Skip to content

Search Archives

Search tips
from:Name Search by author name, e.g. from:Duncan Murdoch "exact phrase" Match an exact phrase word1 word2 Match messages containing both words Date range Use the date pickers to filter results to a time period

Use the list dropdown to narrow results to a specific mailing list. Combine from: with other terms to filter by author and content.

33 results for “from:Jens Oldeland”

Error in segmented() output from segmented package
Jens Oldeland · Nov 4, 2009 · r-help

Legend with fill = gray ?
Jens Oldeland · Sep 1, 2010 · r-help

No...but it works! I do not know why I did not find it... Many thanks! Hi David, thanks to you as well. Greg Snow schrieb: > Did you try gray.colors(3)? >

Pruning a delaunay triangulation with a shape
Jens Oldeland · Jul 22, 2010 · r-sig-geo

Hi Pierre, I think intersect.nb in the spdep package is what you are looking for? Have a look at the example there, looks quite similar to your problem. HTH, Jens -- +++++++++++++++++++++++++++++++++++++++++ Dipl.Biol. Jens Oldeland Biodiversity of Plants Biocentre Klein...

Significance of clarkevans in spatstat
Jens Oldeland · Dec 5, 2007 · r-help

Dear R-Users, I was wondering if there is a way to test the significance of the clarkevans statistic in spatstat package? I did not find any related function or the related values to calculate it by hand. does someone...

Combining spatial and temporal correlation structures - possible?
Jens Oldeland · May 26, 2011 · r-sig-mixed-models

Dear Mixed-Model SIG I am trying to use serial and spatial correlation structures in a gamm model. g2 <- gamm(sqrt(pp10M.day) ~ s(tempsurf, bs="cr"), data=data, random= list(Station= ~1), correlation=corARMA(form = ~ 1|Station, p =2...

Creating non-overlapping polygons from centroid with known size
Jens Oldeland · May 23, 2010 · r-sig-geo

Dear group, I am looking for a method that allows me to creating non-overlapping polygons from centroids with a known size. I have information on the location of farms in Azerbaijan. All farms have a specific size, but I...

Is it allowed to incorporate static covariates in Mixed effects models with time series data?
Jens Oldeland · Aug 25, 2011 · r-sig-mixed-models

I was recently told that it is not allowed to include static covariates in mixed effect models. There should be something written in "Applied Longitudinal Analysis, Fitzmaurice, Laird and Ware, Wiley & Sons, 2004. Chapter 12", however I do not have...

Do we have to cut a dendrogramm at a specific level or not
Jens Oldeland · Mar 6, 2011 · r-sig-ecology

Dear Group, I am currently preparing a lecture on 'Cluster Analysis' and I found two very different ways to interpret a dendrogram. The first option is to 'cut' a dendrogram at a specific height, like it is possible with the...

Attach values from polygons to points
Jens Oldeland · Sep 6, 2010 · r-sig-geo

Hi, I am working with two shapefiles in R; one is a point.shp the other is a polygon.shp. Now, I would like to intersect/join/attach all the values from the polygon to the table of the point...

Legend with fill = gray ?
Jens Oldeland · Sep 1, 2010 · r-help

Hi, I am facing a problem with the legend, I don?t know how to use the fill option in the legend in order to achieve the same standard gray levels that are plotted. Sorry for this easy one, but...

using two distance metrices in formula
Jens Oldeland · Oct 13, 2009 · r-sig-ecology

Dear R-sig-ecology group, is there a way to use two self-made dissimilarity matrices for the left-hand side (LHS) and right hand side (RHS) in vegan functions such as capscale or adonis? I created those matrices in...

Projection of Shapefiles using Maptools
Jens Oldeland · Nov 14, 2007 · r-help

Dear R-Users I have successfully imported my Shapefile using maptools with the following command lines, and I hoped that my object (nc) will be recognized as projected data, so I have included the CRS command: library(maptools) p4s = CRS...

R graphics: Add labels to stacked bar chart
Jens Oldeland · Sep 2, 2010 · r-help

Hi, I am looking for a way to add labels, i.e. absolute values, into a stacked bar chart using the basic plot functions of R. The labels should be inside the stacked bars. For example, ### I have this dataset...

Rank Values in a Matrix
Jens Oldeland · May 19, 2008 · r-help

Dear All, a short and maybe simple question: I have to rank all values in a matrix from 0 to X, [1] [2] [3] [4] [1] 0.1 2 0 3 [2] 50 3 3 1 [3] 100 1 1...

Delete Columns with zeros
Jens Oldeland · Jan 31, 2008 · r-help

Hi, I know there have been some discussions on that topic. all their solutions failed in my case... My problem is that I have a dataframe with many zeros. but while plotting they are not useful. so I want to...

Reading an ArcGIS raster file
Jens Oldeland · Apr 5, 2008 · r-help

> How can I read and plot an ArcGIS raster file into R ? Hi Juliane, I think what you are looking for is something like a function in the "adehabitat" package called "import.asc". First you need to convert your raster...

problem with nested loops
Jens Oldeland · Jul 30, 2008 · r-help

Dear all, I have a problem with constructing a nested loop. I have two matrices: pnr: 800 rows 14 columns where rows are 40x20 meaning that 40 rows belong to one of twenty objects in the matrix pnr mvp: 20...

Fit of ordination axes always given?
Jens Oldeland · Oct 30, 2009 · r-sig-ecology

Dear group, I have used the as.mlm.cca(vegan) function to derive statistical measures for the goodness of fit of my environmental variables and the ordination axes of an RDA. I prepared a manuscript in which I used spectral...

Legend with fill = gray ?
Jens Oldeland · Sep 1, 2010 · r-help

Hi, sorry for beeing unprecise. I am looking for a legend that has the same colors as the barplot. For a coloured version I would simply use the same fill=rainbow() option as used in creating the barplot. However, this...

adonis once again
Jens Oldeland · Apr 1, 2011 · r-sig-ecology

Dear list members, I have a question again on adonis and whether the interpretation is correct. I must admit that I am a big fan of ANOSIM, I think it is pretty simple to explain, in contrast to adonis. I...

Can't find what you're looking for? Try searching with Google .