MATLAB: Heatmap giving a “Cannot find an exact (case-sensitive) match for ‘heatmap’ ” error

case sensitivedirectoryerrorfunctionheatmapMATLAB

i'm using MATLAB 2016. Whenever I try to run the heatmap function, I keep getting the following error:

Cannot find an exact (case-sensitive) match for 'heatmap'
The closest match is: HeatMap in C:\Program Files\MATLAB\R2016a\toolbox\bioinfo\microarray\@HeatMap\HeatMap.m

What exactly should I type to get rid of this problem? I understand that it as something to do with the path but can't figure it out exactly.

Best Answer

As described in heatmap document, heatmap was introduced in R2017a. So as of R2016a which you're using, this function does not exist. You need to update to R2017a or above to use heatmap.

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MATLAB: How to make colorbars of subplots with different colormaps match for each subplot

I found the answer. There is no need for freezeColors or cbfreeze in Matlab 2017a. The trick is to use gca as the target in colormap. Here is the code that works correctly:

load clown.mat
image(X)
load penny.mat
image(P)
figure(1)
hFig=gcf;
set(hFig, 'Position', [50 50 300 500]);
subplot(2,1,1)
image(X);
colormap(gca,'gray')
hcb1=colorbar;
subplot(2,1,2)
image(P);
colormap(gca,'jet')
hcb2=colorbar;

The resulting plot looks like this with correct colorbars matching the different colormaps of each subplot:

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));

Best Answer

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MATLAB: How to make colorbars of subplots with different colormaps match for each subplot

MATLAB: Colorbar not matching colormap

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