Displaying 20 results from an estimated 600 matches similar to: "UPGMA"
2005 Jul 20
4
poisson fit for histogram
I haven't been an R lister for a bit, but I hope to enlist someone's
help here. I think this is a simple question, so I hope the answer
is not much trouble. Can you please respond directly to this email
address in addition to the list (if responding to the list is
warranted)?
I have a histogram and I want to see if the data fit a Poisson
distribution. How do I do this? It is
2004 Dec 09
1
more clustering questions
Sorry to bother you kind folks again with my questions. I am trying to
learn as much as I can about all this, and I will admit that I don't
have the proper background, but I hope that someone can at least point
me in the correct direction.
I have created a test matrix for what I want to do:
s1 s2 s3 s4 s5
s1 10 5 0 8 7
s2 5 10 0 0 5
s3 0 0 10 0 0
s4 8 0 0 10 0
s5 7
2004 Dec 08
2
similarity matrix conversion to dissimilarity
I have a matrix of similarity scores that I want to convert into a
matrix of dissimilarity scores so that I can apply some clustering
methods to the data. That is, high values in my matrix signify
similarity and low values (zero being the lowest) signify no
similarity. What functions/options in R or its packages are available
for making this kind of transformation of a matrix?
2009 Jan 17
1
Dendrogram with the UPGMA method
Hi,
I am clustering objects using the agnes() function and the UPGMA
clustering method (function = "average"). Everything works well, but
apparently something is wrong with the dendrogram. For example:
x<-c(102,102.1,112.5,113,100.3,108.2,101.1,104,105.5,106.3)
y<-c(110,111,110.2,112.1,119.5,122.1,102,112,112.5,115)
xy<-cbind(x,y)
library(cluster)
UPGMA.orig<-agnes(x)
2015 Dec 21
2
Cannot allocate vector of size
Hola a tod en s,
Soy nuevo en R-help-es, por lo que perdonadme si debería haber mandado este email a una sección en particular.
Quería consultaros un error que me aparece en R al hacer una matriz de disimilitud a partir de una tabla con 6000 columnas x 11000 filas. El mensaje que da R es "cannot allocate vector of size 10Gb", y me resulta extraño ya que tengo 64 Gb de RAM disponible.
2008 Feb 22
0
seeking function to perform Flexible UPGMA clustering
Hi all,
Has anyone got a function to perform clustering by Flexible UPGMA
(Un-weighted Pair Group Using Arithmetic Averaging) .
It does not seem to exist in any R package.
Regards,
Ton
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3 bis, Quai Chauveau - CP 220 69336 LYON cedex 09
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mail : ton.snelder at cemagref.fr
2015 Dec 22
2
Cannot allocate vector of size
Hola Rubén,
Totalmente de acuerdo con los consejos de Carlos. Ten en cuenta que
aunque R disponga de varios (bastantes) GB de memoria, algunos de los
objetos que va creando durante el proceso pueden consumirla por
completo. Es decir, que aunque tu ordenador tenga 64GB de RAM, es
posible que no queden 10 GB libres para almacenar un objeto (porque ya
hay demasiados objetos grandes en la
2015 Dec 23
2
Cannot allocate vector of size
Antes de nada, me gustaría daros las gracias por toda vuestra ayuda.
He estado probando todo lo que me habéis dicho a la vez, y no hay manera, sigo teniendo el problema con el espacio.
En cuanto al tamaño de la base de datos, es más grande de lo que puse, me equivoqué y puse el tamaño de una base anterior con la que estuve trabajando, la actual tiene 36866 filas x 6500 columnas.
He seguido todas
2015 Dec 22
2
Cannot allocate vector of size
Yo creo que el problema principal está en betapart.core(), que crea y
mantiene simultáneamente en memoria varios objetos de alrededor de 1 Gb
que luego combina en una lista... Probablemente es entre las líneas el
código de betaper.core donde hay que ir eliminando objetos.
Saludos,
Marcelino
El 22/12/2015 a las 18:26, Carlos J. Gil Bellosta escribió:
> Hola, ¿qué tal?
