Displaying 20 results from an estimated 1000 matches similar to: "(no subject)"
2011 Feb 21
2
(no subject)
What is plot.new? How can I fix this data or add plot.new so it works?
> library(maps)
> library(splancs)
> area = 6*4
> lambda = 1.5
> N = rpois(1,lambda*area)
> u = runif(N,-2,4)
> v = runif(N,0,4)
> plot(u,v,asp=1)
> h = chull(u,v)
> h = c(h,h[1])
> plot(u[h],v[h],"1",asp=1)
Error in plot.xy(xy, type, ...) : invalid plot type '1'
>
2003 Dec 07
2
par(las = 1) not possible in polymap(), library(splancs)?
Dear all,
I want my PhD thesis which I hand in tomorrow to look even nicer:
Does polymap in the splancs library not allow horizontal plotting of
y-labels? I have tried
polymap(studyarea, xlab = "x (m)", ylab = "y (m)", las = 1)
but it doesn't change the labels?
Mayby some function in library(spatstat) support las?
Thanks!
Sincerely,
Tord
2005 Sep 16
1
Question:manipulating spatial data using combination of Maptools and Splancs
Hi,
I have a problem that concerns combination of the package Maptools and
Splancs
I have 2 shapefiles that i want to manipulate (one of type point and one
polygon).I import them in R using Maptools but then i can't estimate a
quartic Kernel using Splancs. The package doesn't recognize the shapes
(invalid points and poly argument).I don't know if this is an easy task but
i have
2012 Aug 13
1
Fine Tuning Country Map
Dear All,
Please see the short script at the end of the email, which I assembled
looking for bits and pieces on the web.
It essentially does what I need: it plots several countries as a
color-coded map.
I just would like to fine-tune a bit the final image, in particular
(1) Select my own colors for "painting" the countries (i.e. associate
manually a color to every level)
(2) Be
2009 Mar 30
1
Warning messages in Splancs package :: no non-missing arguments to min; returning Inf
Hi,
I would need some help with the splans package in R.
I am using a Shapefile (downloadable at)
http://rapidshare.com/files/215206891/Redlands_Crime.zip
and the following execution code
setwd("C:\\Documents and
Settings\\Dejan\\Desktop\\GIS\\assignment6\\DataSet_Redlands_Crime\\Redlands_Crime")
library(foreign)
library(splancs)
auto_xy<-read.dbf("Auto_theft_98.dbf")
2004 Jun 11
1
space-time k function problem
I am intersted in time-space clustering of local industry.
I made the point file, polygons and time table then run 'stkhat' function in Splancs,
but it generates only time k function. I noticed that it has only one ks value. ...
Can anybody help me?.
thanks in advance.
countiespt <- read.table('d:/dissertation/dailynew/jun10/countiespt_ok.txt', sep=",")
2013 Nov 27
0
GADM Data Download
Dear All,
Please consider the snippet at the end of the email.
I often download some maps (in the R format) from
http://www.gadm.org/
However, when I run (typically more than once) a variation of the script
below (based on http://bit.ly/1b3W0Aa ),
I often get
Error in load(url(paste("http://gadm.org/data/rda/", fileName, "_adm", :
cannot open the connection
In
2001 Jun 02
2
inout() in splancs working properly?
I have a problem with function 'inout()' in package 'splancs' on CRAN-R
Version 1.2.3 under FreeBSD4.3-STABLE.
The following script produces and draws points and a polygon-surrounded
area. Repeating the same script many times shows, that points on the
polygon-line often, but not always, are outside of the polygon-area.
library(splancs)
# dataset with polygon (convex
2008 Aug 12
1
Geodata object border
Sorry, this is probably quite an easy question, but I'm new to R and couldn't
find the answer anywhere.
I'm using geoR and geoRglm, but can't figure out how to get a border in my
geodata object. Does this need to be defined when I'm importing my data, or
afterwards, and how do I go about doing this?
Thanks
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2001 Oct 16
4
Assignment of structures on a given environment
Hi,
In order to avoid deep copies by passing large arguments to functions or
returning values, I'm trying to do the assignment of variables in a
given environment. The problem is when I try to assign a structure: a
list for example.
