stats (replaces TStats)
The stats function computes the mean, standard deviation, and other basic statistics for numeric data and returns them in an indexed table. The parameters may be a CImage, CMatrix, or CArray object, a 1-dimensional array, or a list of numbers. The array and list parameters must contain a mixture of numbers and strings that can be converted to numbers.
tbl = stats( CImage )
tbl = stats( CImage, CRect )
tbl = stats( CMatrix )
tbl = stats( CArray )
tbl = stats( table )
tbl = stats( num1, num2, num3, ... )
The returned value tbl is an indexed table containing the following 8 values:
tbl[1] is the mean value returned in table index 1.
tbl[2] is the median value returned in table index 2.
tbl[3] is the standard deviation returned in table index 3.
tbl[4] is the minimum value returned in table index 4.
tbl[5] is the maximum value returned in table index 5.
tbl[6] is the statistical skewness returned in table index 6.
tbl[7] is the statistical kurtosis returned in table index 7.
tbl[8] is the number of values in the sample returned in table index 8.
On success, tbl is returned.
On failure, nil is returned.
Suppose a CImage I exists. The following script returns the mean and standard deviation of 600 pixels in the corner of the image:
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-- computes values inside the CRect |
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-- list the result |
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-- when done with S, delete it |
Table and Array Functions, CStats class, CStats:Stats, CImage class, CRect class, mean, sdev
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