correlationmatrix

 CORRELATIONMATRIX Interactive plot of correlation matrix

 CALLS
       [C,idxc,idxf,namesc,namesf]=correlationmatrix(C,names)
       [C,idxc,idxf,namesc,namesf]=correlationmatrix(C,names,zoom)
       [C,idxc,idxf,namesc,namesf]=correlationmatrix(C,names,zoom,sortopts)

        C: Matrix to be sorted
    names: Can be either: 
             - Empty string (to use default names)
             - Cell array with strings (to be used both in rows and columns)
             - Cell array containing two cell arrays of strings: one for
             rows and other for columns
     zoom: scalar number. 1=zoom mode, 0=no-zoom mode
 sortopts: Can be either:
               ''   sort rows and columns by columns
               'c'  sort columns by columns 
               'f'  sort rows by rows 
               'cf' sort rows by rows and columns by columns
               'no' no sort

 DESCRIPTION
       This tool allows to visualize big correlation matrices along with
       the variable names, allowing to zoom in and out parts of the matrix
       in an interactive way.