Plot time on x-axis with certain intervals

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Hi Matlab friends,
I want to plot a data set in which I have data of one minute intervals. However, the data set is big and I would only like to plot the the year/month/day quarterly. As it is, the time steps are in 250000 x 1 cell. I can convert them to categorical arrays but do not know how to proceed with the plotting.
Kind regards

Accepted Answer

Star Strider
Star Strider on 18 Nov 2021
Try something like this —
tdr = duration(minutes(1:250000));
tdt = datetime([2021 01 01])+tdr;
% Q1 = t(1435:1445)
y = sin(2*pi*minutes(tdr)*10/minutes(tdr(end)));
figure
plot(tdt, y)
grid
xticks(tdt(1:90*1440:end))
xtickformat('QQQ')
Make necessary changes to get the desired result.
.
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