/usr/share/psychtoolbox-3/PsychGLImageProcessing/private/fit.m is in psychtoolbox-3-common 3.0.11.20140816.dfsg1-1.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 | function [scal] = fit(scal)
% Generate the polynomial fitting coefficients and save them in the
% calibration file. Fit the pixel settings to the real position that the
% dots have in centimeters.
% the real position in centimeters of the dot selection:
selxcm = scal.xcm(scal.FITDOTLIST);
selycm = scal.ycm(scal.FITDOTLIST);
% do the fitting
scal.xFitCoef = poly2fit(selxcm, selycm, scal.SELECTXCALIBDOTS, scal.NOrderPoly);
scal.yFitCoef = poly2fit(selxcm, selycm, scal.SELECTYCALIBDOTS, scal.NOrderPoly);
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