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16 results for “from:Penner, Johannes”

ctc package
Penner, Johannes · Jun 11, 2009 · r-help

Dear Allan, Thank you very much! Sometimes the forest is difficult to see when you are looking at the trees only... as we would say... With kind regards Johannes

dimnames does not match array extent
Penner, Johannes · May 23, 2009 · r-help

An embedded and charset-unspecified text was scrubbed... Name: not available URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20090523/37056874/attachment-0001.pl>

name siz ein cluster
Penner, Johannes · May 13, 2009 · r-help

I would like to change to size of the names in a cluster dendrogram (not the axis or the header) (package clue). The "normal" things (pch, cex.label, font) do not work here. Thanks in advance! Johannes

consensus clusterings
Penner, Johannes · May 18, 2009 · r-help

Dear all, does anybody know a package or solution which incorporated one of the three algorithms to build consensus clusters, proposed by Nguyen & Caruana: - iterative voting consensus (ivc) - iterative probabilistic voting consensus (ipvc) - iterative pairwise consensus (ipc) Thanks in advance...

using multiple matrices
Penner, Johannes · May 14, 2009 · r-help

Dear R-list, another question trying to build consensus cluster ;-) Using the package "clue" I have found a method of building consensus clusters the following way from one distance matrix: clust1 <- c("ward", "single", "complete", "average", "mcquitty", "median", "centroid") clust...

cn is not a nb object
Penner, Johannes · May 8, 2009 · r-help

Dear all, I am trying to calculate barriers with the monmonier algorithm (adegenet). mon1 <- monmonier(mycoordinates, mydistancamatrix, network$cn, ...) The network beforehand looked alright. However, I always get the error: "cn is not a nb object". I am not really...

null model for a single species?
Penner, Johannes · Mar 7, 2011 · r-help

Dear List members, I would like to test whether an observed occupancy of lakes in a landscape has occurred randomly (by chance) or not. How can I do that? The problem is that it concerns only a single species and...

null models for a single species
Penner, Johannes · Mar 8, 2011 · r-sig-ecology

Dear List members, I would like to test whether an observed occupancy of lakes in a landscape has occurred randomly (by chance) or not. How can I do that? The problem is that it concerns only a single species and...

ctc package
Penner, Johannes · Jun 11, 2009 · r-help

Dear R-helpers, I would like to export hierarchical clusters e.g. fit <- hclust(d, method="ward") in the newick format write(hc2Newick(fit),file='hclust.newick') Searching for a possibility I found this solution in the package ctc (http...

triangular plot
Penner, Johannes · Jun 11, 2009 · r-help

Sorry for probably again an easy question but I can not find the solution... Using the ade4 package I am drawing a triangular graph: triangle.plot(data2, label = row.names(data2), clab=0.6, show.position=FALSE, box=FALSE) Which...

graph with 15 combinations
Penner, Johannes · Apr 20, 2009 · r-help

Dear R helpers, I have a data set with 4 types (W, C, E & S). Now I have values for all types plus all possible combinations (the order is unimportant): W, C, WC, E, WE, CE, WCE, S, WS, CS...

dimnames do not match array extent
Penner, Johannes · May 11, 2009 · r-help

Dear adegenet users, I am trying to calculate geographical barriers using "monmonier". However, I consistently get the error "dimnames do not match array extent". - import of the distance matrix: read.table - conversion 1: as.dist(data, diag=TRUE, upper =TRUE...

chaining & consensus in cluster analyses
Penner, Johannes · Apr 3, 2009 · r-help

Dear R-helpers, conducting different community ecology analyses my main aim is to find groupings in the data and geographical borders between communities and to prove them statistically. So after conducting a global test (Mantel) I am running a NMS...

name siz ein cluster
Penner, Johannes · May 13, 2009 · r-help

I tried for example: Plot(mycluster, font=2) But this changes only the font size of the y-axis. Regards Johannes -- Project Coordinator BIOTA West Amphibians Museum of Natural History Dep. of Research (Herpetology) Invalidenstrasse 43 D-10115 Berlin Tel...

graph with 15 combinations
Penner, Johannes · Apr 20, 2009 · r-help

Thanks a lot! That is exactly what I was looking for! Best wishes Johannes -- Project Coordinator BIOTA West Amphibians Museum of Natural History Dep. of Research (Herpetology) Invalidenstrasse 43 D-10115 Berlin Tel: +49 (0)30 2093 8708 Fax: +49...

null models for a single species
Penner, Johannes · Mar 8, 2011 · r-sig-ecology

Dear Prof. Oksanen, thank you very much for the quick reply! I will try to give more details on the problem. The data is from a colleague and she is investigating what are the responsible factors (environmental and genetic) for...

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