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4 results for “from:Xu Yuan”

test of spatial dependence??
Xu Yuan · Dec 5, 2006 · r-help

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how to define w matrix in my case?
Xu Yuan · Dec 11, 2006 · r-help

hello list, I have N agricultural fields (some of them share borders, some don't) with ph as the variable of interest. Since I want to test the spatial autocorrelation, I need to come up with the w matrix. The...

how to test difference in my case?
Xu Yuan · Dec 27, 2006 · r-help

hello all, I wonder if anyone could give me a hint on which statistical technique I should use and how to carry it out in R in my case. Thanks in advance. My data is composed of two columns, the...

test of spatial dependence?? - ask an ecologist?
Xu Yuan · Dec 6, 2006 · r-help

Thanks David and Milton for replies. No, I don't have the coordiates. In other words, my data are not point data. But I think there is a way to test of spatial dependence for areal data or lattice data...

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