search for: td_matrix

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2007 Jul 14
0
Extending Matrix class
...do not know in advance what the IF> matrix "m" actually is (we only know it is *some* IF> Matrix, e.g., we do not know if it is a dgCMatrix or a IF> lgCMatrix or ...). Is there a (simple) solution? Well, yes, but probably not the one you had wanted: setClass("TD_Matrix", representation(data = "Matrix", Weighting = "character")) A <- spMatrix(10,20, i = c(1,3:8), j = c(2,9,6:10), x = 7 * (1:7)) tdr <- new("TD_Matrix", data = A, Weighting = "foobar") tdr ---------------- Now...