axis.POSIXct.tickpos {plotrix} | R Documentation |
Calculates the positions of the ticks on a POSIXt date/time axis.
axis.POSIXct.tickpos(side,x,format,...)
side |
The side of the plot. |
x |
A POSIXct date object. |
format |
The optional date format. |
... |
Additional arguments as in axis.POSIXct . |
This function is only used to get the positions for the vertical grid
lines used in gantt.chart
. It is basically a copy of the
axis.POSIXct
function without the call to axis
.
The positions of the axis ticks in user (i.e. date/time) units.
probably R core team - with slight modification by Jim Lemon