I am plotting a matrix with rain intensities with an image plot in matlab.
I want the colorbar to show a distinct colour for 0-10, 10-20... to 90-10.
I've tried the function surf(10) to get 10 discrete colors, but then only values up 10 is showed.
This is the code I used:
image(pr20020719T0730)
cmap = jet(10);
colormap(cmap);
colorbar
This is how the image looks after the code
Unlike imshow, the image function sets the CDataMapping property of the image object to 'direct'. Read MATLAB docs for more details. This is how this affects the outcome:
% create 256x256-matrix with discrete, ascending column values
X = repmat(linspace(0, 100, 256), 256, 1);
% first subplot
subplot 121
image(X)
colorbar
% second subplot
subplot 122
image(X, 'CDataMapping', 'scaled')
colorbar
% set colormalt to "jet"
cmap = jet(10);
colormap(cmap)
