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Helleveien
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N
much
quicker but Great Circle distances are required.
Thanks
Gary Watmough
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an identify= argument, but this is not the same as select.spatial(),
which lets the user select points spatially by drawing a polygon around the
ones to be selected.
Roger Bivand
cls59 wrote:
Julius Tesoro wrote:
Hi everyone. I posted this on R-sig-geo but got no response.
Can
Perhaps asking on R-sig-geo might help (as well as reading the function help
files, scripts found lying around somewhere may be stale ...)?
If readShapePoly() (deprecated - use readShapeSpatial() instead) says that
the data are not polygons, then they are not. If you want to fill
administrative
the discrepancy without success so far. I
really hope that the case I hit is an exception - displaying the
boundaries on GE should help clear things up for users.
Roger
Hadley
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Should anyone see problems following this change, please contact me
directly with a reproducible example.
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of the
text in that file or its successor is unpalatable.
Roger
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nearest CRAN mirror to load image tiles.
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spatial weights.
Roger Bivand
Thank you very much for your answer.
Kind regards,
Elke Moons
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Instituut voor Mobiliteit (IMOB)
Universiteit Hasselt
Wetenschapspark 5, bus 6
3590
Takatsugu Kobayashi tkobayas at indiana.edu writes:
try
tmp- slot(ex_1.7.selected, 'polygons')
sub.tmp - slot(tmp[[1]],'Polygons')
[EMAIL PROTECTED]
will get you there.
taka
Jarek Jasiewicz wrote:
Milton Cezar Ribeiro wrote:
Dear all,
grd - GridTopology(c(1,1),
hadley wickham h.wickham at gmail.com writes:
Also it is staggering that there are over 1200 packages for R i was
suspecting close to 1000 .
And the site is a couple of weeks out of date, so there are probably even
more.
The real answer was Task Views on CRAN (most of the OQs
Rainer M Krug r.m.krug at gmail.com writes:
Hi
I am running analysis with Kcross from the package spatstat and I am getting
a message that R can not allocate enough memory for a vector of 900MB.
R seems to be running towards the 2GB limit per process.
The dataset is not to big (ca
spTransform() methods in the rgdal package.
Perhaps the R-sig-geo list would be more suited to your question?
Roger Bivand
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with a binomial family there is for
a (0,1) response, rather than a two-column matrix.
You could try gee or geoRglm -- neither trivially easy, I think ...
The same paper includes a GEE adaptation, but for a specific spatial
configuration rather than a general one.
Roger Bivand
Ben
Aleksandr Andreev aleksandr.andreev at duke.edu writes:
Greetings!
I am trying plot some data on a map in R. Here's the scenario.
I have a variable called probworkinghealthy which contains a predicted
probability of employment for every individual in my sample (about
100,000
Aleksandr Andreev aleksandr.andreev at duke.edu writes:
Roger Bivand Roger.Bivand at nhh.no writes:
Merge using:
FS1 - spCbind(FS, agg2)
This call fails, because:
Error in spCbind(FS, agg2) : different numbers of rows
This was exactly why I emphasised care. One way to try to do
Steve Schachterle steve.schachterle at gmail.com writes:
My question is in regard to the spdep and GeoDa packages. Do you know how
to extract a neighborhood/adjacency matrix from R? I need a matrix that has
all the neighborhoods on the X and Y axis, and then a r=1 when the
neighborhoods
sees
LD_LIBRARY_PATH. This is a very detailed question, more suited to GRASS or
GDAL lists, or R-sig-geo. You'll see when you have the solution because the
GDAL utilities will work at the shell, for example gdalinfo --formats - I
think that it doesn't at the moment.
Roger Bivand
epoizot wrote
to the other. Note that for obvious
reasons a rectangle on one side will only rarely be a rectangle on the
other, so I've just taken a bounding box.
Roger Bivand
stephen sefick wrote:
I am trying to set up a Grass project and need to set up the region so
that I can view the map. I can look
for the total
length of points. I suggest that you try the latest version of sp from the
CVS repository.
