Re: [Gnuplot-info] keep ratio for all axis, axis in same place

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Carles Pina i Estany wrote:

> a) I am using splot command to paint some figures. I would like that
> gnuplot autoscale (ok, done by default) but I would like that gnuplot
> keeps the ratio for all axis. Example: if gnuplot decides that x-axis
> has to be from -6 to -6, I want that y-axis is from -6 to 6 and z-axis
> too. Else my figures gets with "rare" shapes

You'll have to use pre-fixed ranges then.  gnuplot doesn't do 
interdependency between axes.  The new (in upcoming 4.2) feature of 
exporting the range end values to variables may help here, if you're OK 
with doing a "dummy" plot first, to find the numbers and copy them to 
the other axes.

> b) I want that x-axis, z-axis and y-axis are always represented in z=0,
> x=0 and y=0. Any way to do it? z-axis sometimes is represented in -6, is
> a bit confusing :-)

See 'help ticslevel'.  That's all gnuplot can do for you about this. 
Note that zero-axes are already a problem in 2D plots, which gets 
considerably worse in 3D.  They end up in a region where data should be, 
tending to make the scale, the data, or even both of them unreadable.