getColTypes#

Purpose#

Returns the metadata type of dataframe X by columns.

Format#

col_types = getColTypes(X[, columns])#

Parameters:

X (NxK dataframe) – data with metadata.
columns (Jx1 vector or string array) – Optional argument, names or indices of the columns in X to get type of. Default = all columns.

Returns:

col_types (Jx1 dataframe) – Type of X for the J columns specified by columns.

Examples#

/*
** Import NBA data
*/
fname = getGAUSSHome("examples/nba_ht_wt.xls");
nba_ht_wt = loadd(fname, "str(Player) + cat(Pos) + Height + Weight + Age");

// Check column type of 'Age', 'Position', and 'Height'
col_types = getColTypes(nba_ht_wt, "Age"$|"Pos"$|"Height");

After the above code, col_types will be a 3x1 dataframe with the following contents:

  number
category
  number