CLsqFit:GetNumPtsUsed

The GetNumPtsUsed method returns the number of points used in computing the fit. This number ignores points that were deleted or rejected from the total number of points added to the sample.

Syntax

nPts = CLsqFit:GetNumPtsUsed( nChannel* )

n1, n2, n3, n4 = CLsqFit:GetNumPtsUsed()

where

nChannel is an optional argument that specifies the channel for multi-channel (RGB) data.

nPts, n1, n2, n3, and n4 are the number of points used for fitting all channels when nChannel is not specified.

Example

The following script fits a 2x2 polynomial with data rejection enabled, then retrieves the number of points used in the fit.

L = CLsqFit:new()	-- create a CLsqFit object
L:SetNumCoefs( {2.2} )	-- set 2x2 coefficients to fit a warped plane
L:AddPt( {3, 5}, 5.15 )	-- add a point with x = 3, y = 5, z = 5.15
	-- add more points
L:DoRejection( true )	-- enable bad data rejection
L:Fit()	-- Fit the polynomial
nU = L:GetNumPtsUsed()	-- number of points used
nR = L:GetNumPtsRejected()	-- number of points rejected
Printf( "nUsed=%d, nRej= %d\n", nU, nR )	-- list the number used and number rejected