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st: Making a matrix out of three variables
From
Eilya Torshizian <[email protected]>
To
"[email protected]" <[email protected]>
Subject
st: Making a matrix out of three variables
Date
Thu, 16 Jan 2014 20:03:22 +0000
Dear Statalist members,
I need to convert three variables to a matrix. The values of variable A and B should be used as row and column names of the output matrix. Let's assume three columns of data, where A, B and C are the name of my numeric variables,
A B C
A1 | A1 | C1
A1 | A2 | C2
A1 | A4 | C3
A1 | A5 | C4
A2 | A2 | C5
A2 | A1 | C6
A2 | A3 | C7
I need to convert these to the following matrix,
A1 A2 A3 A4 A5
A1 C1 C2 0 C3 0
A2 C6 C5 C7 0 0
As I have a wide range of observations, I would like to avoid nested loops.
Thanks,
Eilya.
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