scikits.statsmodels.sandbox.regression.try_ols_anova.data2proddummy

scikits.statsmodels.sandbox.regression.try_ols_anova.data2proddummy(x)

creates product dummy variables from 2 columns of 2d array

drops last dummy variable, but not from each category singular with simple dummy variable but not with constant

quickly written, no safeguards

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