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# st: AW: Import external correlation matrix

 From Dirk Enzmann To statalist@hsphsun2.harvard.edu Subject st: AW: Import external correlation matrix Date Mon, 14 Jun 2010 12:54:08 +0200

```Thanks Martin for you quick and helpful answer!

```
In case that others will encounter the same problem, here an example on how to use an external correlation matrix for factor analysis. I use -insheet-, -mkmat-, and -matname-. Note that you have to set the numbers of observations also via -set obs-, otherwise -fapara- will yield wrong results:
```
* ------------------------------------------------

* (hopefully this line will not get broken in the email):
```
global URL1 "http://www2.jura.uni-hamburg.de/instkrim/kriminologie/Mitarbeiter/Enzmann/Lehre/StatIIKrim/Factor/";
```
* Install -fapara- if necessary:
cap which fapara
if _rc {
```
```}

* Install -sortl- if necessary:
cap which sortl
if _rc {
ssc install sortl
}

* Use correlation matrix published in Harman (1976, p. 124)
* Harman, H.H. (1976) Modern Factor Analysis. Chicago, IL (3rd ed.):
*   University of Chicago Press.

insheet using "\${URL1}holzingr.cor", clear

mkmat v1-v24, matrix(holzinger)
matname holzinger visual   cubes    paper    flags   general  ///
paragrap sentence wordc    wordm   addition ///
code     counting straight wordr   numberr  ///
figurer  object   numberf  figurew deduct   ///
numeric  problemr series   arithmet, explicit
set obs 145

factormat holzinger, n(145) factors(4)
fapara, reps(10000)  // Please wait - it will take some time!
rotate, quartimin oblique
sortl
matlist e(r_Phi), format(%7.4f) title("Factor correlation matrix")

* ------------------------------------------------

Dirk

```
```From: "Martin Weiss" <martin.weiss1@gmx.de>
Subject: st: AW: Import external correlation matrix

```
<>
```Just -insheet- the thing and subsequently -mkmat-.

HTH
Martin
```
```
--------------------------------
Dirk Enzmann
Institute of Criminal Sciences
Dept. of Criminology
Rothenbaumchaussee 33
D-20148 Hamburg, Germany
http://www2.jura.uni-hamburg.de/instkrim/kriminologie/Mitarbeiter/Enzmann/Enzmann.html

*
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```