mata
: w = (1 , -1 \ 2,-2)
:
: w
1 2
+-----------+
1 | 1 -1 |
2 | 2 -2 |
+-----------+
: abs(w)
1 2
+---------+
1 | 1 1 |
2 | 2 2 |
+---------+
: w2 = abs(w)
: w2
1 2
+---------+
1 | 1 1 |
2 | 2 2 |
+---------+
HTH,
Maarten
-----------------------------------------
Maarten L. Buis
Department of Social Research Methodology
Vrije Universiteit Amsterdam
Boelelaan 1081
1081 HV Amsterdam
The Netherlands
visiting address:
Buitenveldertselaan 3 (Metropolitan), room Z434
+31 20 5986715
http://home.fsw.vu.nl/m.buis/
-----------------------------------------
-----Original Message-----
From: [email protected] [mailto:[email protected]]On Behalf Of Tom Boonen
Sent: donderdag 9 november 2006 15:59
To: [email protected]
Subject: st: absolute values from a matrix
Hi,
is there an elegant way to create a matrix that contains the absolute
values of the entries of another matrix?
Something like:
matrix w = (1 , -1 \ 2, -2)
matrix list w
*w[2,2]
*c1 c2
*r1 1 -1
*r2 2 -2
* But then:
. matrix w = abs(w)
type mismatch
r(109);
Any ideas? Thank you very much!
Tom
*
* For searches and help try:
* http://www.stata.com/support/faqs/res/findit.html
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
*
* For searches and help try:
* http://www.stata.com/support/faqs/res/findit.html
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
