Add description for the "columns" arguments
@@ -782,6 +782,12 @@ class BasePlotting:
polygon in the input data. To apply it to the fill color, use
``color='+z'``. To apply it to the pen color, append **+z** to
**pen**.
+ columns : str or 1d array
+ Choose which columns are x, y, color, and size, respectively if
+ input is provided via *data*. E.g. ``columns = [0, 1]`` or
+ ``columns = '0,1'`` if the *x* values are stored in the first
+ column and *y* values in the second one. Note: zero-based
+ indexing is used.
label : str
Add a legend entry for the symbol or line being plotted.
