What colormap I should choose to plot my figure like I attached to this question?

Say my code is

[Shot] = (ReadRSS('Pshot.rss'));

figure(1),

subplot(1,3,1);

imagesc(Shot); xlabel('Offset (m)'); ylabel('Time (ms)');

color=caxis; caxis(color*.005); colormap(gray);

I want to plot in the colormap shown in the attached figure rather than gray map.

Answer 1

[Bjorn Gustavsson]

You will find a couple of red-blue colormap-functions on the file exchange: redblue-colormap-generator-with-zero-as-white-or-black, diverging-redblue-colormap-from-tecplot and red-blue-colormap. Either of those should give you the colormap you want. Further fine-tuning you have to do yourself...

HTH

[Nisar Ahmed]

Hi Bjorn,

Thanks, I tried as

y = caxis;

colormap(redblueu(64,[-11,0]));

but nothing appears in the figure except light red shaded graphics. Can you help to define the code here

[Nisar Ahmed]

Hi Bjor,

Thanks now it working.