subscript in ylabels of heatmap

Question

Rt Ro 2020-2-12

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/505052-subscript-in-ylabels-of-heatmap

编辑： Subhadeep Koley 2020-2-12

采纳的回答： Subhadeep Koley

heatmap.test (1).xlsx

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Hi

I want to write a word with subscription in ylabel of the heatmap.

but is shows: A_b

how can I edit this?

how can I show the xlable values as yearly (1971,1972,...)?

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' 'B_b' 'C_b' 'D_b'};
cdata = tbl{:,2:5};
h = heatmap(xlabels,ylabels,cdata');
idx = [true;diff(year(t))] ~=0;          % index of datetime values to show as x tick
h.XDisplayLabels(~idx) = {''};

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Answer 1

Subhadeep Koley 2020-2-12

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https://ww2.mathworks.cn/matlabcentral/answers/505052-subscript-in-ylabels-of-heatmap#answer_415212

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Starting in R2019a, heatmaps interpret text using TeX markup instead of displaying the literal characters. Therefore it seems you are using a release earlier than R2019a. Therefore, upgrading to the latest release might help!

For displaying "xlable values as yearly (1971,1972,...)" use the code below

close all; clc;
tbl = readtable('heatmapTest.xlsx');
t1 = datetime(1971,1,1);t2 = datetime(1986,12,1);
t = t1:calmonths(1):t2;t= t(:);
xlabels = string(datestr(t,10));
xlabels = char(xlabels);
xlabels = cellstr(xlabels);
ylabels = {'A_b' 'B_b' 'C_b' 'D_b'};
cdata = tbl{:,2:5};
h = heatmap(cdata');
h.XDisplayLabels = xlabels;
h.YDisplayLabels = ylabels;
idx = [true;diff(year(t))] ~=0;
h.XDisplayLabels(~idx) = {''};

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Rt Ro 2020-2-12

Thank you so much.

the code works well.

do you think the subscription in R2018b does not work for the heatmap?

Subhadeep Koley 2020-2-12

编辑：Subhadeep Koley 2020-2-12

You need to upgrade to at least R2019a to avail the tex markup feature in the function heatmap. tex markup for heatmap was not supported until R2019a.

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