Outputs a progress report w/ percent complete and estimated time till completion. Supply start time, iteration #, number of total iterations. Accuracy improves over iterations. Works best when iteration time does not change over time.

progress.m

function time = progress( startT, i, N )
% PROGRESS
% Outputs estimated time and percentage till completion
% To use, before loop, save startT ( startT=clock; )
% then, inside loop, call progress using following variables:
%   startT : beginning time defined above using clock
%   i      : ith iteration
%   N      : total number of expected iterations
%
% Hyo Byun
% Mayberg Lab, Emory University
% 2013

currentT=clock;
percentComplete=i/N*100;
timeLeftSecs=etime(currentT,startT)*(N/i)-etime(currentT,startT);

timeString='';
nhours = 0;
nmins = 0;
if timeLeftSecs >= 3600
    nhours = floor(timeLeftSecs/3600);
end
if timeLeftSecs >= 60
    nmins = floor((timeLeftSecs - 3600*nhours)/60);
end
nsecs = timeLeftSecs - 3600*nhours - 60*nmins;
timeString = [sprintf('%02.0f',nhours) ':'  sprintf('%02.0f',nmins) ':' sprintf('%02.0f',nsecs) ''];

fprintf('%2.2f%%  | %s \n', percentComplete, timeString );

end