h Columbia
From: Philippi, Tom [tom_phili...@nps.gov]
Sent: Wednesday, August 20, 2014 11:42 AM
To: Mitchell, Kendra
Subject: Re: [R-sig-eco] horizontal lines in stacked bargraph ggplot
Not a definitive answer, but 3 suggestions.
1) try ggsave() for your .svg
2) try col
Hi All
I posted this question in the ggplot user group but realized that it's not
super active and I'm on a deadline for presenting this graph, so sorry about
the cross-posting.
I'm making stacked bargraphs to show distribution of major taxonomic groups
across a treatment regime (using ggplot
Sent: Thursday, February 20, 2014 5:19 AM
To: Mitchell, Kendra
Cc: r-sig-ecology
Subject: Re: [R-sig-eco] BiodiversityR CAPdiscrim error
Hi Kendra, (sorry I got your name wrong, missed the comma.)
[cc'ing the list: better to keep stuff there, so others could comment.]
Ah, that's the troub
I'm trying to run CAPdiscrim on a dissimilarity matrix with a catagorical
variable attached on the right with cbind
str(MD2.tyc.om)
num [1:34, 1:35] 0 0.53 0.857 0.962 0.763 ...
- attr(*, "dimnames")=List of 2
..$ : NULL
..$ : chr [1:35] "" "" "" "" ...
CAPdiscrim(MD.2.tyc.om~MD.2.tyc.om[,
From: Gavin Simpson [ucfa...@gmail.com]
Sent: Friday, December 06, 2013 11:09 AM
To: Dixon, Philip M [STAT]
Cc: Mitchell, Kendra; r-sig-ecology@r-project.org
Subject: Re: [R-sig-eco] NA error in envfit
Phillip,
You approach to using factors misses an important consideration; the
Thanks, makes sense to remove a variable that has no variation and it fixed the
issue. And that is much easier than building and installing from source.
--
Kendra Maas Mitchell, Ph.D.
Post Doctoral Research Fellow
University of British Columbia
604-822-5646
ip M [STAT] [pdi...@iastate.edu]
Sent: Thursday, December 05, 2013 8:42 AM
To: Mitchell, Kendra
Cc: r-sig-ecology@r-project.org
Subject: NA error in envfit
Kendra,
I wonder if the problem is a factor level with no observations. One of the
frustrating things about factors (class variables) in R is tha
I'm running a bunch of NMS with vectors fitted (slicing and dicing a large
dataset in different ways). I'm suddenly getting an error from envfit
f.bSBS.org.fit<-envfit(f.bSBS.org.nms, f.bSBS.org.env, permutations=999,
na.rm=TRUE)
Error in vectorfit(X, P, permutations, strata, choices, w = w,
I have a large species matrix with counts that I want to express as ratio to
the reference plots. I want to use a heatmap to display change in species as a
ratio to the reference
the layout is samples by rows and species by columns, it's currently a
data.frame with row.name=sample name, header
: Mitchell, Kendra
Subject: Re: [R-sig-eco] subsetting lower triangle distance matrix based on
variable in another object
Hi Kendra
I had a similar problem a while back. As Jari says, you have to do the
subsetting while the object is an ordinary matrix, and then convert it back to
a "dist"
I have a number of dissimilarity matrices built in another program that I'd
like to subset then run NMS.
#read in distance matrix
b_bc03 <-data.matrix(read.table("bac_final.an.thetayc.0.03.lt.ave.dist",
row.names=1, header=T, fill=TRUE)) # creates a 736x736 double matrix
#read in environmental
I'm working on a large bacterial dataset, 700 samples with ~5600 species (rare
species <100 observations have been removed). The samples are from
experimental plots from 6 ecozones. I've done nms, betadisp, and permanova
using several dissimilarity measures (jaccard, sorenson, Yuen's theta).
that's my current hypothesis.
--
Kendra Maas Mitchell, Ph.D.
Post Doctoral Research Fellow
University of British Columbia
From: Gavin Simpson [gavin.simp...@ucl.ac.uk]
Sent: Monday, April 22, 2013 3:41 PM
To: Mitchell, Kendra
Cc: r-sig-ecology@r-project.
I've run betadisp on a set of communities and would now like to compare the
distance for each sample from it's centroid to other measures such as alpha
diversity. Basically I want to check that increased dispersion isn't simply a
reflection of overall diversity. It seems like I should be able
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