Displaying 20 results from an estimated 31 matches for "varing".
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varying
2010 Jul 20
1
Exporting NMDS distance matris to csv
If you submit these lines, you end up with variable "vare.dis". I want
to export vare.dis to csv. Stuck I am.
library(vegan,logical.return = TRUE) #return=true verifies package is
available
library(MASS,logical.return=TRUE) #return=true verifies package is
available
data(varespec) #varespec is an example data file in the vegan package
vare.dis <- vegdist(varespec)
2012 May 23
1
procrustes (vegan) plot of residual differences
Hello
This is a simple question but I couldn't google an answer.
In the procrustes function of the vegan package, one uses
plot(procrustes_object, kind=2) to obtain a plot of the residual
differences. For instance:
data(varespec)
vare.dist <- vegdist(wisconsin(varespec))
library(MASS)
mds.null <- isoMDS(vare.dist, tol=1e-7)
mds.alt <- isoMDS(vare.dist,
2010 Apr 27
1
cca standard error species
Dear all,
I realised a correspondence analysis with function cca() of vegan library.
Just like in Okansen (2010) in the example of R help:
library(vegan)
data(varespec)
data(varechem)
vare.cca<-cca(varespec~ Al + P + K, varechem)
With plot.cca() function I represented the species matrix in the next way:
plot(vare.cca,display="species")
Being similar to:
plot((c(-2,2)),(c(-2,2)),
2008 Sep 26
1
cca constraining variables table
I performed canonical correspondence analysis (cca) with the example data of
vegan, but I'm not able to obtain a table like scores() for the constraining
variables. I can see them in the summary() mode, but it would be great to
have in a separate table. Any suggestion?, thanx Gianandrea
require(vegan)
data(varespec)
data(varechem)
vare.cca<-cca(varespec,varechem)
scores(vare.cca)
2008 Aug 07
2
panel.arrows problem in custom panel function
Dear List,
I am writing a custom panel function and xyplot method to plot the
results of a procrustes analysis from the vegan package.
I am having trouble getting the call to panel.arrows to work as I wish
when conditioning. The attached file contains the function definitions
for the xyplot method and the custom panel and prepanel functions I am
using. This example, using data and functions from
2007 Nov 07
2
creating a dynamic output vector
Let's say I have a program that returns variables whose names may be any
string within the vector
NAMES=c("varA","varB","varC","varD","varE","varF"..."varZ"), but I do
not ever know which ones have actually been created. So in one example
output, "varA", "varC", and "varD" could exist, but
2012 Nov 27
1
CCA plot
Hi, I have a couple questions about fitting environmental (land use
factors, plant species presence-absence, and soil variables) constraints to
my CCA biplot. 1. After successfully plotting species and site scores in my
CCA, I have been trying to insert the biplot arrows of the environmental
constraints in my data set using the text() function. When I do that, the
plot changes completely. Is there
2017 Jun 29
6
package to fit mixtures of student-t distributions
Hello!
I am new to R (before used python exclusively and would actually call the R solution for this issue inside a python notebook, hope that doesn?t disqualify me right of the batch).
Right now I am looking for a piece of software to fit a 1D data sample to a mixture of t-distributions.
I searched quite a while already and it seems to be that this is a somehwat obscure endeavor as most
2017 Jun 29
1
package to fit mixtures of student-t distributions
I don?t see how neither a) or b) applies to this question nor the technical merit of the remark about mixture models.
Do you have a suggestion for a more appropriate forum for this issue/question? (stackoverflow basically sent me here).
Kind regards
> On 29. Jun 2017, at 16:58, Bert Gunter <bgunter.4567 at gmail.com> wrote:
>
> Offlist, because this is (a) an opinion and (b)
2010 Apr 13
1
vegan (ordisurf): R² for smoothed surfaces
Dear r-helpers,
I just read in an article by Virtanen et al. (2006) where vegetation-environment relationships are studied by fitting smoothed surfaces on an NMDS ordination using GAMs (Wood 2000). The authors describe, that they used R? as goodness-of-fit statistic, which they compare to the R? of fitted vectors. Calculations were carried out using the package vegan (Oksanen).
