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DATMAT: Stata module to multiply variables via matrix multiplication

Author

Listed:
  • Bill Sribney

    (Stata Corporation)

Programming Language

Stata

Abstract

Consider the k variables in "oldvarlist" as an N x k matrix, where N is the number of observations. The matrix called "matname" is a k x m matrix. Then the resulting matrix product of "oldvarlist"*"matname" is a N x m matrix, whose m columns become m new variables in "newvarlist". The module is made available under terms of the GPL v3 (https://www.gnu.org/licenses/gpl-3.0.txt). Windows users should not attempt to download these files with a web browser. Note that the matrix multiplication performed by -datmat- is purely positional; i.e., it does just what you expect based on the order of the variables, observations, and rows and columns of "matname". The module is made available under terms of the GPL v3 (https://www.gnu.org/licenses/gpl-3.0.txt). Windows users should not attempt to download these files with a web browser. The row and column names of the matrix "matname" are ignored. This is different from the behavior of matrix score.

Suggested Citation

  • Bill Sribney, 1998. "DATMAT: Stata module to multiply variables via matrix multiplication," Statistical Software Components S336901, Boston College Department of Economics.
    • Handle: RePEc:boc:bocode:s336901
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    File URL: http://fmwww.bc.edu/repec/bocode/d/datmat.ado
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    File URL: http://fmwww.bc.edu/repec/bocode/d/datmat.hlp
    File Function: help file
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    Keywords

    Stata;

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