/usr/share/psychtoolbox-3/PsychCal/CylToSensor.m is in psychtoolbox-3-common 3.0.11.20140816.dfsg1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | function sensor = CylToSensor(cyl)
% sensor = CylToSensor(cyl)
%
% Convert from cylindrical to sensor coordinates.
% We use the conventions of the CIE Lxx color spaces
% for angle. This inverts SensorToCyl, see that routine
% for description of coordinate systems.
%
% See also SensorToCyl, SensorToPolar, PolarToSensor.
%
% 10/17/93 dhb Wrote it by converting CAP C code.
% 2/20/94 jms Added single argument case to allow avoiding cData
% 4/5/02 dhb, ly Change name.
% 11/6/06 dhb Only allow one arg.
sensor(1,:) = cyl(1,:);
sensor(2,:) = cyl(2,:) .* cos( cyl(3,:) );
sensor(3,:) = cyl(2,:) .* sin( cyl(3,:) );
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