setBaseCat#

Purpose#

Assign the label basecase to be the base case for the categorical variable specified by columns .

Format#

x_meta = setBaseCat(x, basecase[, columns])#

Parameters:

x (NxK matrix) – data.
basecase (Mx1 string array) – category to be set to base case.
columns (Mx1 scalar or string) – Optional argument, indicates columns of categorical variables to set base case for. Default = all columns.

Returns:

x_meta (NxK dataframe) – contains data with categorical base cases set to the categories specified in basecase for the variables in columns .

Remarks#

Use reordercatlabels() to change the order of all category labels.

Examples#

// Load yarn data file
fname = getGAUSSHome("examples/yarn.xlsx");
yarn = loadd(fname, "cat(yarn_length) + cycles");

// Get categorical labels for 'yarn_length'
print "Original categorical labels:";
getColLabels(yarn, "yarn_length");

// Change base case to 'low'
yarn = setBaseCat(yarn, "low", "yarn_length");

print "";
print "Updated categorical labels:";
getColLabels(yarn, "yarn_length");

The above code will print out:

Original categorical labels:

        high
         low
         med

   0.0000000
   1.0000000
   2.0000000

Updated categorical labels:

         low
        high
         med

   0.0000000
   1.0000000
   2.0000000