Using dynamicDateTicks external function in appDesigner --> built-in 'zoom' function Error

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Umair Mughal
Umair Mughal 2020-6-2
回答： Rahul 2025-6-9
I have an app that plots animatedline, and thus I can't plot datetime ticks directly to x-axis. So, I used dynamicDateTicks function, for x-ticks. Additionally, from this function the date and time dynamically change with zooming and panning, like when user zoom the graph the ticks changes from years to months.
In editor everything is working perfect, but in appDesigner it's showing the ticks but UI-Axis is not updating date-time after zooming and panning. It gives the error in line 74, where zoom and pan functions are located.
Here's the code of dynamicDateTicks having issues:
% Set the zoom, pan and datacursor callbacks
figH = get(axH, 'Parent');
if iscell(figH)
figH = unique([figH{:}]);
end
if length(figH) > 1
error('Axes should be part of the same plot (have the same figure parent)');
end
z = zoom(figH); % Line 74
p = pan(figH);
d = datacursormode(figH);
set(z,'ActionPostCallback',@updateDateLabel);
set(p,'ActionPostCallback',@updateDateLabel);
set(d,'UpdateFcn',@dateTip);
I know that zoom and pan function in UIAxes can't operate in this way. So, is there any trick to use them properly.

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回答（1 个）

Rahul
Rahul 2025-6-9
Hi @Umair Mughal,
I was able to reproduce the issue that you were facing while trying to use 'dynamicDateTicks' external function in MATLAB App Designer.
I observed that the example given for 'dynamicDateTicks' in MATLAB File Exchange refers to the 'datenum' function and it is making use of 'dynamicDateTicks' to modify those numbers to date values which are then being plotted.
A workaround in this scenario would be to use 'datetime' function provided by MATLAB which when being used along an axis now gives the ability to pan and zoom which was your original use-case.
The following MathWorks documentation can be referred:
'datetime': https://www.mathworks.com/help/matlab/ref/datetime.html
Thanks.

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