Roger Bivand
PS. The traffic that you mention about sampling on lines was on the
R-sig-geo list, not this list, so a post there might have been a better
idea.
PPS. Always state package version numbers
are 1, 2, 3
image(myTile, red=1, green=2, blue=3)
On the other hand, the colours in these images are arbitrary manipulations
of the sensors, and have already been warped and resampled, so decimating
the colour representation isn't inappropriate, and 256 is not a small
number.
Roger Bivand
PS
, and leads to threads being left
dangling if solutions do not propagate to all lists where threads were
initiated.
Roger Bivand
Steve Hong wrote:
Dear List,
I have some problem with my simulation code. Here is output from R:
sim.sp - function(data,CM,n,N)
+ {
+ C - matrix(rep(NA,N),ncol=1
I think that Daniel is correct, and that you are mistaking the console
representation from the internal one - try ?print and look at the digits=
option. In general, note that get.Pcent() is not currently used, and
coordinates() of a SpatialPolygonsDataFrame object read in using, for
example,
Juan Manuel Barreneche jumanbar at gmail.com writes:
just to mention that the loop was already running for about 20 hours...
Juan
On Tue, Aug 19, 2008 at 6:31 PM, Juan Manuel Barreneche
jumanbar at gmail.comwrote:
Dear users,
I got this problem and i don't have a clue of what it
Freeman, Robert rfreeman at emcc.edu writes:
I am wondering if there is a way to do a spatial error probit/logit
model in R? I can't seem to find it in any of
the packages. I can do it in MATLAB with Gibbs sampling, but would
like to confirm the results. Ideally I
would like to use this
Steve Murray smurray444 at hotmail.com writes:
Thanks Duncan - a couple of extra points... I should have perhaps pointed
out that the data are on a *regular*
'box' grid (with each value currently spaced at 1 degree intervals). Also,
I'm looking for something
fairly simple, like a
Rodrigo Aluizio r.aluizio at gmail.com writes:
Thanks for the elucidation James.
After reading the .pdf of proj4 and your answer, I believe I won't need
proj4 package.
Well, I still don't know all the kind of transformations we will need here.
I'm just getting prepared to future data
what you need.
Roger Bivand
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Bivand
Roger Bivand wrote:
Jason Gasper Jason.Gasper at noaa.gov writes:
Here is the WinBUGS code
Uwe Ligges wrote:
If you want that people help to translate *code*, you have to specify
it ...
Uwe Ligges
Please look at the nb2WB() function in the spdep
free geodata sources is generally much harder than plotting the maps.
Roger Bivand
Best,
Junjie
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, but
until we know what your actual needs are, it is hard to say. You could,
for example, be looking for some of the tests in the DCluster package,
but we cannot tell.
Roger Bivand
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Etienne Bellemare Racine etiennebr at gmail.com writes:
Hi,
I am working with airborne LiDAR data and R. Do you know of any package
or project designed to achieve that goal ? Largely, if you are using R
and .las files (or lidar data), I would like to hear about your work
flow.
Tudor Bodea gtg757i at mail.gatech.edu writes:
Creg:
Thank you so much for your leads. I will take a look at the package and let
you
know how it goes.
Greg's solution is more up-to-date, but you'll find that the pixmap package
has a function called addlogo - see ?addlogo-methods - which
Vanesa Maria Santos Sanchez vanesa.santossanchez at alum.uca.es writes:
Hello!
I want to plot a multitype point pattern called new in package
spatstat. When I write plot(new) in the graphic window I can see a
strech rectangle with a point inside, not the point pattern.If I
write
Alessandro alessandro.montaghi at unifi.it writes:
Hi All,
I have this question. I wish to create a kriging map with R but I haven't a
auxiliary map. I have only one txt file with X, Y and Z records.
