Displaying 20 results from an estimated 1000 matches similar to: "Spatstat users."
2007 Apr 27
1
Quadratcount() plotting in R spatstat
Hello,
I am trying to plot a quadratcount object over a ppp object in the spatstat
package. I ultimately want to get something like this
http://bg9.imslab.co.jp/Rhelp/R-2.4.0/src/library/spatstat/man/images/big_quadratcount_001.png
http://bg9.imslab.co.jp/Rhelp/R-2.4.0/src/library/spatstat/man/images/big_quadratcount_001.png
See
2005 Sep 01
2
SpatStat Kest - Error Message help
Hi I'm working with the function Kest in the package SpatStat (under LINUX
with R 2.1.0). In order to evaluate the statistical significance of my
point pattern I'm doing 999 Montecarlo replications. The script that use
the Kest function runs OK for most of the different point patterns that I
have but for a particular point pattern, which have only 17 points, it
runs until the 34th
2008 Oct 22
1
Spatstat help - quadratcount query
Hi all,
I am using quadratcount in spatstat to divide a window containing a
point pattern into a grid of quadrats containing the intensity of points
in each quadrat. My data is in UTM co-ordinates. My window is defined
as follows:
>p15<-ppp(x,y,window=owin(c(341710,342100),c(3126465,3126780)),marks=NUL
L, checks=TRUE)
Giving me a distance of 390m in the 'x' direction and 315m in
2005 Mar 05
1
spatstat on Win98 (PR#7715)
Full_Name: Georg Roth
Version: R.2.0.1.for Windows
OS: Win98
Submission from: (NULL) (134.95.43.165)
Using libraries "spatstat" and "sm" on R.2.0.1. under Windows 98
bug 1)
the libraries "spatstat" and "sm" are not properly identified by the
"library()" command on R.2.0.1. (R for Windows98). the libraryname is shown in
upper case
2009 May 10
1
Spatstat
Hi all,
I am trying to install Spatstat on OpenSUSE 11.1.
install.packages("spatstat", dependencies = TRUE)
fails on the basis of various compiler packages (full message below).
I have gcc version 4.3.2, which should include gfortran and g++ - so I'm not
sure what to do!
Richard
* Installing *source* package ?deldir? ...
** libs
gfortran
2010 Jan 18
1
how to install spatstat
Hi,
I tried to install spatstat using:
install.packages("spatstat", dependencies = TRUE, lib =
"./R/i486-pc-linux-gnu-library/2.8")
but got the following msg:
--- Please select a CRAN mirror for use in this session ---
<here i selected one mirror, and tried several mirrors)
Loading Tcl/Tk interface ... done
Warning message:
In install.packages("spatstat",
2011 Mar 19
1
Undefined symbol "Rf_pythag" while loading spatstat
Today I installed the newest R develepment branch
R version 2.14.0 Under development (unstable) (2011-03-18 r54866)
on FreeBSD 9.0-CURRENT (amd64). All seems fine so far.
After that I updated my R packages with option 'checkBuilt=TRUE'. There
are four packages (spatstat, pscl, adehabitatLT, adehabitatHR) which
gives an error like this:
Error in dyn.load(file, DLLpath = DLLpath, ...) :
2003 Apr 30
1
mpl in spatstat
Hello all,
I'm attempting to conduct spatial analysis of trees within a plot. I want to see if the trees are spatially correlated to soil characteristics, say pH, or moisture content. I think one way to do it is with mpl, however, my soil characteristics were not taken at exactly the same locations as my trees and further, the vectors aren't the same length. I'm getting the
2012 May 09
1
Paquete Spatstat
Hola a toda la comunidad R, el siguiente problema tengo para hacer
funcionar el paquete Spatstat.
Tengo instalado R version 2.15.0, y Ubuntu 12.04 los cuales ya lo
actualice. El paquete (spatstat) esta instalado pero puntualmente es
problema es asi:
/
> library("spatstat")
Loading required package: mgcv
Error : .onLoad failed in loadNamespace() for ''Matrix'',
2007 Jun 06
1
Metropolis-Hastings Markov Chain Monte Carlo in Spatstat
I'm testing some different formulations of pairwise interaction point processes
in Spatstat (version 1.11-6) using R 2.5.0 on a Windows platform and I wish to
simulate them using the Metropolis-Hastings algorithm implemented with Spatstat.
Spatstat utilizes Fortran77 code with the preprocessor RatFor to do the
Metropolis-Hastings MCMC, but the Makefile is more complicated than any I have
2005 Jan 27
7
getting package version inside .First.lib
Greetings -
Is it possible, inside .First.lib,
to find out the version number of the package that is being loaded?
If only one version of the package has been installed,
we could scan the DESCRIPTION file, something like
.First.lib <- function(lib, pkg) {
library.dynam("spatstat", pkg, lib)
dfile <- system.file("DESCRIPTION", package="spatstat")
2005 Dec 09
1
O-ring statistic
Rainer M Krug writes:
> Thorsten Wiegand used in his paper Wiegand T., and K. A. Moloney 2004.
> Rings, circles and null-models for point pattern analysis in ecology.
> Oikos 104: 209-229 a statistic he called O-Ring statistic which is
> similar to Ripley's K, only that it uses rings instead of circles.
>
> http://www.oesa.ufz.de/towi/towi_programita.html#ring
2009 Dec 08
1
Quadratcount problem in spatstat
Hi,
I know there are older threads discussing the quadratcount function in
spatstat. Unfortunately, I could not find a solution to my problem there.
I'm analyzing a point pattern in an irregular polygonal window. Both the
window (an entire country) and the points are projected using WGS84.
When I do quadratcount with only one quadrat for the entire country it
holds all my 154 points:
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
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
2006 Aug 24
0
spatstat 1.9-5
A new version 1.9-5 of the package `spatstat'
has been uploaded to CRAN.
What it is:
----------
spatstat is a package for analysing spatial data, mainly Spatial Point
Patterns.
What's in it:
------------
Functions for exploratory data analysis, model-fitting, simulation,
spatial sampling, model diagnostics, and formal inference. Data types
include point patterns, line segment patterns,
2006 Aug 24
0
spatstat 1.9-5
A new version 1.9-5 of the package `spatstat'
has been uploaded to CRAN.
What it is:
----------
spatstat is a package for analysing spatial data, mainly Spatial Point
Patterns.
What's in it:
------------
Functions for exploratory data analysis, model-fitting, simulation,
spatial sampling, model diagnostics, and formal inference. Data types
include point patterns, line segment patterns,
2007 Jan 15
0
spatstat 1.11-0
spatstat 1.11-0
Version 1.11-0 of package 'spatstat' is now available.
Spatstat is a package for the analysis of spatial data,
mostly point pattern data. See <www.spatstat.org>
Important changes in version 1.11-0:
New format for ppm objects (objects in old format are still handled).
More stringent checking of function arguments.
Improved handling of pixellation effects.
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
2010 Jun 05
1
spatstat sub-selection
Fellow Users,
In Spatstat, if you have a ppp object with, say 100 points, how do you
create another ppp containing a random selection, N, of the original?
You can tell the function 'rthin' to make a sub-selection of points, i.e.
"every point is removed with probability 0.5" but you CAN'T set N exactly...
I'm sure this should be easy...
Ta!
Tom
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