SET BLANKING
Keywords: greg

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SET BLANKING

            [GREG1\]SET BLANKING Bval Eval

        Define a blanking value Bval with tolerance Eval. Default is no blanking
        (i.e. Eval negative). The blanking is used by most curve  plotting  com-
        mands  such as CURVE, CONNECT, POINTS to ignore data points which verify
        ABS(Y-Bval) less or equal to Eval. The blanking value is also  used  for
        contours (RGMAP), to avoid plotting contours in pixels whose value veri-
        fy the same relation as above. And  finally,  some  commands  require  a
        blanking  value  to attribute when they are unable to define a real val-
        ue ; this include RANDOM and MASK.