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Adds a column to the receiver

The new column has header 'None'

        aList: A list containing the elements to add
                Must containing the correct number of elements.
        index: The index at which to add the new column.
                -1 indicates it should be placed at the end.

src/p/e/PEATDB-2.3/PEATDB/plugins/PCA.py   PEATDB(Download)
	#Write out vectors
	ev = Core.Data.Matrix.Matrix(rows=list(eigenvectors))
	ev.addColumn(m.columnHeaders(), 0)
	headers = ['Variables']
	for i in range(m.numberOfColumns()):