SetXTickCrossing
SetXTickCrossing — Set crossing length of X tick marks
Synopsis
$plot->SetXTickCrossing($xc)
    
Description
SetXTickCrossing sets the length by which the X tick
marks cross the X axis or plot border (depending on the tick position
set with SetXTickPos) pointing inwards.
See figure below.
    
Parameters
- $xc
- 
Desired X tick crossing length in pixels.
           
Notes
The default tick crossing length is 3 pixels.
    
The following figure shows the four length measurements used to draw the
tick marks. (In this plot, the tick lengths have been increased from the
defaults.)