When the axis equal error comes

2015 7 23
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更新时间：2015 7 23
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When I use the 'axis equal', the error comes as follows:
" Error using matlab.graphics.axis.Axes/set While setting the 'PlotBoxAspectRatio' property of Axes: Input values must be positive finite numbers.
Error in axis>LocSetEqual (line 388) set(ax,'PlotBoxAspectRatio', ...
Error in axis (line 131) LocSetEqual(ax(j),pbarlimit);
Error in display_3view_initial (line 21) axis equal;colormap(char(ColorMap)); "
However, when I use the 'axis auto' or 'axis image', there is no errors. Does anyone know what happens here?

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Guanfeng Gao
Guanfeng Gao 2015-7-23
I go to the error line and fine that when execute the line: " set(ax,'Units','Pixels'); a = get(ax,'Position'); " The result is a=[1,1,0,1], here a(3)=0, which induces the error. However, the a value is obviously wrong!!!! And the get function is the matlab build-in function which I could not read the source code!!!!
Walter Roberson
Walter Roberson 2015-7-23
Are you using dual monitors?

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