search for: spartina

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2011 Sep 25
4
Trouble creating and adjacency matrix
Hello all, I'm having trouble creating an adjacency matrix. Basically, I need to turn the following distance matrix into an adjacency matrix based on whether values are >1.5 or not. If they are >1.5, then the returned value should be 0. If they are =<1.5, then the returned value should be 1. DistanceMatrix: A B C D E [1,]
2011 Sep 26
3
Nearest neighbour in a matrix
Hello all, I am brand new to R and doing an exercise for a class. I need to find the nearest neighbour for points in the following matrix: > DistanceMatrix x1 x2 x3 x4 x5 [1,] 0.000000 2.828427 1.581139 2.236068 2.000000 [2,] 2.828427 0.000000 1.581139 4.123106 2.000000 [3,] 1.581139 1.581139 0.000000 2.549510 2.121320 [4,] 2.236068 4.123106 2.549510
2011 Oct 10
1
Importing from Fortan
Hello all, how do I import a Fortran file (f3.1) into one column in R? I've tried this (I'm a total beginner as you can see): > FortranData<-read.fwf("C:\\Users\\format3_1.txt",rep(3,20)) Warning message: In readLines(file, n = thisblock) : incomplete final line found on 'C:\Users\format3_1.txt' > FortranData V1 V2 V3 V4 V5 V6 V7 V8 V9 V10 V11 V12