How can I modify the datetime ticks used in heatmaps

5 views (last 30 days)
I am using datetime ticks to represent the x-axis as given in the following MWE code.
%% random heatmap
h1 = heatmap(rand(60))
%% generating the array for the x axis
tstart = datetime(2020,08,21,15,01,0);
tend = datetime(2020,08,21,16,00,0);
x_time = tstart: minutes(1): tend
x_time.Format = 'HH:mm'
%% changing the x ticks to be the time
h1.XDisplayLabels = x_time ;
Instead of displaying all the xtick labels, how can I only show the xtick labels every 10 mins, something similar to this {15:10, 15:20, ...}.
I tried this, but using mode function is impossible with datetime date I guess.
In addition to that, I want to change the ticks in the colorbar of the heatmap to be something like 'foo 0.1' instead of 0.1.
Could you please help me to sort this out ?
Thank you.

Accepted Answer

Jyotsna Talluri
Jyotsna Talluri on 25 Aug 2020
The below code helps
CustomXLabels = string(x_time);
% Replace all but the tenth elements by spaces
CustomXLabels(mod(minute(x_time),10) ~= 0) = " ";
% Set the 'XDisplayLabels' property of the heatmap object 'h1' to the custom x-axis tick labels
h1.XDisplayLabels = CustomXLabels;
axs = struct(gca);
cb = axs.Colorbar;
cb.TickLabels = {'foo 0.1','foo 0.2','...'};

More Answers (0)

Categories

Find more on Data Distribution Plots in Help Center and File Exchange

Products


Release

R2019a

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!