search for: shapefiles

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 t...

...? 3rd Qu.:3375529?? 3rd Qu.:8.180? ?Max.?? :610354?? Max.?? :3375751?? Max.?? :8.756? ? #write the shapefile writePointsShape(crest.sp, "I:/LA_levee/Shape/llev_crest_pts6") ? If I load this shapefile in ArcGIS is has no projection. I also looked at the write.shapefile command from shapefiles library and again I get a file without projection. Is there any way to write the projection for the shapefile in R? Probably I can do something in ArcGIS, but I would like to have my shapefile from R complete. ? Thanks, ? Monica ?

My sincerest apologies, as this is a very elementary problem, but I have searched through archives and FAQs and on the web, and I am at the end of my own resources. I need to do analysis of a spatial point process occuring with four counties, using spatstat. I've had no trouble importing the shapefiles, but I can't seem to figure out what I need to do in order to use the boundary as an owin. Why I use the Map2poly command, it appears to work, but not when I attempt define the window using the shapefile; it also gives me errors when I try to define a ppp.object. I am using the latest release...

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 below: In simple words, is there a somewhere a function taking polygon coordinates (or simple segments) within R to a "ready to re...

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 combinin...

Hello I wonder if anybody can help, I am using the package adehabitatHR to estimate the potential distribution of a species using the command "domain" In the example given in the AdehabitatHS manual a map containing elevation information is loaded (class= spatial pixels data frame) as well as the GPS points of the animals being tracked, these are then plotted on each other and

...S.UTF-8 attached base packages: [1] "methods" "stats" "graphics" "grDevices" "utils" "datasets" "base" I get an error below whenever I try to plot a map from a shapefile imported into R; I've tried packages shapefiles and spdep, and two different shapefiles, and get the error in all 4 combinations. The shapefile is imported correctly, and I get the error only when I try to plot the map. I specifically use commands > library(spdep) Loading required package: tripack Loading required package: maptools Loa...

...the Interior US Fish & Wildlife Service California, USA http://www.fws.gov/redbluff/rbdd_jsmp.aspx > >From: Manuel Spínola <mspinola10@gmail.com> >To: Felipe Carrillo <mazatlanmexico@yahoo.com> >Sent: Sat, April 2, 2011 11:22:24 PM >Subject: Re: another question on shapefiles and geom_point in ggplot2 > >No problem, thank you very much Felipe. > >Best, > >Manuel > >On 03/04/2011 12:19 a.m., Felipe Carrillo wrote: >I meant to send you this one..Let me clean up the code a little bit and >>I will send it to you,,,do you mind if I send it...

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

Dear List, I have examined the sp, maptools, and shapefiles packages (Windows) but cannot seem to figure out a solution for writing shapefiles for 'curvy shapes'. The scenario is that I generate a series of polygons, circles, and ellipses on a plot and would like to convert them to shapefiles. Since the circles and ellipses are do not return a coo...

...apefile in UTM coordinate system and I would like to transform it to Lat/Log coordinates (WSG84). The package PBSmapping contains function convUL to transform between the two coordinate systems when data is in the form of a data frame with attributes specifying the coordinate system. However, when shapefiles are imported using function read.shape (package maptools), a list instead of a data frame is generated. I could extract all the polygons in the list and transform them, individually, but I hope there is an easier way of doing that. Besides, the shapefile i'm trying to convert has two differen...

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...

...le of US states and check whether or not a set of points are within the boundary of these states. I have the shapefile, I have the coordinates but I'm having a great deal of difficulty bringing the two together. The problem is the various GIS packages for R do not play well with each other. sp, shapefiles, maptools, etc all use different data structures. Can someone suggest a simple set of commands that will work together that will: 1) load the shapefile data. 2) Allow me to test whether or not a (lng,lat) coordinate pair are inside or outside the polygons defined in the shapefile. Many thanks, sc...

I have several large shapefiles that I need to use to draw a map. I want to simplify the files and then save the output so that I can use them again. The methods that I have tried do not allow me to save the simplified output as a shapefile. I have tried: thinnedSpatialPoly in the package maptools, but I understand that you cann...

Hi, I have done the interpolation for my data and I was able to create the contours in multipanel with the help of Pascal. Now, I want to clip the contour with the shapefile. I want only the portion of contour to be displayed which falls inside the boundary of the shapefile. The data mydata.csv can be found on https://www.dropbox.com/s/khi7nv0160hi68p/mydata.csv The data for shapefile can be

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 Stable...

Hi! Im new to R and I need to interpolate a shapefile using kriging. I've been able to plot/read the shapefile using the package maptools or rgdal. I've searched the internet for sample codes but most of the kriging codes that I've found done in R is done using txtfiles or CSVs.  An example could be of great help. Thanks. [[alternative HTML version deleted]]

Hi, Is there a way, preferably with R, to read shapefiles and transform them in a format that I could then use with package PBSmapping? I have been able to read such files into R with maptools' read.shape and plot it with plot.Map, but I'd like to bring the data to PBSmapping and plot from there. I also looked at the package shapefile, bu...

I'm new to R and I'm working on point shapefiles. Is there a way that you could interpolate a shapefile via kriging in R using an attribute? All examples on the internet are using txt files and CSVs. Thanks a lot. [[alternative HTML version deleted]]

...n WSG84.? How do I change the projections to make them line up?? I tried mapproj but couldn't get it to work.? Any suggestions would be greatly appreciated.? ? My code is below.? I have also attached the shapefile and my data. ? Thanks in advance for your help. ? Aloha, ? Tim ? ? ? ? #Read ESRI shapefiles library(maptools) library (PBSmapping) setwd("E:/Telemetry_research/Kealakekua Bay MPA study/R bubble plot") hawaii.coast<- read.shape("coast_n83.shp") ? #Read data and convert to event data ? mydat<-read.table("my.event", header=TRUE) ? my.event<-as.EventData...