search for: zerorows

This is for ACroske but I can't find his email so I'll just send it to the list. Hi ACroske: The code below takes a zeros and ones matrix and puts ones in the places you wanted. It can be made shorter ( maybe ?. i haven't thought about that ) but first let me know if that's what you wanted ? The original matrix is called binary.matrix and the final matrix is called tempbinmat.

I was looking for an R-package that would reduce matrices to row-echelon form, but Google was not my friend; any leads? If not, I wonder if the problem could be expressed in terms of constraint satisfaction...