Re: axis equal help!

[Ben Abbott]

On Aug 5, 2009, at 7:40 PM, pvfloripa wrote:

> Hi Everybody,
>
> I am trying to plot a 3-D plot from several points. However, when I  
> use the
> "axis equal" command, only the X and Y axis are set to the same scale,
> whereas Z doesn't change, making the plot look wrong. Is there any way
> around this?
>
> The same code works fine in Matlab.
>
> Many thanks!
>
> Paulo

Something like the following should work ...

figure (1)
clf
surf (peaks)
axis auto
xl = get (gca, "xlim");
yl = get (gca, "ylim");
zl = get (gca, "zlim");
span = max ([diff(xl), diff(yl), diff(zl)]);
xlim (mean (xl) + span*[-0.5, 0.5])
ylim (mean (yl) + span*[-0.5, 0.5])
zlim (mean (zl) + span*[-0.5, 0.5])

Ben