rgb2ind changes

[mikez23]

I have made changes to rgb2ind2.m. I have attached a file that includes 
the diff file. sortbynorm is a function that sorts a matrix by the rows 
of the norms. getclosestcolors gets the closest index in a colormap to 
the picture color.
I will change getclosestcolors.cc to fit the octave style better.
                                                  Mike Zielinski

rgb2ind.tar.gz
Description: GNU Zip compressed data