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st: spmat idistance error
From
Ajita Atreya <[email protected]>
To
<[email protected]>
Subject
st: spmat idistance error
Date
Fri, 27 Jan 2012 19:27:42 +0000
Hi,
I have 24,000 observations on property prices.
I am trying to create an inverse distance matrix with truncation (200m) to use in
spreg command.
I used the following code to create inverse distance matrix:
spmat idistance longitude latitude, id(id) dfunction(dhaversine) vtruncate(1/.2) normalize(minmax) banded
The matrix was created once but when I re did it I started getting the error as: Object not created-bands must be<=5516
The model I am using is :
spreg g2sls lnprice ........, id(id) dlmat(matrixname) elmat(matrixname)
I also get error messages as: Mata is out of memory
Please suggest me how can I handle this matrix thing...Is it the memory of stata that is creating the problem???
PS. I am using stata12 and it works fine when I create contiguity matrix instead of inverse distance
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