The land-use map published in 1955 was due to be brought up-to-date. The new map, like the old one, makes use of the method of intensity coefficients, but the computer enables an automatic classification to be made, the interpretation of which is of great interest. One could go further and, in particular, remake the 1955 map with the automatic classification. The changes in the definition of "distance" between two regions also increases the possibilities.
