Dear Alexandre,
currently, the parameter anis in one of the building blocks of a
spatio-temporal variogram model is not supported. The spatio-temporal
anisotropy (e.g. in a metric model) is part of the spatio-temporal
variogram model definition (stAni), see ?vgmST for available models
and
hi,
am specifying a variogram with 53 years by generating the time variable as
follows:
time - as.POSIXct(paste0(1960:2012,-01-01), tz = GMT)
When i generate the map variagram, it comes with time in thousands (see
attached map). how can i make sure that it gives time in years with a
reasonable
Hello,
I have encountered strange results, when using Geometry Relationship tools
in rgeos package.
I have set of lines and points and want to check, which point lies on which
line.
The results, which I obtain using rgeos tools, are incorrect, however.
For example, I have point 59 and line 63.
Hello!
I think it is showing days rather than years.
From: r-sig-geo-boun...@r-project.org [r-sig-geo-boun...@r-project.org] on
behalf of Jonesmus Wambua [jonesmus.mu...@gmail.com]
Sent: Tuesday, February 26, 2013 4:03 AM
To: r-sig-geo@r-project.org
Subject:
Erin, there is AFAIK in R no other way to represent a year then by its
first Date, and that is what Jonesmus did.
Jonesmus, I didn't see the map that you mentioned in your email.
In the plot that you sent, lag1 refers to the first temporal lag.
variogramST will assume time to be strictly
Hi, everybody
I am trying to use the regression trees to map some soil attributes of
tropical hillslope areas with rpart package.
The regression trees shows good results (in r2 evaluation = 0.28 - it is
not so bad for soil attributes mapping comparing wiht others models like
lm or geostats),
but I
Hi,
I am trying to use Geospatial Modelling Environment to run kernel density
estimates on GPS transmitter data for several individual animals. I want to
run 1 KDE per animal, then average them all using Raster Calculator. This
means I must force the extents of each KDE to be the same across all
i want to install package spgwr by zip file.
the package is succesfully unpacked, but when i call it
library (spgwr)
there is a comment error :
Error: package âspâ required by âspgwrâ could not be found
Regards,
Lilis Nurul Husna
Institute of StatisticsÂ
Jakarta
Hi,
The error message is explicit enough. You need to install the 'sp' package.
Regards,
Pascal
Le 27/02/2013 13:12, Lilis Husna a écrit :
i want to install package spgwr by zip file.
the package is succesfully unpacked, but when i call it
library (spgwr)
there is a comment error :
Error:
Hi Kate,
It's always tough to decipher errors in code without the raw data to play
around with. However I appreciate that the acoustic detection datasets can be
huge (102656 in your case) and not easy to push around.
From reading your code, I'm unsure why you need to run the for-loop on the
G'day,
I have a raster file ( Landuse for Australia
http://adl.brs.gov.au/anrdl/metadata_files/pa_luausr9abll07611a00.xml )
with projection GDA94 Australian Albers (EPSG:3577).
class : RasterLayer
dimensions : 76740, 80200, 6154548000 (nrow, ncol, ncell)
resolution : 50, 50 (x, y)
Adam,
library(raster)
# create RasterLayer with the same parameters as yours
r - raster(nrow=50, ncol=50, xmn=-1888000, xmx=2122000, ymn=-4847000,
ymx=-101, crs=+proj=aea +lat_1=-18 +lat_2=-36 +lat_0=0 +lon_0=132
+x_0=0 +y_0=0 +ellps=GRS80 +towgs84=0,0,0,0,0,0,0 +units=m +no_defs)
# to
Juliann,
For a p-value for the global Moran I think you could do a permutation test,
something like this:
library(raster)
r - raster(nrows=10, ncols=10)
r[] - 1:ncell(r)
M - Moran(r)
s - r
n - 100
m - rep(NA, n)
for (i in 1:n) {
values(s) - sample(values(s))
m[i] - Moran(s)
}
p - sum(m M)
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