save the image in the fastest way as png.

lets suppose this is the image. how to save it.

% Generate test image contains values in 0:4
[~,~,I]=histcounts(peaks,5);
I = I-1;
imagesc(I)
colormap([1 0 0; % color of 0 value
          0 1 0; % color of 1 value
          0 0 1; % color of 2 value
          0 0 0; % color of 3 value
          1 1 1])% color of 4 value
      
set(gca,'Clim',[-0.5 max(I(:))+0.5]);
colorbar

Answer 1

[KALYAN ACHARJYA]

How to save the image in the fastest way as png.

I am not sure about fastest way, one way:

[~,~,I]=histcounts(peaks,5);
I = I-1;
imagesc(I)
colormap([1 0 0; % color of 0 value
          0 1 0; % color of 1 value
          0 0 1; % color of 2 value
          0 0 0; % color of 3 value
          1 1 1])% color of 4 value
      
set(gca,'Clim',[-0.5 max(I(:))+0.5]);
colorbar
saveas(gcf,'test_image.png');

[M.S. Khan]

Thanks Mr. KALYAN ACHARJYA .

[KALYAN ACHARJYA]

It's my pleasure sir