>
> Yo no
2013 Jul 23
1
Heat Map for species - code from Numerical Ecology with R
Hello, I am relatively new to R and I am working through the code that is provided in the book Numerical Ecology with R and I have run across an error message that I can't seem to figure out. I am using the vegan, ade4, gclus and cluster packages. The code is as follows: # Ordered community table # Species are ordered by their weighted averages on site scores or <- vegemite(spe,
2004 Nov 09
2
Data Censoring and Normality Tests
Hello,
I would like to know if there is a function in R that will test for
normality and handle censored data sets. Currently, I evaluate each
censored data set by the extent to which a normal scores plot
approximate a straight line. For complete data sets I use
shapiro.test().
Below is an example of a censored data set.
data1<-c(0.00, 0.00, 0.00, 5.86, 5.17, 8.17, 5.12, 4.92, 7.08,
2015 Sep 02
3
latest yum update messed up chrome
I yum updated yesterday and it updated chrome from 44.x to 45.x.
It runs but it has errors going to web pages and won't load its own settings/extension pages either. I ran chrome from the command-line and see these errors:
$ google-chrome
libGL error: dlopen /usr/lib/dri/swrast_dri.so failed (/usr/lib/dri/swrast_dri.so: cannot open shared object file: No such file or directory)
libGL error:
2005 Jan 03
1
building phylogenetic trees
Hello,
My name is Sivan and I am a master degree student in statistics,my problem is as follows:
I have a dataset containing gene sequences and I would like to create a phylogenetic tree from it.
The problem that I can't seem to find a function to do this kind of operation. I read the ape package manual and I haven't found a command that takes raw data and turns it into a tree.
does anyone
2008 Jun 16
0
pvclust distance matrix
Hello,
I am attempting to assign significance levels to a UPGMA cluster analysis as part my doctoral research. The pvclust function works well but doesn't include the similarity index I need (morisita's) as an option for computing a distance matrix. Morisita's is available in vegdist in the VEGAN library but I am having a hard time getting the vegdist function to "direct
2010 Dec 09
0
convert non-ultrametric phylo to dendrogram
I am beginning to work with the 'ape' package in R, and have run into some
trouble. I generated a UPGMA tree based on DNA sequence distance in Paup*
and read it into R, where it became an object of class "phylo". However, I
need it to be classified as a "dendrogram" for my purposes (to use it to
order the layout of a heatmap). I get an error using as.hclust.phylo
2006 Mar 03
0
Important Statement to Review for Signing
(Seems to me that Icecast folks would be particularly concerned
about this. Please consider the following, lend your signatures,
and also *send it on* to appropriate interested parties. If you
are a blogger or know clueful bloggers, please try to have it
posted in a highly visible forum. -- Seth Johnson)
Hello folks,
Please review the important joint statement below, related to the
WIPO
2003 Dec 11
1
cutree with agnes
Hi,
this is rather a (presumed) bug report than a question because I can solve
my personal statistical problem by working with hclust instead of agnes.
I have done a complete linkage clustering on a dist object dm with 30
objects with agnes (R 1.8.0 on
RedHat) and I want to obtain the partition that results from a cut at
height=0.4.
I run
> cl1a <- agnes(dm, method="complete")
2003 Dec 11
1
cutree with agnes
Hi,
this is rather a (presumed) bug report than a question because I can solve
my personal statistical problem by working with hclust instead of agnes.
I have done a complete linkage clustering on a dist object dm with 30
objects with agnes (R 1.8.0 on
RedHat) and I want to obtain the partition that results from a cut at
height=0.4.
I run
> cl1a <- agnes(dm, method="complete")
2011 Jan 27
3
agnes clustering and NAs
Hello,
In the documentation for agnes in the package 'cluster', it says that NAs are allowed, and sure enough it works for a small example like :
> m <- matrix(c(
1, 1, 1, 2,
1, NA, 1, 1,
1, 2, 2, 2), nrow = 3, byrow = TRUE)
> agnes(m)
Call: agnes(x = m)
Agglomerative coefficient: 0.1614168
Order of objects:
[1] 1 2 3
Height (summary):
Min. 1st Qu. Median Mean 3rd
2013 Jun 09
1
agnes() in package cluster on R 2.14.1 and R 3.0.1
Dear R users,
I discovered something strange using the function agnes() of the cluster
package on R 3.0.1 and on R 2.14.1. Indeed, the clusterings obtained are
different whereas I ran exactly the same code.
I quickly looked at the source code of the function and I discovered that
there was an important change: agnes() in R 2.14.1 used a FORTRAN code
whereas agnes() in R 3.0.1 uses a C code.