Heatmap labels based on another matrix

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Joris Puttenstein 2018-4-3

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评论： Ranjeet Singh 2024-6-4

Im trying to get the heatmap function to work with my data. I want to show a different matrix of data as 'text' labels (numbers) on top of my heatmap, but I can't find how to link the new matrix to the heatmap function. I already found the following tutorial, but it doesnt work. It doesnt know 'labels_small'.

Heatmap tutorial

I know I have to convert the matrix to a cell with strings:

% matrix for heatmap [2x6]
thermala;
% additional matrix for 'text' labels
c_small = [1 2 3 4 5 6;
1 2 3 4 5 6];
c_label = sprintfc('%d',c_small);
heatmap(thermala);

Thank you in advance.

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dpb 2018-4-3

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See the examples; you didn't call it with anything excepting the data array so it can't "know" anything about labels...

<Heatmap_examples>

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dpb 2018-4-6

编辑：dpb 2018-4-8

在 MATLAB Online 中打开

Can only guess; that syntax with four arguments other than named ones isn't shown in the documentation. The previous examples all seemed to be using the table which had to have the data array first while you're using an array in which it is in the third position; you can try adding it as

heatmap(x,y,data,labels)

heatmap(x,y,labels,data)

One guess, maybe they haven't done enough testing for cases other than using a table object and it just won't work with an array; it is a very convoluted set of inputs to parse; wouldn't surprise me a bit if there are still bugs what with it being so new.

Only other suggestion I'd have would be to convert your array to a table and try that route mimicking the example entirely in form but only with different data and see if that works.

Other than that, try reading the m-file and see if there are enough comments in the input parsing to figure out the order in which those inputs are expected if, indeed, the case is handled for array input.

Failing any/all of those, submit a bug report/service request for support.

dpb 2018-4-10

Probably the difference, yes. You could probably have both if you were to make a slight rename of the FEX version or explicitly call the one desired if it has features you'd like...or, I presume you just text ed over the existing which is probably almost as simple.

Ranjeet Singh 2024-6-4

@Joris Puttenstein I would like to know how you finally managed to display information on the heatmap.

Thnak you in advance

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