Speaking Stata: Matrices as look-up tables
Nicholas J. Cox
Department of Geography
Durham University
Durham City, UK
[email protected]
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Abstract. Matrices in Stata can serve as look-up tables. Because Stata will accept
references to matrix elements within many commands, most notably generate
and replace, users can access and use values from a table in either vector or full
matrix form. Examples are given for entry of small datasets, recoding of categorical
variables, and quantile-based or similar binning of counted or measured variables.
In the last case, the device grants easy exploration of the consequences of different
binning conventions and the instability of bin allocation.
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Nicholas J. Cox
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matrices, vectors, data entry, recoding, quantiles, binning, look-up tables
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