When I use this code:
...
subground.ok - krige (Z~sqrt(X+Y), subground,
Biology
Faculty of Science
Natural Sciences Building
Private Bag X1
University of Stellenbosch
Matieland 7602
South Africa
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Liviu Andronic landronimirc at gmail.com writes:
Hello,
On Fri, Apr 4, 2008 at 8:09 PM, Martin Rittner kmr at thegeologician.net
wrote:
I don't know too much about R myself, but a little about ArcGIS:
Come on, please do use a little time to search! An RSiteSearch(Arc raster)
gets you
Haenlein.Michael Michael.Haenlein at whu.edu writes:
Dear all,
I would like to calculate a Moran's I statistic using the moran function in
the spdep package. The problem
I'm having deals with how to create the listw object.
My data stems from the area of social network analysis. I
Maria Jose Juan Jorda mjuanjorda at gmail.com writes:
Hello all
I am a newbie to R plotting maps. I am trying to plot over a world map a
layer of Biogeochemical provinces (BGCP) by A.R. Longhurst. Each ocean
region unfortunately are quite irregular in shape (not perfect squares). In
GIS
Melanie Murphy mamurphy at turbonet.com writes:
I was wondering if anyone has developed (or is developing) an
implementation for gravity models (spatial interaction) in R. I
conducted several searches on the CRAN website with no luck. Currently
I am estimating parameters via
Paulo Cardoso pecardoso at netcabo.pt writes:
Can we by any change perform in R something similar geoprocessing or, more
advanced, Spatial SQL over vectorial data?
Please visit the Spatial task view on your nearest CRAN mirror, which gives some
details of useful resources. Consider using the
attention, for example, to what formula handling does to a factor
(categorical variable) - it generates dummies automatically.
I hope this will let you get started.
Roger Bivand
Regards
Amarjit Singh Sethi
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https
Perhaps reading ?readRAST6 would help? It does say:
vname: A vector of GRASS 6.0 raster file names
so you could write:
Kar - readRAST6(c(Incis_Kar, DEM_Kar), plugin=FALSE)
and plot(Incis_Kar ~ DEM_Kar, data=Kar) should get you there - in spearfish:
sp - readRAST6(c(erosion1,
at:
http://casoilresource.lawr.ucdavis.edu/drupal/node/319
Hope this helps,
Roger
Kind regards
Miltinho
Brazil.
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?
Roger
Liviu
[1] http://cran.at.r-project.org/src/contrib/Views/
[2] http://cran.at.r-project.org/src/contrib/PACKAGES.html
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Economic
, rdata, newdata=SP, idp=2.0, nmax=4)
is.na(SP_rdata2$var1.pred) - !(1:625 %in% whre)
spplot(SP_rdata2, var1.pred, sp.layout=list(pts))
for example.
Roger
Thanks very much.
[[alternative HTML version deleted]]
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)
# write neighbours component of spatial weights list as GAL file
Roger Bivand
Thanks in advance for the help.
Bernardo.
University of Concepció.
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jgarcia at ija.csic.es writes:
Hello;
Please coud you advise me of a simple way to select points (x,y
coordinates) that fall within a polygon.
I've got a set of polygons, each one defined by an arbitrary number of
points, and several points inside each polygon.
I know this is simple with
), do
remember to include the verbatim output of sessionInfo() too.
Roger Bivand
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Roger Bivand Roger.Bivand at nhh.no writes:
pieterprovoost at gmail.com writes:
No, I get the same error message there...
Your original question was:
I'm having problems reading a shapefile with read.shape (maptools). I'm
absolutely sure my file is there, but I get no such file
? Is readOGR() in rgdal working, by the way?
Roger
On 28.01.2008 12:35 (UTC+1), Roger Bivand wrote:
pieterprovoost at gmail.com writes:
No, I get the same error message there...
Please do not needlesly delete the thread content. Your original question
was:
I'm having problems reading
but it seems sparse to me.
The R-sig-geo list is more focussed on this kind of question, as is pointed
out on the Spatial Task View on CRAN.
Hope this helps,
Roger Bivand
Any hints will be appreciated.
Thanks in advance,
Patrizio
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is a great help
for getting graphics to do what you want, but looking at ?x11 or ?windows,
or ?postscript or ?pdf for file output, will cover the basics.
