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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.


Gildas manager 2023-06-01