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st: matrix dissimilarity

From   Alp Eren Yurtseven <[email protected]>
To   [email protected]
Subject   st: matrix dissimilarity
Date   Fri, 07 Jan 2011 13:57:44 +0200

Dear all,

I want to create a matrix for each sector and year, holding the Euclidean distance between all the observations for variables att1 att2 att3 att4. p and sec denote year and sector respectively. I want to do this with a nested loop:

levelsof p,local(y)
levelsof sec,local(s)

foreach p in `y' {
    foreach sec in `s' {
    matrix dissimilarity DE`s'`y'=att1 att2 att3 att4

I am not very familiar with loop structures in Stata and not surprisingly I get an invalid syntax error. I'd be very glad if you could give me some hints to solve this problem. Thanks in advance.


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