Hope this helps,
Roger
Best
Patrizio
2009/4/7 Roger Bivand roger.biv...@nhh.no:
Patrizio Frederic frederic.patrizio at gmail.com writes
)
data(wrld_simpl)
plot(wrld_simpl[wrld_simpl$ISO2 %in% c(CN, TW),])
depending on your needs.
Roger Bivand
HTH
Ray Brownrigg
On Fri, 17 Apr 2009, Cuvelier Etienne wrote:
Hello,
I use the map package in conjunction with the mapdata package,
and I want to draw the map of China without
representation carefully, and seeing whether R is the best platform for you
for this task.
Roger Bivand
Thank you,
Isaac
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a result. Given that you've manipulated
the data a good deal, I wouldn't rely on the output standard errors for
inference, though.
Roger Bivand
Thanks a lot,
Alberto
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to use interp() in the akima
package for this, although there are lots of alternatives. There has just been
a thread on this on R-sig-geo, subject: interp.old and write.ascii.grid,
showing how also to export the interpolated values to a grid file.
Roger Bivand
Thanks for any suggestions
this, but it involves coding, though not coding from scratch.
Roger Bivand
Thank you very much,
Eduardo.
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this helps,
Roger
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of your data, used the GDAL bindings directly, or use
sp classes if the raster isn't huge.
Roger Bivand
Thanks
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the query point(s) as
a SpatialPoints object, and overlay it on the input object. The output is
a vector of indices, showing which Polygons object the points lie in, or NA
if they do not.
Roger Bivand
PS. These kinds of questions typically get more focussed response on the
R-sig-geo list
that this is
the case, because other points might be validly inserted as label points. The
default constructor uses the centroid of the largest non-hole ring in the
Polygons object.
Roger Bivand
Thank you for your help.
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variable,
so analyse each of your columns in turn. You have a weights matrix, but
geary.test() needs a listw object, so use mat2listw() to construct it.
RSiteSearch() on Geary test takes you directly to the function you need, but
for listw matrix the hits are a bit more diffuse.
Roger Bivand
mirror are you using?
Which file are you claiming to have downloaded?
Should you have posted on the R-sig-geo and/or R-sig-Debian lists - this
is a specialised question?
Roger Bivand
Thybério Luna Freire wrote:
Hi,
i'm trying to install the packages rgdal and spgrass6 by
install.packages
will result in copies.
See several threads on R-sig-geo on handling large data sets, including one at:
https://stat.ethz.ch/pipermail/r-sig-geo/2008-November/004486.html
Also visit the raster package on R-Forge, which may offer a packaged solution to
this.
Roger Bivand
I am running linux 64bit
$geoR_pred - kc$predict
writeRAST6(SPDF_utm[geoR_pred], geoR_pred)
or similar (untried).
Note that either of the statgrass or R-sig-geo lists are more relevant
than this one.
Roger Bivand
Help me, please!
Thybério Luna - Brazil
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(or moving average, but not SAR and SMA at the same time), see
spautolm() in spdep. Note that with corSpatial(), you can fit a selection of
relevant mixed effects models using nlme and similar packages - is this what
you are looking for?
Roger Bivand
Thanks,
Sincerely,
Erin
, that is flattened) are supported in sp/rgdal.
Please consider following up on R-sig-geo; there are possibly more eyes with
relevant experience there.
If the OpenGIS strings could rather be treated as GML, OGR has a driver for that
too.
Roger Bivand
Jeff
if the spatial autocorrelation is expressed through a
spatial weights matrix rather than as a function of distance.
Hope this helps,
Roger Bivand.
PS. RSiteSearch on autologistic does find:
http://finzi.psych.upenn.edu/R/Rhelp02a/archive/147538.html
which is a posting by Elias Krainski on R-sig-geo
problems.
Roger Bivand
charlotte.bell wrote:
Hi,
I have spatially autocorrelated data (with a binary response variable and
continuous predictor variables). I believe I need to do an autologistic
model, does anyone know a method for doing this in R?
