Displaying 20 results from an estimated 1000 matches similar to: "Cluster Analysis and PCoA (mixt variables)"
2013 Mar 05
0
Fwd: Re: How to reference to the `stats` package in academical paper
Julien,
I would just try your best given the journal's style guide and wait for
them to change it. For what it is worth, my last paper was corrected as
follows.
(In text)"...one-way analysis of variance (ANOVA) in R [version 2.14.2
(R Core Team, 2012)].
(reference section)
R Core Team. 2012. R: A language and environment for statistical
computing. 11 Oct. 2012.
2007 Oct 22
1
plot3d with more than 8 colors
Hello R user and helper!
I would like to get a 3d plot with coloured points.
I did that:
colors<-c(rep("2",7), rep("3",12), rep("4", 24), rep("5", 13), rep
("6", 8), rep("7", 51), rep("8", 1), rep("9", 15), rep("10", 53), rep
("11",3), rep("12",3), rep("13", 8),
2006 Nov 28
1
problem with source(), parse() and "french" colnames
Hello every one
Working under Windows Xp in French, and R version 2.4.0 (and : >
localeToCharset() : "ISO8859-1" )
I am trying to source a file with basic commands.
source("R files/InputFile Analysis (Calculs et mises à l'échelle - gestion
des pb d'unités).r")
and it works fine as long as I do not use command like these ones :
2013 Apr 11
1
Ordination Plotting: Warning: Species scores not available
Hi,
I am working with a species-by-trait .csv file (columns=traits, rows=species) and get the following warning message when trying to plot results of both metaMDS and pcoa:
"Warning message:
In ordiplot(x, choices = choices, type = type, display = display, :
Species scores not available"
I am using a Gower's transformation in both procedures within the metaMDS or pcoa
2006 Feb 07
0
Subsetting matrices
Dear R-Helpers,
I am working on a dataset containing ca. 500 specimens of 17 different
species. The data is three text columns, followed by ca 70 columns of
binary data.
I'm trying to write a function that will allow me to interactively
exclude species using the inofrmation in the third text column. My
function, matrix.slicer, appears to work as I intend. However, when I
pass the
2007 Sep 24
1
save 3dplot to file
I think it is an easy question but i haven´t found a solution since I
am r beginner.
I did this
plot3d(PCoA, type="p", col=rainbow(1000),size=5)
text3d(PCoA, text=Nam)
How can I save it including the labels to a jpg-file?
Thanks in advance.
Birgit
Birgit Lemcke
Institut für Systematische Botanik
Zollikerstrasse 107
CH-8008 Zürich
Switzerland
Ph: +41 (0)44 634 8351
2011 Jan 07
0
Odp: Currency return calculations
My mistake sir. I was literally engrossed in my stupid logic, and while doing so, overlooked the simple and very effective solution you had offered. Sorry once again sir and will certainly try to be very careful in future.
Thanks again and have a great weekend sir.
Regards
Amelia
--- On Fri, 7/1/11, Petr PIKAL <petr.pikal@precheza.cz> wrote:
From: Petr PIKAL
2008 Sep 02
2
cluster a distance(analogue)-object using agnes(cluster)
I try to perform a clustering using an existing dissimilarity matrix that I
calculated using distance (analogue)
I tried two different things. One of them worked and one not and I don`t
understand why.
Here the code:
not working example
library(cluster)
library(analogue)
iris2<-as.data.frame(iris)
str(iris2)
'data.frame': 150 obs. of 5 variables:
$ Sepal.Length: num 5.1 4.9 4.7
2003 May 09
1
Principal coordinates analysis
Dear all,
Does anyone know how to run Principal Coordinates Analysis (PCoA) from a
squared euclidean dissimilarity matrix with R ?
Thanks,
*************************
Arnaud DOWKIW
Department of Primary Industries
J. Bjelke-Petersen Research Station
KINGAROY, QLD 4610
Australia
T : + 61 7 41 600 700
T : + 61 7 41 600 728 (direct)
F : + 61 7 41 600 760
**************************
2004 Oct 22
1
building an R package : where and how should my fortran library be loaded ?
Hi ,
I'm currently trying to make available
a few fortran subroutines and R functions
(which make interface to these subroutines),
as an R package.
I'm doing it under linux with R 1.9.0
(but hope to do it for windows too).
I have trouble for loading my fortran code.
Here are the steps involved :
1) In R:
# Create tree for package
2018 May 16
0
Maillog warning
I have comment the line...
