idamnjanovic@60: function y = normcols(x)
idamnjanovic@60: %NORMCOLS Normalize matrix columns.
idamnjanovic@60: %  Y = NORMCOLS(X) normalizes the columns of X to unit length, returning
idamnjanovic@60: %  the result as Y.
idamnjanovic@60: %
idamnjanovic@60: %  See also ADDTOCOLS.
idamnjanovic@60: 
idamnjanovic@60: 
idamnjanovic@60: %  Ron Rubinstein
idamnjanovic@60: %  Computer Science Department
idamnjanovic@60: %  Technion, Haifa 32000 Israel
idamnjanovic@60: %  ronrubin@cs
idamnjanovic@60: %
idamnjanovic@60: %  April 2009
idamnjanovic@60: 
idamnjanovic@60: 
idamnjanovic@60: y = x*spdiag(1./sqrt(sum(x.*x)));