Remove data labels in a heatmap

I am using a heatmap containing a grid of 1000x1000 points. The data values are displayed on the x and y axis, which is too much; they overlap since there are too many. I would like to remove all data and keep only the xlabel, ylable, and title with a larger font size. I am not sure how to change the font size either. I tried several things without luck.

Here is my command where "a" is the 1000x1000 matrix.

heatmap(a,'xlabel','\mu','ylabel','\nu','title',['Frequency of (\mu, \nu) for ','\epsilon = ',num2str(epsilon)]);

Thank you.

Answer 1

[Star Strider]

If you just want to remove them, try this:

hmh = heatmap(a,'xlabel','\mu','ylabel','\nu','title',sprintf('Frequency of (\\mu, \\nu) for \\epsilon = %.2f',epsilon));
Ax = gca;
Ax.XDisplayLabels = nan(size(Ax.XDisplayData));
Ax.YDisplayLabels = nan(size(Ax.YDisplayData));

They don’t appear to have any properties specific to them (such as 'FontSize') that you can change.

[Dora Velcsov]

It worked!! Thank you!

[Star Strider]

As always, my pleasure!

[Yogev Hadad]

Sorry for the late answer ( New user, for the benefit of future questioners):

You can use the following parameter:

heatmap(....,'CellLabelColor','none');

Works like a charm...

Godd luck!

Answer 2

[Shipra Jain]

Hi,

Is there a way to show only some selective labels on Yaxis?

E.g. I have about 120 labels from 1970-2090. I would like only 1970, 1980, 1990....2090 to appear and switch off the other ones. Is that possible?

Thanks in advance.

Answer 3

[Deepali Kushwaha]

To remove all xlabel, ylabel and tickslabel:

heatmap(arr,'CellLabelColor','none')

In case you want to retain all labels except xticklabel:

heatmap(arr,'XDisplayLabels',NaN*ones(length(arr),1))

[Md Nazmul Anam]

Thanks a lot! This is the only solution out of 10s at least which solved the issue without messing something else in my plot!

Answer 4

[Pingsheng Ren]

Ax.CellLabelColor='none';