MATLAB: Using a colormap to match a contour to a histogram

histogram contourf colormapMATLAB

I am regenerating cscan TOF data ( contourf(xscale, yscale, cscan, 40,'linestyle','–') ) and I would am trying to display a histogram of the data such that the bar colors will be the same a shown in the histogram (say red in the contour = 400 ns would have the histogram bar at 400 also be red). Is there an easy way to assign the bars using the colormap?

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Thanks for the help. That's what I'm trying do, although this is kind of a brute force way of doing it. I was sort of hoping that there would be a way to set the color map directly to the histogram. I guess I'll need to make a function for this.

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MATLAB: Colorbar not matching colormap

colormap is a function and you just blew it away with this line of code:

colormap = jet(256);

That overwrote the colormap function (luckily not permanently) with a 256-by-3 double array.

Try it this way

colormap(jet(256));

MATLAB: How to fully utilize the full range of the colors in the color map for better visualization in the contour plot

The number of levels in a contour plot, and hence the number of colors used, can be specified when using the CONTOUR function. The following example illustrates the effect of specifying a larger number of levels in CONTOUR. To see the example, execute the following code at the MATLAB command line:

a = peaks;
f = figure;
ah1 = subplot(1,2,1); contour(a,20)
ah2 = subplot(1,2,2); contour(a,5)
cmin = -5;
cmax = 5;
set(ah1, 'CLim', [cmin cmax], 'CLimMode', 'manual')
set(ah2, 'CLim', [cmin cmax], 'CLimMode', 'manual')

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Related Solutions

MATLAB: Colorbar not matching colormap

MATLAB: How to fully utilize the full range of the colors in the color map for better visualization in the contour plot

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