Xdata

This command sets the datatype on the x axis to date/time. A similar command does the same thing for each of the other axes.

Syntax:

     set xdata {time}
     show xdata

The same syntax applies to ydata, zdata, x2data and y2data.

The time option signals that the datatype is indeed date/time. If the option is not specified, the datatype reverts to normal.

See set timefmt to tell gnuplot how to read date or time data. The date/time is converted to seconds from start of the century. There is currently only one timefmt, which implies that all the date/time columns must confirm to this format. Specification of ranges should be supplied as quoted strings according to this format to avoid interpretation of the date/time as an expression.

The function 'strftime' (type "man strftime" on unix to look it up) is used to print ticmark labels. gnuplot tries to figure out a reasonable format for this unless the set format x "string" has supplied something that does not look like a decimal format (more than one '%' or neither %f nor %g).

See also Time/date for more information.