MATLAB: Does arrow fail? (R2015a)

arrowMATLABr2014bgraphics

A simple call to arrow fails on 2015a with:

Undefined operator '*' for input arguments of type 'matlab.graphics.axis.Axes'.
Error in arrow (line 423)
ax = o * gca;

Where on line 412: o = ones(narrows,1);

Best Answer

I'm not sure what "arrow" is, but that code fragment looks like it's trying to create a vector which holds "narrows" copies of the handle of the current axes. A much more reliable way of doing that would be something like:

ax = repmat(gca,[narrows 1])

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MATLAB: How to make both yyaxis axes zoom together

This behavior is in accordance with the "yyaxis" function documentation (See under "Axes Properties" in the "More About" section of the link below)

http://uk.mathworks.com/help/releases/R2016a/matlab/ref/yyaxis.html#moreabout

However, you can achieve the desired behavior by following these steps:

1. Plot your data using "yyaxis" as normal

2. Create a callback function that, before the zoom happens, saves the old axis limits.

3. Create a callback function that, after the zoom happens, edits the axis values for the (previously unaffected) left axis.

In the attached files, file saveAxisStatus.m defines the pre-zoom callback behavior, and zoomSecondAxis.m defines the post-zoom callback behavior. The file Example.m demonstrates how to use these two functions.

MATLAB: Can I control the width of arrows using quiver command

Does this work?

quiver(x,y,Ax,Ay,'linewidth',5)

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MATLAB: How to make both yyaxis axes zoom together

MATLAB: Can I control the width of arrows using quiver command

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