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how to change the XTick of heatmap?
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when I run this code I have 192 months on the x-axis.
I want to show each year (Jan1971,Jan 1972,...Dec 1986) on the x axis. if I do:
set(h,'XTick',datetime('Jan-1971'):calmonths(12):datetime('Dec-1986'));
I have this error:
Error using matlab.graphics.chart.HeatmapChart/set
The name 'XTick' is not an accessible property for an instance of class 'matlab.graphics.chart.HeatmapChart'.
could you please help me to solve the problem.
tbl = readtable('heatmap.test.xlsx');
t1 = datetime(1971,1,1);t2 = datetime(1986,12,1);
t = t1:calmonths(1):t2;t= t(:);
xlabels = string(datestr(t,12));
ylabels = {'A' 'B' 'C' 'D'};
cdata = tbl{:,2:5};
h = heatmap(xlabels,ylabels,cdata');
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Accepted Answer
Adam Danz
on 3 Dec 2019
Edited: Adam Danz
on 3 Dec 2019
I'm not sure what rule you were following to chose the x-ticks in your question (Jan1971,Jan 1972,...Dec 1986) but here's how to show every January. You can adapt the rule as needed.
t is your datetime vector
h is the handle to your heatmap object.
% Show every January
idx = month(t)==1; % index of datetime values to show as x tick
h.XDisplayLabels(~idx) = {''}; % replace rejected tick labels with empties
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/252483/image.png)
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More Answers (2)
Juan Fernández Blasco
on 20 Apr 2020
Any of you did face the problem of rotating the x axis values in a heatmap?
I am trying the following:
h2 = heatmap(tsT,stress_attributes,stress_matrix(:,1:272),'TickAngle',45);
Basically, 'TickAngle',45 because I saw it in a post, but I got this error:
The name 'TickAngle' is not an accessible property for an instance of class 'matlab.graphics.chart.HeatmapChart'.
I also tried without succeeding the following:
h2 = heatmap(tsT,stress_attributes,stress_matrix(:,1:272),[],'TickAngle',45);
1 Comment
Adam Danz
on 20 Apr 2020
Edited: Adam Danz
on 21 Apr 2020
Heatmaps are notoriously difficult to customize due to inaccessible graphics handles. A workaround is to remove the tick labels completely, overlay an invisible axes the same size as the heatmap, and add the customizable tick labels to the new axes.
If you have any problems applying the demo to your needs show me your attempt and I can help straighten things out.
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