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imagepol.sigmastokes - Function



Package general
Module images
Tool imagepol


Find standard deviation of specified Stokes data


Synopsis
sigmastokes(which, clip)


Arguments

which in Specify Stokes
    Allowed: String: One of 'I', 'Q', 'U', 'V' (case insensitive)
clip in Clip level for auto-sigma determination
    Allowed: Float
    Default: 10


Returns
Float or fail



Description

This function (short-hand name ss) returns the standard deviation of the noise for the specified Stokes. Outliers from the mean are clipped at the specified level.



Example 
- p := imagepol('stokes.cube')
- sigq := p.sigmastokes('q', 10.0)



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2006-08-01