search for: csiss

Greetings: I am trying to work with spdep (everything is "brand new" downloaded this morning). OS = Windows 2000 (also up to date). The code I am using follows: #example gal.county=read.geoda("lnpilnd.GAL", row.names=NULL, skip=0) summary.nb(gal.county) Error in summary.nb(gal.county) : Not a neighbours list #end The gal file works just fine in GeoDa (also up to date).

Howdy All, I am looking for some good tutorials (books, websites, whatever) for calculating/testing for Spatial Autocorrelation using R. Specifically, I am wanting to test for autocorrelation of a number of variables measured at a set of discrete locations. Up to this point I have been exploring the "spdep" package and I can get "moran.test" to work, but I am concerned that

...geographical, data. The list also covers mapping and cartographic issues, and interfaces between R and geographical information systems. It can be accessed directly at: https://www.stat.math.ethz.ch/mailman/listinfo/r-sig-geo or through the R spatial projects web site: http://sal.agecon.uiuc.edu/csiss/Rgeo/index.html hosted by the Spatial Analysis Laboratory in the Department of Agricultural and Consumer Economics at the University of Illinois, Urbana-Champaign. I would be very grateful for comments on, and corrections and contributions to the web pages, in particular from authors and maintain...

...geographical, data. The list also covers mapping and cartographic issues, and interfaces between R and geographical information systems. It can be accessed directly at: https://www.stat.math.ethz.ch/mailman/listinfo/r-sig-geo or through the R spatial projects web site: http://sal.agecon.uiuc.edu/csiss/Rgeo/index.html hosted by the Spatial Analysis Laboratory in the Department of Agricultural and Consumer Economics at the University of Illinois, Urbana-Champaign. I would be very grateful for comments on, and corrections and contributions to the web pages, in particular from authors and maintain...

Hi everybody, I heard about "R(D)-COM Stat connector" for ArcGIS, but i am not sure what that is. I did a search in the archive but it seems i am not getting anything back. can anybody explain me what that is, and where i can find more info about it? There is any possibility to run R from inside ArcGIS? there is more than RArcInfo and Shapefile which can

I am new to R and have a question about spatial econometrics. I have noticed that you can easily test for spatial autocorrelation with the spdep package, but was wondering if any code has been written to correct for spatial autocorrelation? Or if there is any literature on this? Thanks. -Jill *************************************************** Jill L. Caviglia-Harris, Ph.D. Assistant

Hello! Here is my problem, I have got a data set that contains values of intensity over a regular interval of time. What I need to do is to resample this data set (or curve) at a different interval of time x (1000 predictions will be made to resample the curve). So in order to perform such an operation I am required to do some kind of interpolation. I know that through kriging, the

Hi, I've got some data in a data frame arranged like this: x y z othervariables .... 0.1 0.2 1.7 0.01 .... 0.2 0.2 1.3 0.23 .... 0.2 0.3 1.1 0.43 .... etc I'd like to plot a heatmap of this data, with x and y as the (x,y) co- ords and z defining the colour at each point. I'm having difficulty finding the correct functions to use. Can anyone make any recommendations? It seems

Hi, HP DL 385 G2. CentOS 5.1 Kernel 2.6.18-92.1.10.el5 I have a newly installed server that was running x. It told me there were updates to install. I accepted that all, except sysreport as I always seem to have problems installing. I rebooted, having set the default run level to 3. I then got a red screen with an "illegal OpCode" error message. I have used my CD to boot into rescue

Hi everybody, I'm performing a cluster analysis (pkg "cluster") on a dataset which includes 15 variables: is there a way to know how much each variable weighs on the final clustering output? Thanks Alessandro

Hi, I have a list of numbers. For each of the numbers, I take sum of squares of the numbers centered on the number chosen. If it is less than a certain constant, I will take the average of the numbers chosen. Anyone can give me a sample code. You help will be greatly appreciated. Peter [[alternative HTML version deleted]]

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

Dear all, I am interested in plotting maps visualizing spatial statistics in an aggregated fashion, according to administrative boundaries. More specifically, I have fitted a cross-section model on data regarding Italian "counties" (province, for Italian readers) and I would like to visualize residual behavior on a map, in order to have a first assessment of their spatial

Looking over the contents of various packages, including my own, it is clear that lots of things end up 'hidden away' in packages where they don't belong. My gregmisc package is a particularly egregious example, containing something from almost every functional category. I propose that from time to time the R community go through the complete set of packages and 'refactor'

...> If you are unsure of the result, and want to stay within the R framework, > consider calculating Moran's I using DCluster, or gearymoran() in "ade4". > Beyond that, you could access the GeoDa software (Windows, not R) and > documentation at http://sal.agecon.uiuc.edu/csiss/geoda.html, the site > also housing the R spatial projects web pages: > > http://agec221.agecon.uiuc.edu/csiss/Rgeo/ > > Please contact me off-list, or on the R-sig-geo list if you feel that > would help. > > Best wishes, > > Roger Bivand > > > > &g...