Statalist The Stata Listserver

[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]

st: RE: mat size

From   "Maarten Buis" <>
To   <>
Subject   st: RE: mat size
Date   Wed, 1 Nov 2006 13:45:39 +0100

Apparently you are trying to estimate a fixed effects regression by adding 
dummies. A better way of doing the fixed effects regression is -xtreg- with 
the fe option. see: -help xtreg- and the entry for -xtreg- in the xt manual.


Maarten L. Buis
Department of Social Research Methodology 
Vrije Universiteit Amsterdam 
Boelelaan 1081 
1081 HV Amsterdam 
The Netherlands

visiting adress:
Buitenveldertselaan 3 (Metropolitan), room Z434 

+31 20 5986715

-----Original Message-----
From: []On Behalf Of irodriguez
Sent: woensdag 1 november 2006 13:33
Subject: st: mat size

Dear list-members,

I am trying to run a OLS regression with panel data (8240 observations) 
The explaining variable have 1203 categories

I estimate the following model:
    set mem 50m
    set matsize 800
    xi: reg perform i.codempr
but the outcome is:

i.codempr         _Icodempr_1-1203    (naturally coded; _Icodempr_1 omitted)
matsize too small
    You have attempted to create a matrix with more than 800 rows or columns
or to fit a model with more than 800
    variables plus ancillary parameters.  You need to increase matsize using
the set matsize command; see help matsize.

*   For searches and help try:

© Copyright 1996–2024 StataCorp LLC   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index