how to refrech XticksLabel when i zoom a graph in an app

Good morning

I'm using datestr for printing time on th xlabel axis but if i zoom all the label became wrong.

I've got the write command to refresh the X labels but I think there is a mean to create a callback when the zoom is activated.

I'm in a app designed figure but if it's possible in classicle figure i'm intersted to.

regards

Answer 1

[Steven Lord]

Rather than calling datestr or datetick I recommend plotting using a datetime array as your X data.

v = 0:10;
y = v.^2;
tenDays = datetime('today') + days(v)

tenDays = 1×11 datetime array
   16-Feb-2023   17-Feb-2023   18-Feb-2023   19-Feb-2023   20-Feb-2023   21-Feb-2023   22-Feb-2023   23-Feb-2023   24-Feb-2023   25-Feb-2023   26-Feb-2023

plot(tenDays, y)

As you zoom in on the axes MATLAB will automatically update the tick labels. If you want to customize the format used to display the datetime data you can use the xtickformat function to do so.

[patrice boisset]

Hello Steven

Thank you for the answer. This solution is very convinient while there is only one plot in the same axis but in my case there is different lines with diferents time vector and in that case the zoom made strong Xscale because of the Xlabels that don't folow.

Below the second graph has been zoomed between 12 and 13 o'clock and the plot has been done with datetime solution.

So I went back to my old manner and i'm steel interested for the way to code a callback after a zoom in an app and or a figure.

Thanks