POINTS

##
POINTS

            [GREG1\]POINTS [Xarray Yarray] [/BLANKING Bval [Eval]] [/SIZE Zvalue
        [Zarray [Exponent]]] [/MARKER SidesArray StyleArray]

        Makes points of the current style (MARKER), size  (MARKER  and  EXPAND),
        and orientation (ORIENTATION) at the X and Y coordinates read by COLUMN,
        or in the variables Xarray and Yarray.

        With the option /SIZE, followed by a real value Zvalue, POINTS will draw
        markers of sizes governed by the values of the Z array (or of the Zarray
        if specified). Points with Z value equal to Zvalue will have a marker of
        size  the  current marker size. All other markers will have an AREA pro-
        portional to the Z value at each point (i.e. marker radius at X(i)  Y(i)
        proportional  to the square root of Z(i); this power law exponent can be
        changed by specifying an additional argument to option /SIZE).  If Zval-
        ue  is equal to zero, the program uses the maximum absolute value of the
        Z array instead.

        The /BLANKING option can be used to override the current blanking behav-
        iour,  as defined by SET BLANKING command. If Eval (defined by /BLANKING
        or SET BLANKING) is null or positive, blanking is enabled. If  /SIZE  is
        used, blanking applies to the Z (or Zarray) values, e.g. in a context of
        a (coordinate,coordinate,intensity) map. If /SIZE is not used,  blanking
        applies  to  the  Y  (or Yarray) values, e.g. in a context of a (abscis-
        sa,intensity) profile.

        The /MARKER option can be used to specify a different  marker  sidedness
        and style for each data point.