How do I regulate datetime x-axis when using subplots?

So I'm formatting plots by year into a subplot but I keep on having about 1/4 of the subplot's x-axis be completely wrong. There's only four ticks instead of the twelve I need. The four ticks are also in the completely wrong place, April is in October for example.

Here's the part of my code I'm concerned with:

subplot(4,2,j)

pcolor(datetime(timedata,'ConvertFrom','datenum'),data1,data2)

xstart = datetime(iyr(j),01,1);

xend = datetime(iyr(j),12,31,23,59,59);

xlim([xstart,xend])

xtickformat("MM")

xticklabels(["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"])

In this case, xlim seems to be the problem but I need it to regulate other subplots.

Any ideas on why this is happening and how to fix it? Thank you!

[Cris LaPierre]

Could you share an image of when things are incorrect?

[Diego]

In the picture, you can slide right and it shows the incorrect format I'm getting.

Answer 1

[Cris LaPierre]

Thank you.

Does your timedata correspond to your ticklabels? Why not use xtickformat('MMM') instead of manually specifying the xtick labels?

timedata = datetime(2021,1:12,1);
pcolor(timedata,rand(10,1),rand(10,12))
xstart = datetime(2021,01,1);
xend = datetime(2021,12,31,23,59,59);
xlim([xstart,xend])
xtickformat("MMM")

[Diego]

Oops I was unaware of this tiny specification, thank you!

Although it's aligned correctly now, is there a reason it still only shows 4 ticks for some of the plots?

[Steven Lord]

What does xticks return for the axes that only has four tick labels shown?

plot(1:10);
xticks(1:3:10)
xticklabels(string(1:10))

whereAreTheTicksLocated = xticks

whereAreTheTicksLocated = 1×4

1 4 7 10

That's correct based on my previous call to xticks.

[Cris LaPierre]

The number of ticks used are automatically chosen. You can override this by specifying the xtick locations manually using xticks.

xticks(xstart:calmonths(1):xend)