Displaying 20 results from an estimated 5000 matches similar to: "how to read point shp file to R?"
2004 Feb 26
1
writing polygons/segments to shapefiles (.shp) or other A rcGIS compatible file
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
2003 Dec 01
1
Re: using shapefile as owin
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
2005 Dec 29
3
importing shapefiles into spatstat
Dear R users,
I am using spatstat to analyze point patterns (tree locations). I would
like to import the shapefile with the study area polygons (six total) into R
and use it to create the window for the spatstat analysis. I do not simply
want to use a rectangle because the study areas spread out over 40000 ha.
Any suggestions would be greatly appreciated.
Thanks,
Charlotte Reemts
Charlotte
2004 Feb 25
2
writing polygons/segments to shapefiles (.shp) or other ArCGIS compatible file
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
2011 Oct 20
4
Randomized Points in space/ saving model results
A bit new to R and I'm working on something a bit more challenging than I am
used to- so here's whats going on:
Data inputs: 9 different shapefiles (.shp) of different point locations
(lat, long)
shapefile bounding box (lat/long corner points (14, 1)
(15,1) (14, 2) (15,2))
1 .csv of lat/long coordinates for points
Goal: a-
2010 Apr 01
3
Using GIS data in R
I have a simple problem: I need to load a ERSI shapefile 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
2005 Mar 05
2
maptools, filename writing shapefiles
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
2005 Jul 13
5
maps drawing
Hello,
is there a package in R that would allow map drawing:
coastlines, country/state boundaries, maybe
topography,
rivers etc?
Thanks for any guidance,
Mark
2003 Jun 30
4
french map
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
2017 Jun 01
3
[spatstat] Convert shapefile to pixel image
Dear all,
I am currently working with the spatstat package, using windows and pixel images.
First:
My aim is to transform a shapefile (see attached) into a pixel image.
My idea is to start transforming the shapefile into a Spatial Polygon file:
x <- readShapeSpatial("200001441.shp")
y <- as(x, "SpatialPolygons")
z <- as.owin(y)
Given z, I want to identify each
2007 Apr 04
6
transition matrices
I am working with transition matrices of sequences of animal
behaviours. What I would like to do is parse the original matrices,
adjusting row/column order so that the matrix has its main values in blocks
surrounding the diagonal. This would cause behaviours involved in
functional groupings (e.g. grooming, resting, foraging etc) to appear as
blocks.
This can be done manually by applying
2012 Apr 01
4
map and shapefile help
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.
--
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2008 Mar 11
2
Error opening SHP file (maptools)
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
2011 Jan 01
2
Problem with uploading library
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
2017 Jun 01
0
[spatstat] Convert shapefile to pixel image
On 02/06/17 01:17, Lluis.Hurtado at uv.es wrote:
> Dear all,
>
> I am currently working with the spatstat package, using windows and pixel images.
>
> First:
>
> My aim is to transform a shapefile (see attached) into a pixel image.
>
> My idea is to start transforming the shapefile into a Spatial Polygon file:
>
> x <-
2007 Dec 09
1
spatstat questions
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2006 Nov 30
2
*** caught segfault *** error
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"
2005 Feb 09
1
FW: Drawing maps of UK
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
2003 Jun 09
2
ESRI shapefiles and EMME/2 packages
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
2004 Sep 22
2
dot density maps
Dear All,
In the moment i'm using the map and maptools package to read shapefiles
and display the maps.
I'm looking for the possibility to draw points (randomly positioned or
positioned according to a grid) into the polygons instead of filling the
polygons with colors.
For example:
a map (shapefile) with 10 countries, 15 points in the polygon of country
A, 20 points in the