Question

I have 3D data plotted using the ‘plot3’ function. I would like to constrain the Y and Z axes such that they are equal in scale. The X axis should be automatically scaled as usual.

I know from here that I can make the X axis be the only one to be automatically scaled by using the command:

axis 'auto x';

However, this causes the Y and Z axes to be plotted from 0 to 1 only; my data often exceeds this in all axes. What I’m looking for is a plot which contains all the data in a single view, but with the smallest of the Y or Z axes scaled down so that the Y and Z axes are equivalent in scale.

Answer 1

Try daspect.

plot3(5*rand(10,1),10*rand(10,1),rand(10,1))

tmpAspect=daspect();
daspect(tmpAspect([1 2 2]))

daspect() returns the current aspect ratio as produced by axis ‘auto’.

daspect(tmpAspect([1 2 2])) then enforces that y and z have the same scale.