PGPLOT Module: PGLAB -- write labels for x-axis, y-axis, and top of plot


SUBROUTINE PGLAB (XLBL, YLBL, TOPLBL)
CHARACTER*(*) XLBL, YLBL, TOPLBL

Write labels outside the viewport. This routine is a simple
interface to PGMTXT, which should be used if PGLAB is inadequate.


Arguments
XLBL (input) : a label for the x-axis (centered below the
viewport).
YLBL (input) : a label for the y-axis (centered to the left
of the viewport, drawn vertically).
TOPLBL (input) : a label for the entire plot (centered above the
viewport).