I know that I can
2012 Jul 18
1
fitting several lme sistematically
Dear R-list,
I have a data set (in the following example called "a") which have:
one "subject indicator" variable (called "id")
three dependent variables (varD, varE, var F)
three independent variables (varA, varB, varC)
I want to fit 9 lme models, one per posible combination (DA, DB, DC, EA, EB, EC, FA, FB, FC).
In stead of writting the 9 lme models, I want to
2009 Jun 08
1
Interpreting R -results for Bivariate Normal
HI Guys,
I know that this forum is not for homework but I am trying to interpret R
output code.
I was just wondering if someone might be able to help.
I have been given the following.
For (X1,X2) distributed bivariate normal with parameters
mu1 = 5.8
mu2 = 5.3
sd1 = sd2 = 0.2
and p = 0.6
The r-code and inpit/output are as follows
input
m <- 5.3 + 0.6*(6.3 - 5.8)
s <-
2003 Oct 30
2
AW: trying to figure out how the --delete option works.
Add this:
--delete-excluded
See the manual.
Rainer
-----Urspr?ngliche Nachricht-----
Von: rsync-bounces+rsync=diplan.de@lists.samba.org
[mailto:rsync-bounces+rsync=diplan.de@lists.samba.org]Im Auftrag von
Mandrake Pe
Gesendet: Mittwoch, 29. Oktober 2003 13:33
An: rsync@lists.samba.org
Betreff: trying to figure out how the --delete option works.
I use this comand to back up my entirely drive
2017 Jun 29
0
package to fit mixtures of student-t distributions
Would package "teigen" help?
Ranjan
On Thu, 29 Jun 2017 14:41:34 +0200 vare vare via R-help <r-help at r-project.org> wrote:
> Hello!
>
> I am new to R (before used python exclusively and would actually call the R solution for this issue inside a python notebook, hope that doesn?t disqualify me right of the batch).
>
> Right now I am looking for a piece of
2017 Jun 29
0
package to fit mixtures of student-t distributions
Offlist, because this is (a) an opinion and (b) about statistics and
therefore offtopic.
I don't know whether any such package exists, but I would predict that
this is likely to be overdetermined (too many parameters) and
therefore unlikely to be a successful strategy. Fitting a mixture of
Gaussians is already difficult enough.
Feel free to ignore, of course, and no need to reply.
Cheers,
2013 Mar 27
1
Conditional CCA and Monte Carlo - Help!
Hi All,
I am using canonical correspondence analysis to compare a community
composition matrix to a matrix of sample spatial relationships and
environmental variables. In order to parse out how much variance is
explained purely by space (S/E) or the environment (E/S) I am using a
conditional (partial) CCA. I want to test significance via Monte Carlo but
I can not find a way to do this with a
2006 Nov 16
2
question about capscale (vegan)
Hello,
I am interested in using the capscale function of vegan package of R. I
already have a dissimilarity matrix and I am intended to use it as
'distance' argument. But then, I don't know what kind of data must be in
'comm' argument. I don't understand what type of data must be referred
as 'species scores' and 'community data frame' since my data refer to
2017 Jul 02
0
package to fit mixtures of student-t distributions
Thanks Ranjan,
that provides exactly what I need.
I also got a more elaborate answer on stackoverflow (after the same question got rejected form cross validated?) with a running example for this package:
https://stackoverflow.com/questions/44825529/package-to-fit-mixtures-of-student-t-distributions/44827220#44827220
2009 Dec 10
2
Problem with coeftest using Newey West estimator
Hi,
I want to calculate the t- and p-values for a linear model using the Newey West estimator.
I tried this Code and it usually worked just fine:
> oberlm <- lm(DYH ~ BIP + Infl + EOil, data=HU_H)
> coeftest(oberlm, NeweyWest(oberlm, lag=2))
t test of coefficients:
Estimate Std. Error t value Pr(>|t|)
(Intercept) 0.1509950 0.0743832 2.0300 0.179486
BIP
2008 Sep 05
3
how to draw the legend about color from 3d picture
...fferent altitude. In gnuplot, the corresponding command
'splot' will generate a picture beside to indicate the relationship
between color and altitude. But in R, how to draw it? I have read the
manual of legend, but they are all about how to draw a legend with
colored text, not a continuous varing color with corresponding number.