Hi everybody
I want to simulate a pattern of points based on maximization of Gibbs marked
point process density function by MCMC methods using R. I already know that rmh
function in spatstat will do that, but I couldn't find any good example code
for that... I don't know how should I determine
Le 04/09/2013 03:51 PM, JonathanAronson a écrit :
Hi Mathieu
Thank you so much for your quick response. I really appreciate the effort
and thank you for your answers.
I am now using the AdehabitatHS package but still have some questions.
1) I am not sure what (renfa$expvar), (renfa$pvalue) and
Thanks so much, Roger, for your suggestions.
I should have realized it was taking kilometers rather than meters!
My summary(r) is:
Object of class SpatialPointsDataFrame
Coordinates:
min max
coords.x1 -17.52090 51.40407
coords.x2 -34.82918 37.53746
Is projected: TRUE
proj4str
Hi Mathieu
Thank you so much for your quick response. I really appreciate the effort
and thank you for your answers.
I am now using the AdehabitatHS package but still have some questions.
1) I am not sure what (renfa$expvar), (renfa$pvalue) and (renfa$obs) are
actually telling me in the output.
https://stat.ethz.ch/pipermail/r-sig-geo/2013-April/017947.html
>> Can one
>> + create a 4D RasterBrick or RasterStack
>> + instruct projectRaster
>> so as to get 4D regridded output? Or must one
>> - create 3D RasterLayer's (i.e., one per LAY) from the 4D Brick
>> - regrid each 3D Layer
>> - r
See:
https://stat.ethz.ch/pipermail/r-sig-geo/2013-April/017934.html
for the first posting to ask about rgdal, rgeos, etc. on OSX for R 3.0.0.
The rgeos package is now available for this platform (the R offering for
OSX has changed a good deal for R 3.0.*), but rgdal is as yet not
available.
HI,
After a long time of not having problems with installing rgdal
on Mac OSX using
setRepositories(ind=1:2)
install.packages("rgdal")
(and even perhaps using the gui in RStudio?)
I get now
package ‘rgdal’ is not available (for R version 3.0.0)
Does anybody know if the package will be built fo
Dear Jonathan,
Here are a few comments:
1) I strongly suggest that you update to 'adehabitatHS', which has
superseded the good-old 'adehabitat'. See [1]. It will solve your error
with 'niche.test'.
2) For the tolerance, 'niche.test' will give you both the marginality and
the tolerance.
3)
On Tue, Apr 9, 2013 at 4:41 PM, Steven Ranney wrote:
> When I try to spTransform() the proj4string in barabay,
>
> spTransform(barabay, CRS("+proj=latlong +datum=WGS84 +ellps=WGS84
> +towgs84=0,0,0"))
>
> R prints out the object of barabay, including all of the lat/long values
> associated with t
Hi,
there seems to be a problem with the density function when using it with
an rasterStack object.
d<-density(a1,channel,plot=F)
"Error in nlayers == 1 : comparison (1) is possible only for atomic and
list types"
?density results in:
"Error in httpd("/library/NULL/help/density", NULL, NULL, c(
HA! Got it figured out.
It turns out that my shapefile was Longitude *then* Latitude while my
coordinates were in Latitude *then *Longitude. I changed them around,
copied the proj4string information from summary(*myshapefile*) to the
proj4string information into my coordinate information, and wa
Hmm.
I reread in my shapeFile using readOGR() and when I summary(), I get this:
> summary(barabay)
Object of class SpatialPolygonsDataFrame
Coordinates:
min max
x -90.15208 -89.73317
y 29.18969 29.49023
Is projected: FALSE
proj4string :
[+proj=longlat +datum=WGS84 +no_defs +ellps=
First of all thank you for the quick response.
I did read the shapefiles with readOGR and i understand how you would do
that with rgeos, but i have a single shapefile which consists of all these
little "cubes" and i do not understand in which way i can extract some of
these cubes from a single sha
I would approach this by reading the data in using readOGR from rgdal
package. Once you get your projections in order, I would use one of the
functions in rgeos to find which "cubes" (let's call them squares for the
lack of a better term :) ) lie on the country border.
You can merge() your data fro
Hi Steven,
You should check the projections of your datasets (summary()).
When I do the same kind of analyses, I use:
readOGR(), to read the shp
proj4string(), to assign a projection
overlay(), to make spatial overlay analysis
spplot(), to plot more than one spatial layer
hope this help
Sam
Hey people,
first of all:I am Using R 2.15.3.
I have 2 shapefiles (.shp+.dfb+...) and a csv-table.
Now, one shape(1) is the border of germany and the other is a grid-like
shapefile (2) (not a grid but many little cubes (1x1km). Now I want to have
a grid-like shapefile but only in the boundaries
All -
My apologies for what is likely a neophyte questions but I'm new to spatial
plotting in R and to .shp files in general. I don't know all the
terminology which makes reading the help files that much more difficult.
I've been asked to do a "point.in.polygon" analysis of some dolphin
resighti
Hello there
I am really hoping someone out there can help me. I have read the various
forums but havent found information that can help me.
I am running an ENFA in R for 12 species using 15 environmental variables.
Below is my code and some questions:
library(ade4)
library(adehabitat)
test<- re
On 04/08/2013 11:11 PM, Edzer Pebesma wrote:
>
>
> On 04/08/2013 08:12 PM, Saman Monfared wrote:
>> Dear All,
>> We know that the estimation of covariance parameters is an important
>> problem for spatial processes because the variogram shows the spatial
>> variation. In many cases to select th
No not yet, you see the "building" status here:
https://r-forge.r-project.org/R/?group_id=294
It will be ready when status has become "current".
Hard to say when it will be ready but normally it is very fast, occasionally
very slow...
(You could also build it from from source, but I think you shou
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