Val�rie Orozco asked:
> I have a matrix toto like
>
> toto[3,2]
> b1 b2
> a1 0 0
> a2 0 0
> a3 0 0
>
> Does anyone know how I can use the names of columns and rows of the
> matrix to replace some elements.
> Instead of doing mat toto[2,1] = -1, I would to write "mat toto["a2",
> "b1"] = -1" (but this last one is wrong since I have the error "type
> mismatch") ???
Val�rie
You can do this with the -rownumb- and -colnumb- functions:
mat toto[rownumb(toto,"a2"),colnumb(toto, "b1")] = -1
HTH,
Maarten
-----------------------------------------
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
http://home.fsw.vu.nl/m.buis/
-----------------------------------------
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