similar to: maps drawing

Hi Gurus! I have a job that is to get randomly samples from point-based GIS data (sp called shape GIS files) under the total sum resctricted. For example, I would like to take random smaples under the 1000 persons in each city. The randomly sampled persons should not be over 1000 any case. Thank you in advance, -- Kum-Hoe Hwang, Ph.D. Phone : 82-31-250-3283 Email : phdhwang@gmail.com

What tools and documentation exist for producing maps and working with polygon and polylist objects in R beyond the following: * Packages maps, mapproj, maptools, and mapdata. * Becker and Wilks (1993, 1995), listed as references in the documentation on the "map" function. Thanks, Spencer Graves

Hi Guys Thanks for this! As I am a beginner, I bet I'm running into some really basic problems. Using the example from the Map2poly function in maptools: try <- read.shape("euadmll.shp") mappolys <- Map2poly(try) # this produces 14 warnings() of the type: # 1: level 2 circularity at 62 in: .mtlbuild(.mtafters(r1), rD) # etc # 14: From next release, default hole handling

Hi All, Does anybody know of any existing functions that will calculate distance inland from a coastline? It's possible to test if a lon,lat location is land or sea using map.where(), but I need to add a buffer to this of say 2km, to allow for points that are just on the coast, and below the resolution of the worldHires database. I'm working with a marine mammal satellite telemetry

I have no experience with GIS whatsoever. I really know squat about it. I'm currently working on a project to plot locality data for wildlife on a map of Shasta County. This is for a new herpetological club that hopes to track strength of our local herp populations, since it seems evident that in the last 20 years we lost one species of frog and are close to losing another (probably less

I just uploaded two packages to CRAN. shapefiles_0.1.tar.gz - functions to read and write ESRI shapefiles (including dbfs) emme2_0.1.tar.gz - functions to read binary data from an EMME/2 databank data (EMME/2 is a transportation modeling program) Please let me know if you find any bugs or have some suggestions. Thanks. Regards, Benjamin Stabler Transportation Planning Analysis Unit Oregon

Hi R users I need the map of France?s ? communes ? (towns) to build a map Is there a way to get it? More generally: How to do to get the map of a country and its different geographical levels? Best regards -- View this message in context: http://old.nabble.com/map-of-a-country-and-its-different-geographical-levels-tp26225645p26225645.html Sent from the R help mailing list archive at

Hi all, who knows how to get an ESRI Shapefile for the NUTS-2 Regions of the enlarged European Union? Particularly I want to draw maps of Germany, Poland, Czech Republik, Hungary and Austria. I've found Shapefiles for the US, Russia and other countries elsewhere in the web, but for Europe it seems really difficult. With many thanks for any hint Albrecht

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

The main limitation of the shapefiles package that I put together is that it does not create shapefiles from R objects - rather it only writes shapefiles that have been read into R and manipulated within the constraints of the existing file structure. By this I mean that for example you can change the coordinates of points and write them back out. Or you can add a bunch of blank columns in the

cheers , I need help in shapefile manipulations. I have two shapefiles of my country Cameroon. The first contain 10 provinces and each province contains a certain number of administratives units. I dont have ESRI Arc view. I want to add a admistrative unit of the center province to the map with 10 province. Is it possible to to take a peace of shapefile and combining it to another ? Thanks !

Hi all, I'm trying to draw a bubble plot over a map -- where the map shows local government areas (LGA) in Australia (or other structures under the Australian Standard Geographical Classification), but am not sure where I can find the data to plot such maps (e.g. draw the state of Northern Territory but also showing LGA divisions). Any help will be greatly appreciated, apologies if this is

Hi, ? I am trying to write a shapefile with projection. I have my data in a data.frame called try and consists in xy coordinates and a numerical attribute value z1. ? Libraries loaded are: sp, rgdal, raster, maptools ? head(try) ???????? x?????? ??? y??? ? ? ? ? ? ? ??? z1 1 610237.1 ???????? 3375751 ???????????? 8.221 2 610236.1 ???????? 3375750 ???????????? 8.153 3 610236.1 ????????

Hello, I would like to know if (as the usa map with Splus), it is possible with R to plot the french map and to add points (representing towns for instance) on the figure in the appropriate (x,y) system. Thank you. Nathalie Peyrard

Dear R user, I am running R under Windows 2000. I am looking for a routine for importing - shape files (ESRI) into R - dbase files (FOXPRO) into R and I am looking for time-space models for description and prediction of Bernoulli-, Binomial- and Poissonvaraibles. Thank's a lot for a reply. Sincerely yours, Ekkehardt Altpeter Swiss Federal Office of Public

Hi R-Help, I would like to make filled contour maps of ocean data overlaid by costlines from the map package. I can draw the filled contours and the coastlines om the same plot, but the filled contour also covers part of the land. To get rid of that I tried to draw a filled coastline map on top of the filled contour, but the filled map only draws the closed contours - so most of the land is

Dear all, I would like to employ a European map in a presentation. My idea was to use: library(mapdata) map("worldHires", c("Austria", "Switzerland", "Germany")) where I include all countries from my analysis as a vector of character strings like in the example above. Unfortunately, I was unable to specify the Baltic States (Latvia, Lithuania, Estonia) or

Dear All, This is probably a very basic question but: I have plotted a map of the Barents Sea and surrounding coastline using: map('worldHires',ylim=c(50,85),xlim=c(5,65),fill=T,resolution=0) map.axes() map.scale(x=30,metric=T) Next, I imported a shapefile with depth contours for the sea: contours<-read.shape("D://My Documents/BarentsSea.shp",dbf.data=T) (This is in

I am new with R and want do some analysis with a point vector data file. Any help is appreciate. Sunny [[alternative HTML version deleted]]

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: