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ycoord
2012 Apr 06
3
filling the matrix row by row in the order from lower to larger elements
...much for the tips!
Dimitri
input<-as.matrix(data.frame(a=c(5,1,3,7),b=c(2,6,4,8)))
(input)
desired.result<-as.matrix(data.frame(a=c(100,0,100,0),b=c(0,100,0,100)))
(desired.result)
result<-as.matrix(data.frame(a=c(0,0,0,0),b=c(0,0,0,0)))
for(i in 1:nrow(input)){ # i<-1
mymin<-i
mycoords<-which(input==mymin,arr.ind=TRUE)
result[i,mycoords[2]]<-100
input[mycoords]<-max(input)
}
(result)
--
Dimitri Liakhovitski
2012 Feb 23
0
resistanceDistance representation
...ot;,F,scl=T)
> MY_Rcorrection<-geoCorrection(MY_transition,"r",F,scl=T)
My coords are 44 points where samples were taken (some further genetic
analyses are programmed), but i've also tried with only two points:
> coords<-read.csv("coords_md.csv",header=F)
> mycoords<-as.matrix(coords)
> my_spatialpoints<-SpatialPoints(mycoords)
Finally I calculated three geographical distance matrices:
> geodist <- pointDistance(my_spatialpoints,longlat=FALSE)
> summary(geodist) V1 V2 V3 V4 V5...