[Scilab-users] using "mesh"

[grivet]

Hi,

I have a data matrix  M (64x128) which I plot in 3-D using mesh(x,y,M). 
this produces a nice plot.
However, when I export this plot as an .eps file, I notice two problems:
         -the process is very long (several minutes)
         -the resulting file is large (3.1 Mo)
If I choose export to .pdf,  the transfer to disk is somewhat faster and 
the resulting file half as large.
Is this behaviour normal or is there a way to obtain a smaller file (in 
eps or pdf format) in a shorter time ?

Is it possible, using mesh, to plot a subset of the data, as is done 
with plot3d using ebox ?

There is an annoying discrepancy between mesh and contour2d: if 
mesh(x,y,M) works,
then I must write contour2d(y,x,M) to obtain a contour plot, ie lines 
and columns are switched.

I use win XP, SP3 and Scilab 5.4.1

Thank you in advance for your help
JP Grivet