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st: submatrix

From   behailu ayele <>
Subject   st: submatrix
Date   Tue, 15 Nov 2011 09:36:27 +0000

dear statalisters,

I have problem extracting parts of a matrix I estimated.

my matrix e(b) is  9 by 9. Now I want to extract the first line and I did this.

matrix b=e(b)
and then
 matrix new==b[1,1..9]

my problem is  when i want to have a 3 by 9 matrix of the last three columns

is this not what I am supposed to do?

matrix new==b[7/9,1..9]

your help is ppraciated
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