CStats:MeanSdev CStats:Rank

CStats:Median


The Median method computes the median value inside a rectangular region of the image. The rectangle and image must have been previously initialized for the CStats object.

Syntax

nValue, Sdev = CStats:Median()

    On success, returns the median value as a number.

    On success, the second returned argument, Sdev, is the standard deviation about nValue

    On failure, returns 0, 0.

Example

Suppose a CImage named I and a CRect named R exist. The following script fragment returns the median inside a rectangle on the image:

 

S = CStats:new()

-- create a CStats object

S:Init( I, R )

-- specify CImage and CRect to measure

nVal = S:Median()

-- returns the median

Printf("Median=%lg\n", nVal)

-- list the results

S:delete()

-- when done with S, remove it from memory

Related Topics

CStats, Rank, CImage, CRect