SYNOPSIS:
    GETNOISE x1 y1 z1 x2 y2 z2

DESCRIPTION:
    Estimate noise levels for gaussian noise. This is done by walking
    the histogram, finding the mean value and summing up the
    voxel counts until they reach sigma/2sigma thresholds.
    The result is shown in gnuplot, if available.
    This command is deprecated and should be replaced by /GETSTATS/
    and /GETHISTOGRAM/.

SEE ALSO:
    GETSTATS, GETHISTOGRAM
