SetNumXTicks — Set the number of X tick marks
$plot->SetNumXTicks([$nt
])
SetNumXTicks
sets the number of tick marks to
draw on the X axis.
You can use either this function or SetXTickIncrement
(but not both) to control the tick mark spacing.
$nt
Integer number of tick marks to draw. If the value is omitted or an empty string, the default behavior is restored.
SetNumXTicks
actually sets the number of intervals into
which PHPlot divides the X data range. If there are N intervals, there might
be as many as N+1 tick marks (accounting for one at each end).
Or, there might be N or N-1 tick marks, if a tick anchor is set with
SetXTickAnchor, or if PHPlot is told to omit tick marks from
either end with SetSkipLeftTick
or SetSkipRightTick.
If neither SetNumXTicks
nor
SetXTickIncrement is used, the tick mark interval
is calculated as 1/10th of the X data range.