How to hide representative duration at datetime X-axis plot?

How to remove/hide representative duration at datetime X-axis plot under auto-mode condition(XTickLabelMode)?

Answer 1

[Adam Danz]

Starting in MATLAB R2023b, you can add, remove, or update the secondary labels using

xsecondarylabel, ysecondarylabel, zsecondarylabel

Demo

plot(datetime(2014,6,9)+days(0:9), 0:9)
xsecondarylabel(Visible="off")

[Euigyeong Hong]

It is good news to me but I am still stuck on 2021b version.

Thank you for caring about this even after 3 years.

[Benjamin Kraus]

I realize @Euigyeong Hong is stuck on R2021b, but for others who come across this answer:

Starting in R2024a you have even more control over the secondary label.

• You can use the xsecondarylabel command (introduced in R2023b) to hide the label (set Visible='off') or set a manual string to hard-code your secondary label.
• Starting in R2024a, you can now set the SecondaryLabelFormat property on the x-axis if you want to change the formatting of the label without losing the automatic nature.

ax = axes;
plot(ax, datetime(2014,6,9)+days(0:9), 0:9);
ax.XAxis.SecondaryLabelFormat = 'yyyy-MM';

Answer 2

[Ameer Hamza]

You can do it by running the following statements.

ax = gca;
ax.XTickLabel = ax.XTickLabel;

or

ax = gca;
ax.XTickLabelMode = 'manual';

[Euigyeong Hong]

Thanks, Ameer.

But I missed 'under auto-mode condition' in the question. Because when I zoom in to very short time in the figure, it it useful to see data by auto-mode x-axis.

Do you have any other method to do that?

[Ameer Hamza]

There does not seem to be a documented way.

[Euigyeong Hong]

That's too bad. It seems to need an option.

Thank you, Ameer!!

[Ameer Hamza]

I think for normal visualization, when you need to zoom on the axes, the date might not be an issue. Just turn it off when printing or saving the image.

Answer 3

[Seth Furman]

If you just want the duration data for the time of day on the x-axis, you can use the timeofday method for datetime.

>> x = datetime('today'):hours(1):datetime('today')+hours(10);
>> y = 0:10;
>> plot(timeofday(x),y)
>> xtickformat('hh:mm')

[Euigyeong Hong]

Thanks, Seth.

But I am finding to see the plot by auto-format mode because when I zoom in to short time it is easy to see "hh:mm:ss.SSS" format by itself. After checking the plot, I copied the figure, but the number of figure was 20~30, so I was unhappy.