If I have:
ind <- c("a","b")
my idea is doing something like
l <- alist()
l[ind] <- as.list(c(20,40))
in a given
2003 Apr 28
2
sum(..., na.rm=TRUE) oddity
Hi all,
I get two different results when using sum() and the switch na.rm. The
result is correct when na.rm=FALSE.
Linux Redhat 7.3, R version 1.6.1.
I've had no luck searching the mail archives, so I was hoping somebody
could explain/check this one for me. I will need to apply the function
to missing data, simple as it is.
Code:
x<-matrix(runif(20,0,5)%/%1,4,5) # random matrix
2005 Dec 19
1
How to draw partial grid in plot for spatial-binomial experiment?
DeaR comRades:
I have a 2D spatial binomial process as shown in the data and code below.
I am plotting the number of trials and the number of successes in the spatial
binomial experiments and would like to draw the spatial cells were the trials
and successes were counted, i.e. a partial grid in the plot only for those
cells where there is a number. The cells are 2x2 km cells. The count of
Trials
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 Jun 04
1
Plotting with Rgraphviz
Hi All,
After a lengthy battle just to get the package installed, I am not able to
actually use Rgraphviz to generate any plots. I tried just using the sample
code in the documentation
(http://www2.warwick.ac.uk/fac/sci/moac/people/students/peter_cock/r/rgraphviz/)
and I get the following:
*> > library(Rgraphviz)
> test.matrix<-matrix(rep(c(0,1,0,0), 9), ncol=6, nrow=6)
>
2006 Apr 26
1
Polygon-like interactive selection of plotted points
[Please CC me for all replies, since I am not currently subscribed to
the list.]
Hi all,
I have the following problem/question: Imagine you have a two-
dimensional plot, and you want to select a number of points, around
which you could draw a polygon. The points of the polygon are defined
by clicking in the graphics window (locator()/identify()), all points
inside the polygon are
2011 Jan 20
1
Generating time progressing line for Google Earth
Dear,
I am trying to visualise a time-progressing line (it's supposed to
represent spread patterns) using brew package and Google Earth.
The idea is to have a function which takes start and end point
geographic coordinates, as well as number of intervals to chop the path
up, and returns the collection of points segmenting this line.
Unfortunately my calculations fail for large distances,
2006 Jan 21
1
Bug in xy.coords() or documentation error?
Hi,
I noticed the following problem with xy.coords() in R 2.2.1-patched
(version info at the foot of this email) and R 2.3.0 unstable
(subversion no: r37123):
> xy.coords(x = matrix(1:20, ncol = 2))
Error in xy.coords(x = matrix(1:20, ncol = 2)) :
argument "y" is missing, with no default
> xy.coords(x = matrix(1:20, ncol = 2), y = NULL)
$x
[1] 1 2 3 4 5 6 7 8 9
2001 Feb 17
4
Comments on R-1.2.1 builds (PR#851)
The R-1.2.1 builds have gone fairly smoothly on most of my UNIX
architectures, but there were many warnings reported by the picky SGI
compiler that could be eliminated in future releases.
Generally, I have found the SGI compilers very helpful in ferreting
out portability problems, unused and/or obsolete variables, unexpected
datatype coercions, etc., and they compile faster than any other
2013 Apr 26
1
[newbie] how to find and combine geographic maps with particular features?
SUMMARY:
Specific problem: I'm regridding biomass-burning emissions from a
global/unprojected inventory to a regional projection (LCC over North
America). I need to have boundaries for Canada, Mexico, and US
(including US states), but also Caribbean and Atlantic nations
(notably the Bahamas). I would also like to add Canadian provinces and
Mexican states. How to put these together?
General
2011 Dec 21
1
Gps fraction of degrees function
Dear all, I have the following written example
> coords <- "51°30'48.58\"N"
>
> as.integer(strsplit(coords, "°")[[1]][1])
[1] 51
> as.integer(strsplit(strsplit(coords, "°")[[1]][2], "'")[[1]][1])
[1] 30
> as.numeric(strsplit(strsplit(strsplit(coords, "°")[[1]][2], "'")[[1]][2],