getInnerOuter.m

%GETINNEROUTER determine the number of frames the mouse was in an inner
%   zone vs an outer zone of the arena
%
% [NINNERZONE, NOUTERZONE] = GETINNEROUTER(MOUSEPOS, INNERZONE)
%
% MOUSEPOS an Mx2 matrix containing the position of the mouse in all frames
% INNERZONE a four-element vector of the form [x y w h] describing the
%  location of the inner zone in mm
%
% Friedrich Kretschmer
% Max-Planck Institute for Brain Research
% sciclist@brain.mpg.de

function [nInnerZone, nOuterZone]  = getInnerOuter(mousePos, innerZone)
    innerZoneFrames = mousePos(:,1) > innerZone(1) &...
        mousePos(:,2) > innerZone(2) &...
        mousePos(:,1) < innerZone(1) + innerZone(3) &...
        mousePos(:,2) < innerZone(2) + innerZone(4);

    outerZoneFrames = ~innerZoneFrames;

    nInnerZone = sum(innerZoneFrames);
    nOuterZone = sum(outerZoneFrames);
end