Many thanks
C Bell
on your problem, possibly
more than the authority you cite, including a link to the R-sig-geo list.
Roger Bivand
many thanks in advance!!
Barbara
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PLEASE do read
this is
a simple example of a real problem.
Roger Bivand
I'm using windows Vista and R 2.8.1
Thanks,
Phil Taylor
ptaylor at resalliance.org
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PLEASE do read
* boundaries that
suit your counties - which are not presently well-defined because of
boundary and administrative changes. The GISCO shapefile is in geographical
coordinates, so you'll be able to overplot points by longitude and latitude.
Hope this helps,
Roger Bivand
Raoul wrote:
Hi,
Can
how I can plot data from a csv file onto the map. I really appreciate your
assistance!
Regards,
Raoul
Roger Bivand wrote:
The illustration you show is for the so-called traditional or historical
counties of England, which may be available somewhere. There are
non-georeferenced PNG
implementations (GeoDa, Matlab spatial econometrics toolbox). It is not
obvious what you mean by validate in this context.
Roger Bivand
saniye keser wrote:
Hi everyone,
How can i obtain R2 for SAR model? and how can i validate the results, can
i use the coefficients directly in a simple formula
://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
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all possible use
cases, especially erroneous use cases, hence this message.
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for
hole at index 2
#Code ends
I don't know my way around SpatialPolygonsDataFrame objects very well, and have
no idea how to fix the errant hole.
Any help greatly appreciated.
Thanks
Dan Bebber
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fairly easily.
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guide
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and provide commented, minimal, self-contained, reproducible code.
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Economic Geography Section
Department of Economics
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, reproducible code.
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vasilis vasilis.dakos at gmail.com writes:
Hi there,
do you know if there is a package that fits spatio temporal autoregressive
models in R?
If by spatio temporal autoregressive models, you mean spatial panel models,
please see the splm package on R-Forge:
:(_)))( `·.¸¸.·´¯`·.¸.· _:(_
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http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
-
Roger Bivand
this?
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R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
-
Roger Bivand
Economic Geography Section
Department
__
R-help@r-project.org mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide
http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
-
Roger Bivand
Economic Geography Section
Department
-guide.html
and provide commented, minimal, self-contained, reproducible code.
-
Roger Bivand
Economic Geography Section
Department of Economics
Norwegian School of Economics and Business Administration
Helleveien 30
N-5045 Bergen, Norway
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View this message in context:
http://r.789695
code.
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Roger Bivand
Economic Geography Section
Department of Economics
Norwegian School of Economics and Business Administration
Helleveien 30
N-5045 Bergen, Norway
--
View this message in context:
http://r.789695.n4.nabble.com/update-views-Spatial-does-not-seem-to-be-able-to-find-RPyGeo
Mark Newcomb newc1.mac at me.com writes:
I'm hoping to use R for spatial analysis. In working through examples in
Chapt. 4 of Applied Spatial Data
Analysis with R I've come across the following error in trying to plot lines
with the meuse data set. The
text is verbatim from the book.
This
vioravis vioravis at gmail.com writes:
Thanks, Raphael. Just checked their website. It appears that they currently
do not have any online courses planned.
You may find that this site:
http://geostat-course.org/
has a wider range of possible courses.
Jason Rupert jasonkrupert at yahoo.com writes:
I'm new to making bubble plots with R, so I was going to try the following:
https://stat.ethz.ch/pipermail/r-sig-geo/2009-August/006258.html
Unfortunately, it looks like rgdal is not part of 2.14. I'm not sure if it
was the mirror I selected
Emmanuel Jjunju ejjunju at gmail.com writes:
I normally use the raster or clim.pact pckages to read netcdf (.nc) files.
This has always worked out for me until this weekend every time i try to
read a .nc file i get the following error
...
Could you please:
1. Consider moving this thread
David Epstein davideps at umich.edu writes:
Hello,
I want to create side-by-side maps of similar attribute data in two
different cities using a single legend.
To simply display side-by-side census block group boundary
(non-thematic) maps for Minneapolis Cleveland I do the following:
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