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       plslabelfunc - Assign a function to use for generating custom axis labels


       plslabelfunc(label_func, label_data)


       This function allows a user to provide their own function to provide axis label text.  The
       user function is given the numeric value for a point on an axis and returns a string label
       to  correspond  with that value.  Custom axis labels can be enabled by passing appropriate
       arguments to plenv(3plplot), plbox(3plplot), plbox3(3plplot) and similar functions.

       This function is used in example 19.


       label_func (void (*) (PLINT, PLFLT, char *, PLINT, void *), input)
              This is the custom label function.  In order to reset to the default labeling,  set
              this  to  NULL.  The  labeling  function  parameters  are,  in order: .TP axis This
              indicates which axis a label is being requested for.  The  value  will  be  one  of
              PL_X_AXIS, PL_Y_AXIS or PL_Z_AXIS.

       value  This is the value along the axis which is being labeled.

              The string representation of the label value.

       length The maximum length in characters allowed for label_text.

       label_data (void *, input)
              This parameter may be used to pass data to the label_func function.


       Geoffrey  Furnish  and  Maurice  LeBrun  wrote  and  maintain  PLplot.   This man page was
       automatically generated from the DocBook source of the PLplot documentation, maintained by
       Alan W. Irwin and Rafael Laboissiere.


       PLplot documentation at

                                          February, 2012                    PLSLABELFUNC(3plplot)