st: combining matrices

[Timothy.Mak@iop.kcl.ac.uk]

Hi all, 

What's the best way to combine say a matrix eg: 

var1 var2 var3
1 1 1

with another eg

var1 var2 var4
1 1 1 

to obtain a matrix: 

var1 var2 var3 var4
1 1 1 .
1 1 . 1

??? 

Thanks, 

Tim 


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