Catmogs are online at: http://qmrg.org.uk/catmog/ (the series published by
GeoBooks). Lots of useful stuff, a bit "legacy", but often that is what is
needed. There are few join count references since the mid 1980's, so some time
ago, quite undeservedly, I think, they are useful for categorical
Maybe something like this:
http://www.ars.usda.gov/sp2UserFiles/ad_hoc/1200SpatialWorkshop/01VinyardOverview.pdf
- Original Message -
From: milton ruser
Date: Tuesday, August 25, 2009 7:50 pm
Subject: Re: [R-sig-Geo] Kriging
> Hi Kabeli,
>
> I never saw Brian Vinyard slides 40! :
Dear R users
Greetings from a novice. I would be grateful if you can help me complete the
plot of a matern correlation function Matern Correlation function with
kappa =1,1.5,2,2.5,3 , phi = 1 The problem is that i can manage to get the
result when t> 0 using the following code:
curve(ma
Hi Kabeli,
I never saw Brian Vinyard slides 40! :-)
It is accessible on a internet site?
bests
milton
On Tue, Aug 25, 2009 at 6:56 PM, KABELI MEFANE wrote:
> Hi all
>
> Please help and correct me, to predict Z(S0) at (0.5,0.5) given Z(S1) = 3
> at (0,0), Z(S2) = 5 at(0,1), Z(S3) = 6(1,0) and
Hi all
Please help and correct me, to predict Z(S0) at (0.5,0.5) given Z(S1) = 3 at
(0,0), Z(S2) = 5 at(0,1), Z(S3) = 6(1,0) and Z(S4) = 4(1,1). Let
γ (h)=h^2 h<1
= 1 h>=1 using geo.
I did this: coords<-matrix(c(0,0,1,1,0,1,0,1), nrow=4, ncol=2)
> data<-c(3,5,6,4)
> coordata<-dat
Ogbos,
You could have a look at pointsToRaster in the raster package to count
the number of points (events?) per raster cell.
to install raster:
install.packages("raster", repos="http://R-Forge.R-project.org";)
Robert
On Tue, Aug 25, 2009 at 10:56 AM, ogbos okike wrote:
> Hello to everybody,
>
Hello to everybody,
I have a huge geographic data labeled latitude and longitude (global). I am
attempting to use Generic mapping tools to plot the distribution of the
events. I wish to obtain number of events per region on the map. Using
factor function, I have summed up the number of events on
Ok it seems like the limits match. Therefore values inside this range are
somehow being deleted. Is there any way I can determine which points are
being deleted?
On Tue, Aug 25, 2009 at 4:21 AM, milton ruser wrote:
> Hi there,
>
> (1) try make a summary of X and Y and see if the minimum/maximum
Many thanks all for your tips and suggestions,
Yes, I'm using the standard windows binary and unfortunately am rather clumsy
when comes to PCs so will refrain from compiling / rebuilding myself . The
spatial functionality developed in R is helping me a great deal and at this
stage the options
Hello,
(I was trying to send this last night, so it's been covered by Barry
and Roger, but I'm now sending it as a test of this email address
subscription).
Unfortunately you won't be able to read NetCDF with the CRAN version
of Windows rgdal. If you build the package yourself against FWTools,
or
I've just been hacking image.SpatialGridDataFrame to support
transparency, either via specifying an alpha band or a constant value
of alpha:
image(foo,red=1,green=2,blue=3,alpha="band4",add=TRUE)
image(foo,red=1,green=2,blue=3,alpha=0.5,add=TRUE)
I don't think what I've done works properly with N
Hi there,
(1) try make a summary of X and Y and see if the minimum/maximum limits are
included on your minimum/maximum limit of your grid;
(2) try to see a frequency table of X/Y combination, to have sure if some of
your X/Y combinations have frequencies>1.
good luck,
milton
On Mon, Aug 24, 200
Dear list
I have been trying to convert input data from either images or
spatialgriddataframes to kasc for enfa modelling
However I keep getting a strange error that the cell size is not the
same in the different dimensions - see below. Is there anyone that
can enlighten because I am rea
I think Darren is using the standard Windows binary rgdal package, which does
not include any GDAL drivers that depend on external DLLs, so does not include
netCDF. Unless he wants to rebuild against the FWTools or OSGEO4W DLLs (as
described in the file readme.WINDOWS in the package), another op
Dear Michael,
this one comes to my mind:
@BOOK{Goodchild1986,
title = {Spatial Autocorrelation},
publisher = {Geo Books, Norwich},
year = {1986},
author = {Goodchild, M},
timestamp = {2007.05.14}
}
hope it helps
marco
> --
>
> Message: 10
> Date: Tue, 25
Dear all,
I'm using the joincount.test function in the spdep package to test for the
presence of spatial autocorrelation in a nominal variable.
Given that I'm doing this analysis for a paper I'm currently working on, I
would need a reference that explains the logic behind the join-count model.
T
16 matches
Mail list logo