But now I see other warning :
_WARNING: /ETC/DOVECOT/CONF.D/OLD-90-QUOTA.CONF LINE 39: GLOBAL SETTING
MAIL_PLUGINS WON'T CHANGE THE SETTING INSIDE AN EARLIER FILTER AT
/ETC/DOVECOT/CONF.D/15-LDA.CONF LINE 13 (IF THIS IS INTENTIONAL, AVOID
THIS WARNING BY MOVING THE GLOBAL SETTING BEFORE
/ETC/DOVECOT/CONF.D/15-LDA.CONF LINE 13)_
AND... I see an error message :
2013 Apr 03
5
Can package plyr also calculate the mode?
I am trying to replicate the SAS proc univariate in R. I got most of the
stats I needed for a by grouping in a data frame using:
all1 <- ddply(all,"ACT_NAME", summarise, mean=mean(COUNTS), sd=sd(COUNTS),
q25=quantile(COUNTS,.25),median=quantile(COUNTS,.50),
q75=quantile(COUNTS,.75),
q90=quantile(COUNTS,.90), q95=quantile(COUNTS,.95),
q99=quantile(COUNTS,.99) )
2009 Jul 30
1
stepwise variable selection method wanted
Hi List,
I am looking for a variable selection procedure with a forward-backward selection method.
Firstly, it is meant to work with the cophenetic
correlation coefficient (CPCC) and intended to find the variable combination with the
highest cophenetic correlation. Secondly, it is aimed at Gower metric with
wards method (though this could be easily extended) aimed at categorical data.
What I
2018 May 16
3
Maillog warning
I just have thus to comment on the line in the file?
---
##########
Philippe - Forums
Le 2018-05-16 18:52, Sami Ketola a ?crit :
>> On 16 May 2018, at 19.49, forums at mehl-family.fr wrote:
>>
>> Hi,
>>
>> In my maillog I see this warning message at every reception of e-mail:
>>
>> _STATUS=SENT (DELIVERED VIA DOVECOT SERVICE (DOVECONF:
2018 May 16
2
Maillog warning
> On 16 May 2018, at 20.16, forums at mehl-family.fr wrote:
>
> I have comment the line...
>
> But now I see other warning :
>
> Warning: /etc/dovecot/conf.d/OLD-90-quota.conf line 39: Global setting mail_plugins won't change the setting inside an earlier filter at /etc/dovecot/conf.d/15-lda.conf line 13 (if this is intentional, avoid this warning by moving the global
2005 Apr 22
1
density estimation
hello
sorry for my english
I would like estimate density for multivariate variable,( f(x,y) , f(x,y
,z) for example) ; for calculate mutual information
how is posible with R?
thanks
Bernard
Bernard Palagos
Unité Mixte de Recherche Cemagref - Agro.M - CIRAD
Information et Technologie pour les Agro-Procédés
Cemagref - BP 5095
34033 MONTPELLIER Cedex 1
France
2007 Jul 23
1
Cluster prediction from factor/numeric datasets
Hi all,
I have a dataset with numeric and factor columns of data which I developed a
Gower Dissimilarity Matrix for (Daisy) and used Agglomerative Nesting
(Agnes) to develop 20 clusters.
I would like to use the 20 clusters to determine cluster membership for a
new dataset (using predict) but cannot find a way to do this (no way to
"predict" in the cluster package).
I know I can use
2005 Jul 05
1
calling fortran functions CHOL and DPOTRF form Fortran
Hi all,
I'm working out some Fortran code for which
I want to compute the Choleski decomposition of a covariance matrix
in Fortran.
I tried to do it by two methods :
1) Calling the lapack function DPOTRF.
I can see the source code and check that my call is correct,
but it does not compile with:
system("R CMD SHLIB ~/main.f")
dyn.load("~/main.so")
I get:
Error in
2005 Nov 09
2
how to convert strings back to values?
Dear All,
It's Eszter from Hungary, a total beginner with R. My problem is the
following:
I have a dataset with binary values as a comma separated textfile. The
samples are in the coloumns and the species are in the rows.
I have to transpose it for the further PCoA analysis. There is no
problem with reading the dataset.
When I transpose the dataset, the original values become
2011 Jan 07
1
Currency return calculations
Dear sir, I am extremely sorry for messing up the logic
asking for help w.r.t. my earlier mails
I have tried to explain below what I am looking for.
I have a database (say, currency_rates) storing datewise
currency exchange rates with some base currency XYZ.
currency_rates <- data.frame(date =
c("12/31/2010", "12/30/2010", "12/29/2010",