Column

The column(x) function may be used only in the using specifier of a plot, splot, fit, or stats command. It evaluates to the numerical value of the content of column x. If the column is expected to hold a string, use instead stringcolumn(x) or timecolumn(x, "timeformat"). See plot datafile using (p. [*]), stringcolumn (p. [*]), timecolumn (p. [*]).