similar to: Distance matrix in SpDep-package

Dear R-users, Is there an easy way to determine all possible vectors of length 21 with each entry having permutations from 0 to 4, instead of doing it like this? It really takes up too much time, and I am convinced that there exists something easier. Can you help me? Thank you in advance! Kind regards, Elke for (a in 0:4){ for (b in 0:4){ for (c in 0:4){ for (d in 0:4){

Dear forum,   I am working in R 2.9.1 and I am trying to sample locations from a network file. Reading in nor plotting is a problem, however when I am trying to sample from the file I get the following message:   nwlim<-readShapeLines("C:/Limburg_nwshape", proj4string=CRS("+init=epsg:31300")) plot(nwlim)   randacc<-spsample(nwlim,n=1000,"random")

Dear forum, I would like to use the kernel2d or spkernel2d in the Splancs-package, but it does not recognize my polygon data. "Error in kernel2d(as.points(ptsbin), polygonprov, h0 = 2, nx = 100, : " is the error message. Invalid poly argument The data are defined as follows: polgonprov<-list(x=polyprov$X, y=polyprov$Y) with X and Y coordinates in the Lambert1972

dear R users, I have troubles performing Moran.I test as suggested on http://www.ats.ucla.edu/stat/r/faq/morans_i.htm my spatial data are longitude and lattitide of communities. The calculation of the inverse distance matrix according to the homepage (using my data) datAL <- read.csv2("C:\\Konvergenz AL.csv", header=T) ALdist <- as.matrix(dist(cbind(datAL$L?nge,

Hi all, I am attempting to create a weights object and perform a Moran I test as well. I have a very large spatial weights matrix (roughly 22,000x22,000) that was created in Excel and read into R, and I'm now trying to implement: library(spdep) SW=mat2listw(matrix) I am getting the following error: Error in if (any(x<0)) stop ("values in x cannot be negative"): missing value

[This email is either empty or too large to be displayed at this time]

Hello everybody, I would like to determine kernel densities along a maze. I have distances from each point of the maze to its neighbours and I managed by means of the mat2listw-function in the Spdep package to assign neighbours to each point. Each point now has a value for a Z-variable and it is this variable that I would like to use to determine a density for each point with neighbours

Hi, Here is a listw object z corresponding to the matrix W. I understand n, nn, S0, S1 and S2 in the weights constants summary. Is it simply so that n1 = n-1, n2 = n-2 and n3 = n-3? If this is true where they are needed? Just wondering Osmo > W [,1] [,2] [,3] [,4] [,5] [,6] [,7] [,8] [,9] [1,] 0 1 0 1 0 0 0 0 0 [2,] 1 0 1 0 1 0

Hello, I have been using the package "spdep" to run spatial regressions on a data set with about 2500 observations. It has performed well up until now, but the following code resulted in an error: > load("Panel.90s.ok.R") > attach(Panel.90s.ok) > neighs<-dnearneigh(cbind(x,y),0,50000) > help(nbdists) > dists<-nbdists(neighs,cbind(x,y)) >

Hi everyone, The Spatial Dependence (spdep) library, has a function called 'dnearneigh', which identifies neighbours of region points by Euclidean distance between lower (greater than) and upper (less than or equal to) bounds. The function returns a list of integer vectors giving the region id numbers for neighbours satisfying the distance criteria. I have used this to identify the

-- _______________________________ Paul K. Musingila University of Hasselt, I-Biostat, Diepenbeek, Belgium Mobile: +254-724-423532, +32-48-637-4558 E-mail: paul.musingila at student.uhasselt.be, pmusingila at gmail.com Skype: pmusingila "When darkness overtakes the godly, light will come bursting in" Psalm 112:4

Hi all, I am trying to run an autologistic model using the function errorsarlm from spdep package. **I built an XY matrix extracting the two colums from matriz** coords1<-matriz[matriz$casos1==1, c(4,5)] coords1<-as.matrix(coords1) **I identify neighbours of region points** nb20<-dnearneigh(coords1,0,20,longlat=TRUE) ** I build a neighbours list with spatial weights**

Hello List, I'm a very new user to the R system. I'm only beginning to learn the basics, but so far I've been able to do little more than try a few examples, and of course begin reading the documentation. My primary motivation for exploring R is the availability of tools like the 'spdep' package for calculating spatial statistics such as Geary's C and Moran's

Thanks Mike. My data has longitude and latitude coords and I used distAB {clim.pact} then mst {ape} to calculate my minimum spanning tree. The nodes are telecoms sites from all over Australia. My goal is to determine the minimum cost of linking them via cabling, and I'm starting by calculating the distance "as the crow flies", but will probably eventually need to calculate the

useR's I need transform the matrix wdat [,1] [,2] [,3] [,4] [,5] [,6] [1,] 0 1 0 1 1 0 [2,] 1 0 0 1 1 0 [3,] 0 0 0 0 1 1 [4,] 1 1 0 0 1 0 [5,] 1 1 1 1 0 0 [6,] 0 0 1 0 0 0 to gal object. How I do with spdep? Thanks in advance for the help. Bernardo. University of Concepci?.

Dear useRs: First of all I would like to thank all the responses. I've an error with package "spdep". I am working with a Windows XP machine (AMD-2000-XP RAM-256DDR) and 1.8.0. R-version and when I try to load spdep appear the following error: > library(spdep) Error in loadNamespace(i, c(lib.loc, .libPaths()), keep.source) : There is no package called

Hello all, I am trying to install the package 'spdep' and get the following error message when I invoke library(spdep) at the R prompt: Error in loadNamespace(i, c(lib.loc, .libPaths()), keep.source) There is no package called 'maptools' Error in library(spdep) : package/namespace load failed I get this if I try to install 'on the fly' AND if I download directly from

Beste, ik heb getracht om Matlab (versie 6.0.0.88 Release 12 op Win98 op aparte partitie op mijn hd) mbv wine te draain op mijn RedHat 7.0. Het betreft codeweavers-wine, versie 20010112. Matlab start heel fijn op, wine spuwt een proces of 15 en vreet zowat al mijn geheugen op maar voor de rest lijkt hij wel te werken. (Andere applicaties zoals notepad, wordpad, freecell, etc werkten perfect..)

My question is in regard to the spdep and GeoDa packages. Do you know how to extract a neighborhood/adjacency matrix from R? I need a matrix that has all the neighborhoods on the X and Y axis, and then a r=1 when the neighborhoods touch, and a r=0 when neighborhoods don't touch. I think the Moran's I functions use a matrix like this when they estimate Moran's I. I can estimate

Dear All, We aim to remove the spatial structure of our data using Moran Eigen Vectors and spdep package . Our data has 3694 samples and 13 variables. The computer stop working after almost 4 days of processing (we found it emitting a sharp sound and with all colors on the screen. No wories, it was restared without problem!). And we are left with nothing: no result file was produced since the