Begin by creating a parallel pool.
Then construct a ParforProgMon object:
ppm = ParforProgMon(strWindowTitle, nNumIterations <, nProgressStepSize, nWidth, nHeight>);
strWindowTitle is a string containing the title of the progress bar
window. nNumIterations is an integer with the total number of
iterations in the loop.
nProgressStepSize specifies to update the progress bar every time this
number of steps passes. nWidth and nHeight specify the size of the
progress window.
Within the parfor loop:
parfor (nIndex = 1:nNumIterations)
ppm.increment();
end