how to plotyy axis equal

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Hideki Kawakatsu 2018-2-3

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回答： vijaya lakshmi 2018-2-8

hello, is there an equivalent code for AXIS EQUAL for plotyy ? My concern is that when I use grid on, the dashed lines are not superposed on left side axis and right side axis. So it seems I need to rebuild the tick labels to have the same spacing unit on left and right side axis ticks. Any suggestions ? yours

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Answer 1

vijaya lakshmi 2018-2-8

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Hi Hideki,

I understand that you want to superimpose the dashed lines on both the Y-axes when using grid on.

The grid lines superimposes if the number of levels/divisions on both the Y-axes are same.

Try the following code snippet where the grid lines are superimposed

 x = linspace(0,10);
 y = sin(3*x);
 z = sin(3*x).*exp(0.5*x);
 [haxes,hline1,hline2] = plotyy(x,y,x,z);
 set(haxes(2),'Xgrid','on')
 set(haxes(2),'Ygrid','on')
 set(haxes(1),'ylim',[-1 1])
 set(haxes(2),'ylim',[-130 130])
 set(haxes(2),'ytick',[-130:10:130])
% you can then for instance add a grid to the first axes as well
 set(haxes(1),'ytick',linspace(-1,1,27))
 set(haxes(1),'Xgrid','on')
 set(haxes(1),'Ygrid','on')