[XYZ]Tickv Keyword
Used With Routines:  AXIS,  BOXPLOT,  CONTOUR,  CONTOURFS,  CONTOUR2,  OPLOT,  PLOTSHADE_SURF,  SHADE_SURF_IRR,  SURFACE,  vtkAXES
Corresponding System Variable:  ![XYZ].Tickv
The data values for each tick mark, an array of up to 30 elements.
This keyword allows you to directly specify tick data values, producing graphs with non-linear tick marks. PV-WAVE scales the axis from the first tick value to the last, unless you directly specify a range. If you specify n tick intervals, you must specify n + 1 tick values.