ztics
Specifiy the location and labels for the tic-marks along the z-axis in a 3-d plot.
ztics(locations, labels)
Inputs
locations A vector of real numbers specifying the points along the z-axis at which the tic marks should be drawn. The numbers are in the same units as the specified data along the z-axis.
labels An array of strings specifying the labels at the given tic-marks.