84 data as input? Or do I need to do anything with the input
data or give some information to the function?
Many questions ... thanks a lot ...!
Best wishes,
Nils Breitbach
_
Nils Breitbach, Dipl.-Biol.
Institut für Zoologie, Abt. 5: Ökologie
J
Dear Gianni,
a good reference is the book "Applied Spatia lData Analysis with R", where
there is an example in the Chapter "6.4 Hexagonal Grids" on page 137. Try this
example using the test data set "meuse":
> library(sp)
> data(meuse.grid)
> HexPts <- spsample(meuse.grid, type = "hexagonal", c
Dear Community,
I already performed some successful Moran's I tests using the moran.test
function (spdep package) for my data but now I got an error that I do not
understand.
For the code:
> moran.temp <- moran.test(birds_s...@data[, i], birds.nb4.idw.W_lw,
> zero.policy = TRUE, na.action = n
Dear Community,
to pass general weights to a listw object (function nb2listw from the spdep
package) for a later Moran's I Test and I decided to follow the recommendation
of using the inverse distances as equivalent. I am still not sure how to
correctly calculate the inverse distances. I have o
Bis: Breitbach, Nils
Cc: r-sig-geo@stat.math.ethz.ch
Betreff: Re: [R-sig-Geo] Choosing the right nb2listw-style
On Sun, 22 Aug 2010, Breitbach, Nils wrote:
> Dear Community,
>
> to be able to evaluate the spatial autocorrelation within may data I am
> forced with the question of
Dear Community,
to be able to evaluate the spatial autocorrelation within may data I am forced
with the question of how to correctly choose the neighbours for my data. My
study plots (points) are not evenly distributed over my study area (approx. 30
x 30 km in size) and also the land-use type i
Dear Community,
trying to get through the examples from "Applied Spatial Data Analysis with R"
I got problems with the gpclib package.
The library was loaded correctly:
> library(gpclib)
General Polygon Clipper Library for R (version 1.5-1)
Type 'class ? gpc.poly' for help
... but the
Dear Community,
I hope that my question is not misplaced here, but I do not know where (and
whom) to ask other than here. My problem concerns methodical issues as well as
the search for the right R function.
For a quite some time I work with spatial data and I was now asked to test my
data for
Dear Community,
I am looking for a way to create polygons from a line-shape. I have now have a
line-shape where streets are characterised by the space between the right and
the left boarder of the street and the boarders consist of lines. Of course the
lines/streets are open at their endings an
Dear Francis,
I also struggle with graphics in R. To get an answer for your specific question
it would be necessary to tell the forum what kind of graphic you need (PDF,
eps, tif, jpg, ...) and what function you used so far. Generally there is not
an all-in-one answer for formatting graphics in
Dear Community,
this time I have a rather difficult problem to solve and I failed so far ... I
now hope that there is a solution slumbering somewhere here ...
Situation:
I have several polygons which represent seperated areas of one 95 % UD-Kernel
homerange calculation. Now I need to find the r
Dear community,
this time my question has something to do with with spatial context but not in
the sense we discuss it usually here. I tried to find out if it is possible to
ask R for the location (path) of the R-file from which I send the code. What I
want to ensure is, that the R code works,
Dear Community,
I am looking for a R-function (or if there is none directly in R in GRASS or
QGIS) that works just like the MulitBuffer Tool from the Toolbox in ESRIs
ArcGIS. Furthermore I would like to use an equivalent to the ArcGIS Tools
Intersect and Dissolve. Since I am just starting to do
Hi Community,
at the moment I am starting to analyse my telemetry data trying to be
independent from commercial software. So far I worked with ESRI's ArcInfo to
project data from one system into another. No I want to do this with R and so I
am looking for a function that is able to do it.
My
Hi Community,
I am new to this forum and I am starting to analyse my telemetry data trying to
be independent from commercial software. So far all I wanted to do was possible
with R. Now I am looking for a function that is able to do triangulation. The
structure of my data is as follows:
- two
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