plotting diferent ranges

[Toni Mira <toni.mira@xxxxxx>]

Hi again,

I would want to draw in the same plot several data sets  which have the 
following
form (in columns):

height / A / B / T

I've plotted one of them with:
*********************************
file/form=free/var=zz japan.copy
def axis/z/name=zax/from_data zz[d=1]
def grid/z=zax grd
file/form=free/g=grd/var=height,A,B,T japan.dat

plot/nolab T
**********************************

But the independent variable (height) has not the same range and values 
for the different
.dat files. I tried to do it in different ways, but it didn't work.
I'm not sure how to include a height into a larger height  on the same axis.

Thanks in advance.

Toni