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...withinSS (??) as the sum of SS for all clusters ssbetween_grid40km = SSTot-ssw_grid40km RSQ_grid40km2 = ssbetween_grid40km/SSTot # R-square Am I right? Does this correspond to SAS's R2? Many thanks, Yan Ressources Naturelles Canada Service Canadien des Forêts - Centre de Foresterie des Laurentides 1055, rue du PEPS CP 10380, Succ. Ste-Foy Québec, QC, G1V 4C7 Tel. : +001 418 649-6859 Fax : +001 418 648-5849 email : Yan.Boulanger@nrcan.gc.ca [[alternative HTML version deleted]]

I am trying to create the perfect development environment for rails and i dont know exactly which way to go. Do i create a windows environment or a *nix environment. If i go *nix, what distro is best suited for rails. I would be using mysql, so that would come in to play. If i go *nix, i would use apache. Any ideas for the right environment would be greatly appreciated. I guess the major choice is