
plgzax: Get z axis parameters 

DESCRIPTION:

    This function is used in example 31. 

SYNOPSIS:

plgzax(p_digmax, p_digits)

ARGUMENTS:

    p_digmax (PLINT *, output) :    Pointer to variable with the maximum
    number of digits for the z axis.  If nonzero, the printed label
    has been switched to a floating point representation when the
    number of digits exceeds p_digmax. 

    p_digits (PLINT *, output) :    Pointer to variable with the actual
    number of digits for the numeric labels (z axis) from the last
    plot. 
