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How can I put the axis origin in the middle of the plot?

Asked by Maria Jose Legaz on 11 Apr 2018
Latest activity Answered by Peter Rochford on 28 Apr 2018
Hello. I try to do changing the origen of axis to the center of the plot. I have written in matlab:
ax = gca;
ax.XAxisLocation = 'origin';
ax.YAxisLocation = 'origin';
Matlab say: While setting the 'XAxisLocation' property of Axes: 'origin' is not a valid value. Use one of these values: 'bottom' | 'top'.
How can I put the axis origin in the middle of the plot?
I am very grateful if someone can help me Best regards, MJ

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1 Answer

Answer by Peter Rochford on 28 Apr 2018

If the error you receive is that 'origin' is not a valid or recognized value for the XAxisLocation property, you may be using a release older than release R2015b which is when that value was added as an option for the XAxisLocation property. The alternative for earlier releases is to use PlotAxisAtOrigin.
Note that the labels of the last tick marks disappear when setting the axes location to the origin using
ax.XAxisLocation = 'origin'; ax.YAxisLocation = 'origin';
For a discussion on this problem refer to here. I have yet to find a solution to this problem that will respect axes labeling of font size from a main program such as
set(ax,'FontSize',20);
You can manually insert the tick labels using the text() function but they will not change using the above command. I would prefer MathWorks change the 'origin' feature to respect the same tick labeling as appears when using 'bottom' or 'top'.

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