idamnjanovic@70: function y = normcols(x)
idamnjanovic@70: %NORMCOLS Normalize matrix columns.
idamnjanovic@70: %  Y = NORMCOLS(X) normalizes the columns of X to unit length, returning
idamnjanovic@70: %  the result as Y.
idamnjanovic@70: %
idamnjanovic@70: %  See also ADDTOCOLS.
idamnjanovic@70: 
idamnjanovic@70: 
idamnjanovic@70: %  Ron Rubinstein
idamnjanovic@70: %  Computer Science Department
idamnjanovic@70: %  Technion, Haifa 32000 Israel
idamnjanovic@70: %  ronrubin@cs
idamnjanovic@70: %
idamnjanovic@70: %  April 2009
idamnjanovic@70: 
idamnjanovic@70: 
idamnjanovic@70: y = x*spdiag(1./sqrt(sum(x.*x)));