similar to: maptools package

In R's maptools package, is there a built-in function to test if a given point is "inside" a given polygon on the map? The map was loaded from an ESRI Shapefile. The point's latitude and longitude are known. Thank you! Aleks -- ------------------------ Aleksandr Andreev Fulbright Fellow Graduate School of Management St Petersburg State University

Greetings! I am trying plot some data on a map in R. Here's the scenario. I have a variable called probworkinghealthy which contains a predicted probability of employment for every individual in my sample (about 100,000 observations). I have another variable, called a001ter, which contains the subject of residency in the Russian Federation (akin to a US state) for every individual in the

I am having difficulty loading a points shapefile (1600 records) I generated from ArcGIS as a PointsSpatialDataFrame using the maptools readShapePoints function. library(maptools) surveypts <- readShapePoints(system.file("C:/temp/survey.shp", package="maptools")[1] Error in getinfo.shape(filen) : Error opening SHP file I've tried numerous re-exports and renames of the

Hello, I'm having problems reading a shapefile with read.shape (maptools). I'm absolutely sure my file is there, but I get "no such file". The wd is ok, since read.table for example does find the file. > getwd() [1] "D:/somedirectory/R scripts" > read.table("cities.shp") Error in read.table("cities.shp") : empty beginning of file In addition:

Hi, I meet a strange trouble writing shapefiles with write.pointShape() from maptools. > write.pointShape(mylines[,5:9], file="Sxtplinshp", mycoordspt) Error in write.pointShape(mylines[, 5:9], file = "Sxtplinshp", mycoordspt) : shapefile names must conform to the 8.3 format It seems that the function request a special shapefile name spelling (conformed to 8.3

Hi, I'd like to read a shapefile into a Map object. This is exactly what read.shape{maptools} is suppoed to do, according to the documentation I found in the link below. However, this doesn't seem to work library(maptools)x <- read.shape(system.file("shapes/sids.shp", package="maptools")[1])Error: could not find function "read.shape" I haven't

Dear list members, I am trying to use the maptools library to display geographical data. At the moment I have some trouble understanding how the " auxvar " variable is supposed to be used in the plot.Map function. I am using R Version 1.8.1 (2003-11-21) on Linux Looking at the plot.Map function itself, I see that it calls a color.ramp function (I am reporting only the relevant

Hey, A basic question. Is there anyone that knows a good text on using the R packages map and maptools for R? I have read the references for both but having trouble getting started. What I want to do is to load a map (.shp file) and display statistics on this maps using colours. Thanks in advance. Kind regards, John

Dear R users, I use R 2.4.0 on an iMac running Mac OS X 10.4.8, with a 2.16GHz Intel Core 2 Duo and 2GB 667 MHz DDR2 SDRAM. > sessionInfo() R version 2.4.0 (2006-10-03) i386-apple-darwin8.8.1 locale: es_ES.UTF-8/es_ES.UTF-8/es_ES.UTF-8/C/es_ES.UTF-8/es_ES.UTF-8 attached base packages: [1] "methods" "stats" "graphics" "grDevices"

Dear R experts, I am new to the list and R software. I need to convert arcview file to Winbugs having R has middle package. Got from friends that it is possible following the steps: 1. Converting arcview shapefile to "cgm clear text file" 2. Downloading "convert.r" to into R 2.1 use source("convert.r") 2.2 convert("filename_cgm") without the

Hola a todos. Estoy utilizando R , más concretamente los paquetes maptools y sp, para realizar mapas de España por comunidades y provincias y de Andalucía por provincias y municipios. El caso es que para el mapa de municipios en Andalucía, una vez leído el fichero shp con readShapePoly , si luego por ejemplo , quiero poner todos los polígonos de un color utilizando library(maps)

Hello R Community, I have imported a dataset which contain X Y coordinates and would like to recreate a shape file after some data analysis. What i have done is to import some taxlot data and join them based on some criteria. I want to check to see how well the joining went by reviewing the results in GIS. A couple things. I cant seem to import a shape file correctly using the maptools

Greetings. I'm trying to label some points using the identify() command. The labels and the coordinates are coming from a csv file. The file encoding is UTF-8. If I use labels in Latin characters, everything comes out OK. But when I switch to using labels in Cyrillic, I get garbage. To check that my file is not corrupt, I've attempted to create the labels using the text() command and

I am not sure a previous e-mail reached the list (no mail aknowledgement from R-boundle etc.). The question was how to write polygon or segment coordinates into a shapefile set or any other ArcGIS supported format. The library shapefiles seems to do something but the documentation is a bit beyond of my mind.... and I cannot get the meaning of the functions write**** and its application to the case

Hello. I'm new on that forum, so I would use some help... I'm programing with R program, have some exercise to do. So here it goes. 1. I have to upload two libraryes "sp" and "maptools" 2. This command is troubling me : towns <- readShapeSpatial("OB/OB.shp") 3. When I'm pressing f5, there is an error called: Error: could not find function

Hi, we all know that R is powerful in dealing with graphics. I am now trying to use R to show some geographic attributes for a specific geographic area on a graph. For example, if I would like to generate a graph showing the population densities (in terms of the intensity of colors) for Illinois State by zip codes. I did some research; and it seems that package "maptools" is

Hi, I was plotting or creating a map for Texas school districts using the shape file of Texas. I could not find any other helpful mail in the mailing list. txshp<-read.shape(system.file("S:\\Districts_10_11.shp", package="maptools")) Error- read.shape no found. But read.shape is there in maptools. If anyone can help me out it will be great. Thanks in advance. Shant

Hi, I want to use map("state") and have the ecoregion shape (please see link) file projected onto this. ftp://ftp.epa.gov/wed/ecoregions/cec_na/NA_CEC_Eco_Level3.zip ftp://ftp.epa.gov/wed/ecoregions/cec_na/NA_CEC_Eco_Level3.zip Could someone please show me how; I have never messed with this sort of thing. Thanks. -- View this message in context:

Hi list. I would like to know if someone had already successfully loaded and Arc/Info Ungenerated (.dat – extracted from http://rimmer.ngdc.noaa.gov/mgg/coast/getcoast.html) file on R. I’m able to do so with shape files using maptools functions, but these ungenerated data are making me crazy. I don’t have any of ArcGIS tools (one of them probably can do that), and I can’t find any free tool that

¿Existe alguna función en el paquete "sp" para crear un mapa de comarcas a partir de uno municipal? El "shp" de los municipios lo tengo… necesito crear el "shape" comarcal… Lógicamente tengo un data.frame con la variable "comarca"… Normalmente en google suelo encontrar estas cosas, pero en este caso estoy inusualmente muy perdido… Gracias de antemano.