STATISTIC

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STATISTIC

            [DISPLAY\]STATISTIC [DataCube [FirstPlane [LastPlane]]
          [/EDGE Margin] [/NOISE VarNoise]

        Compute some basic statistics (min, max, mean, rms,...) on the specified
        DataCube  buffer  (default:  CLEAN) and planes (default: variables FIRST
        and LAST).  The current polygon or mask (see commands SUPPORT and  MASK)
        is  used to define the area on which the pixels are to be taken into ac-
        count, except when /EDGE 0 is mentionned.

        In addition to Min and Max, the command prints 3 noise numbers:
        - the rms inside the current support (whose value depends on the source
        strength and structure)
        - the rms outside of the support (a good estimate of the effective
        noise), returned in variable STAT_NOISE.
        - the theoretical thermal noise (that would be the expected noise unless
        the data is dynamic range limited, or unless the weights were
        not set properly)

        Caution: Statistics on primary-beam corrected  images  (SKY)  cannot  be
        properly computed in this way, because the noise is non uniform.

Subsections

- STATISTIC /NOISE
- STATISTIC /EDGE