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Message-ID: <20051220175001.25334.qmail@web10713.mail.bbt.yahoo.co.jp> Date: 2005-12-20T17:50:01Z From: Hisaji ONO Subject: Tomlin's Map Algebra for sp Hello. Sp package has grid & grid topology classes. It seems to use them to be able to implement famous map algebra(or cartographic modelling). Any plan to implement this analysis method to sp package? Regards.