1.13.1.58 timecolumn

‘timecolumn(x)‘ may be used only in expressions as part of using manipulations to fits or datafile plots. See using.

It reads the data starting at that column as a time/date value and returns its value in gnuplot’s internal time representation of "seconds since the millennium".

To find the right timefmt string to use, timecolumn searches for a using specification with the same column number as its argument. If one is found, timefmt pattern of the target axis for this specifier is used. Otherwise, timecolumn chooses the x axis timefmt per default.