[R-sig-eco] Transform pairwise resistance matrix (from Circuitscape)

[kin onn]

Dear R-sig users,
I have independent variables in the form of pairwise resistance matrices from Circuitscape that I would like to use in a dbRDA analysis using (eg. using capscale() in vegan). Does anyone know of a way that I can transform a pairwise matrix into a matrix that can be used as independent variables in a RDA analysis? I read a paper that z-transformed and standardized a pairwise resistance matrix but I'm not sure how to do that. Any help would be greatly appreciated. Below is an example of a resistance matrix I am trying to transform

0 1 2 3 4 5 6 7 8 91 0 0.5148327242 0.5354623905 0.5479114511 0.5479114511 0.5601841697 0.639462287 0.6379687417 0.70380367092 0.5148327242 0 0.381577923 0.4123364573 0.4123364573 0.381580919 0.4868878634 0.506852375 0.58775979543 0.5354623905 0.381577923 0 0.4358470864 0.4358470864 0.4453216218 0.5311204258 0.5313504077 0.59827291434 0.5479114511 0.4123364573 0.4358470864 0 0.375 0.4349403022 0.4954025248 0.4906177218 0.55455258345 0.5479114511 0.4123364573 0.4358470864 0.375 0 0.4349403022 0.4954025248 0.4906177218 0.55455258346 0.5601841697 0.381580919 0.4453216218 0.4349403022 0.4349403022 0 0.5084746282 0.5295915461 0.60014816337 0.639462287 0.4868878634 0.5311204258 0.4954025248 0.4954025248 0.5084746282 0 0.5624537263 0.72640964028 0.6379687417 0.506852375 0.5313504077 0.4906177218 0.4906177218 0.5295915461 0.5624537263 0 0.65419523879 0.7038036709 0.5877597954 0.5982729143 0.5545525834 0.5545525834 0.6001481633 0.7264096402 0.6541952387 0

Best regards, Chan 

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