st: spmat object not found

[rraciborski@stata.com]

Martijn Smit <martijn.smit@vu.nl> reported a problem with the user-written
-spmat- command.  Martijn tried to export the spatial-weighting matrix
contained in the spmat object nuts2q but -spmat export- complained:

  . spmat export nuts2q using nuts2q.txt
  spmat object nuts2q not found
  r(498);

I suspect that the correct error message should have told Martijn that the file
nuts2q.txt already exists.  If so, Martijn should add the -replace- option to
his code:

  . spmat export nuts2q using nuts2q.txt, replace

We will fix the error message in a future update to -spmat-.

If my suspicion is not correct, Marijn can email me privately with his datasets
and I will be glad to take a closer look.

--Rafal
rraciborski@stata.com
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