Displaying 20 results from an estimated 600 matches similar to: "package: maps and spatstat question"
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 <-
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
2013 Sep 19
3
How do I ensure that the polygon in spatstat::owin(poly=<polygon>) does not have “negative area”
I am a new user of the R spatstat package and am having problems creating a
polygonal observation window with owin(). Code follows:
library("maps")
library ("sp")`
library("spatstat")
mass.map <- map("state", "massachusetts:main", fill=T) # This returns
a data frame includding x and y components that form a polygon of
massachusetts mainland`
2009 Oct 19
1
Spatstat: xy binary data into mask type to use in owin(mask=)
Dear users,
I am trying to export polygons from Arcmap into Spatstat to run some
simulations using functions available in Spatstat package.
One particular area to be exported is formed by a number of polygons
defining the external boundaries of the area (as a groups of islands) and a
number of polygons inside the previous ones, as ?holes? not to be
considered as part of the area.
I have
2011 Sep 23
1
spatstat => owin + image
Dear Community
I am at my wits end and seek advice.
My wish is to plot coordinates (x,y in WGS84_UMTS for the ones interested)
of sampling points.
This I can do by the standard spatstat prodcedure via owin. I then try to
add an image, which is
a map/satellite photo in the background.
Firstly
Problem: With the current code, I can not get the edges of the image to
match the boarders of the plot
2012 Mar 16
1
Spatstat - coordinates in observation window
Dear R users,
I wish to run spatial point pattern analysis (e.g. pair correlation function, mark correlation function) for which I need to create an observation window (window=owin) from which the spatial analysis is generated. The command I used to create this observation window as follows:
X1<- ppp(x, y, window=owin(c(80.58,144.96),c(101.06,165.13)),
2013 Mar 21
3
spatstat error
Good day
Im working with some coordinates, and want to create a PPP object, I found
that error:
> Datos=read.table("puntos_texto.txt",dec=".",sep="\t",header=T)
> summary(Datos)
id y x
Min. : 1.0 Min. :1013581 Min. :1177842
1st Qu.: 821.2 1st Qu.:1014442 1st Qu.:1179658
Median
2005 Sep 08
1
Using R map data to determine associated state for a coordinate?
Hi!
I have no idea if this is maybe an easy task utilizing
R since I read there is
geographical map data in some package:
I have a huge number of geographical points with their
coordinates in Germany.
Now I want to determine for each point in which
"Bundesland" = state it is located.
Can anybody tell me if this is doable relatively easy
in R and if so give me
some hints or links
2007 Apr 14
2
Samba -> WinXP: slow transfers, partial solution
Hello All,
I'm running Samba 3.0.24 as PDC and file server on Gentoo Linux,
AMD64, 2.6.19 kernel, 100MBit/s network, and experience quite slow
file transfers from Samba to WinXP SP2 clients: the speed is varying,
but is about 1-2Mb/s at best.
I spent quite some time investigating the issue, here are the
intermediate results:
1) This happens only when transferring _from_ _Samba_ to
2012 Apr 16
2
Creating a point pattern with spatstat
I have presence/absence data in the following format:
1 2 3 4 5 6 7 8 9 10 11 12
1 1 1 1 1 1 1 1 1 1 1 1 0
2 1 1 1 1 0 1 1 1 1 1 1 0
3 1 1 1 1 1 1 1 1 1 1 0 1
4 1 1 1 1 1 0 1 1 1 1 0 1
5 1 1 1 1 1 1 1 0 0 1 1 1
6 1 1 1 0 0 1 0 0 1 1 1 1
7 1 1 1 1 0 1 1 0 0 0 1 1
8 1 1 1 1 1 1 1 0 0 0 1 0
9 1 1 1 1 0 0 1 0 0 0 1 1
10 1 1 1 1 1 1 1 0 0 0 0 1
11 1 1 1 1 1 1 1 1 1 0 0 1
12 1 1 1 1 1 0 0 0 1 1 1 1
2012 Dec 07
1
Fwd: Simulation of spatial Log-Gaussian Cox process in Spatstat
Hello,
I have fitted a Log-Gaussian Cox Process on my data but when I try to
use "simulate.kppm" of the spatstat package I get this error:
Error in rLGCP(model = model, mu = mu, param = param, ..., win = win) :
The spatial domain of the pixel image ?mu? does not cover the
simulation window ?win?
I've used covariates as im, changed the npixel value of the spatstat
options to
2017 Jun 01
0
[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
2004 May 29
1
Rhelp: Need help interpreting plots in spatstat
Hello everybody--
I have been playing with my data in spatstat, and what I'd like to
present is a basic exploratory spatial analysis. I have used the
following code, using a ppp.object called tsdspoints. The code
develops the simulations and the envelopes I want, but I don't
understand my first plot here, the [tsds.ghat.short$r,
tsds.ghat.short$raw]...I cobbled together this code
2010 May 06
1
extracting coordinates from SpatialPolygonsDataFrame using slot functions
In converting some older code:
## builds an OWIN to generate a set of points on a grid within the OWIN object:
bdry <- read.shape( "../../data/boundary.shp" )
outline.verts <- bdry$Shapes[[2]]$verts[1:bdry$Shapes[[2]]$Pstart[2],]
outline.order <- nrow( outline.verts ) : 2
bdry.poly <- vector( 2, mode="list" )
bdry.poly[[1]] <- list(
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
2011 Mar 31
0
Help: creating owin{spatstat} objects from GIS data
Dear R list,
I'm trying to create an object of class "owin" (observation window) in the
package spatstat from GIS mapping data. Here's an example of my problem.
Everything
goes well until the last line of code. I get the error message shown at the
bottom:
library(spatstat)
library(sp)
library(maptools)
con <- url("http://gadm.org/data/rda/CHE_adm1.RData")
class(con)
2013 Jan 29
1
points rejected as lying outside the specified window
Hello,
I am using the following code to create ppp files from csv data and map shape files, but I am getting some errors which I have been unable to fix by searching them online:
library(spatstat)
library(maps)
library(maptools)
NYC2<-readShapePoly("nybb.shp") # this is a map of the NYC boroughs without waterways and no census tract divisions (but it does include lines separating
2012 Nov 05
1
Problem with polygon vertices
I am building a mask with
area.urb.sp.W <- as(area.urb.sp, "owin")
and got the message
Erro em owin(poly = opls) :
Polygon data contain duplicated vertices, self-intersection and overlaps
between polygons
how can I solve this problem in R?
many thanks
IVAN
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2014 Nov 21
1
New Compiz Maintainer
For any that are interested, I am assuming position as maintainer of
upstream 0.8 stable branches. More details here:
http://blog.northfield.ws/wordpress/
Thank You,
Scott Moreau
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2011 Dec 02
1
Willkommen bei der "R-help" Mailingliste
Hello everbody,
I am new to this mailing list and hope to find some help.
I'm trying to get into the spatstat package and encountered two problems. First a graphical one:
There is an example dataset called "finpines" which has several marks (http://www.oga-lab.net/RGM2/func.php?rd_id=spatstat:finpines)
When I pass the given code from the website to R
data(finpines)