select_column

synopsis: select_column(OP a; INT i; OP b)

description:

this routine is more or less the same as for MATRIX objects, you transform the i-th column into VECTOR object, which contains the entries of the i-th column, if the i-th column is empty, you get an empty object.

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this page was automatically generated on So Aug 10 12:23:27 CEST 2008 on the machine btn6xa