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Dear R-help listers, Is anyone aware of a function that outputs dendrogram ultrametrics? Cheers, Lisa. PS please reply to me personally as well as to the list because the website wasn't letting me subscribe for some reason. thanks... Lisa Holman Research Officer, Vegetation Dynamics Policy & Science Division NSW Department of Environment & Conservation PO Box 1967, Hurstville 2220.

Hi all, I am looking for syntax to read a list of *txt files, (loop through?) each with a different data content but same fields, then run lines of code to produce summary stats (I have working code for this) and add the matching data file name when writing the results of a line of R code.?? Suggestions on any package vignettes that may be useful welcomed. My manual code for this is below

Hi all, It has been a year or so since I have run this code to plot temporal activity. It was working now I am getting an error related to MUTATE. Error in UseMethod("mutate") : ? no applicable method for 'mutate' applied to an object of class "character" Any help/suggestions welcomed. Tnx to all the R code gurus out there. R v 4.4.0 Bat Dude The saved code I

I'm not sure if this is a bug, or if I'm doing something wrong. =20 =46rom the worms dataframe, which is at in a file called worms.txt at =20 http://www.imperial.ac.uk/bio/research/crawley/therbook <http://www.imperial.ac.uk/bio/research/mjcraw/therbook/index.htm>=20 =20 the idea is to extract a subset of the rows, sorted in declining order of worm density, with only the maximum

Hi all, How can I set open files that contain values of Zero =0? These are valid values for the parameters I need to evaluate. I have tried CSV and tab formats. Trying XL Connect and/or XLConnectJars dies not seem to work to open Excel files so I am at a loss on how to get the data into a DF. Sample of data with 0 values: Filename Dur TBC Fmax Fmin Fmean Fc S1 Sc Pmc g8221843.13#

Would anybody be able to advise on which package would offer the best approach for producing a model able to predict the probability of species occupation based upon a range of variables, some of them catagorical (eg. ten soil types where the numbers assigned are not related to any qualitative/quantitative continuum or vegetation type) and others continuous such as field size or vegetation height.

First I would like to say thank you for taking the time to read it.Here is my problem. I am running a lmer analysis for binary longitudinal (repeated measures) data. Basically, I manipulated fruits and vegetation to two levels each(present and absent) and I am trying to access how these factors affect mice foraging behavior. The design consist of 12 plots, divided in 3 blocks. So each block

Hi all, I would like to set up an iterative read & write sequence to avoid reading and writing each file one at a time. Hundreds of data sets to re-calculate.? The code I have works well individually, but would like to set up an iterative read, calculate and write changing the input and output file names each iteration. I? think I have read that there is an R? feature using

On Thu, August 3, 2006 15:28, David Jonas wrote: > On Thu, 2006-08-03 at 15:07 -0400, Scott Zahn wrote: >> Hey everyone, I'm trying version 1.0rc2, via the rpm at ATrpms. I'm running on CentOS >> 4.3 on an Opteron system. I have this running stably on a 32 bit system, but I'm >> crashing constantly on a 64 bit system. >> >> Here's what I'm

Dear r-helpers, I estimated a generalized additive model (GAM) using Hastie's package GAM. Example: gam1 <- gam(vegetation ~ s(slope), family = binomial, data=aufnahmen_0708, trace=TRUE) pred <- predict(gam1, type = "response") vegetation is a categorial, slope a numerical variable. Now I want to assess the accurancy of the model using k-fold cross validation. I found the

Sorry, but I'm very new to R. I'm trying to figure out how to convert a column from a data frame to a vector. More specifically, I have read in a comma separated value table which contains a number of variables in columns, plots in rows... t <- read.table("G:/R/table1.txt", sep=",", header=TRUE) the data comes in just fine. Now I want to do an XY plot of 2

Hey everyone, I'm trying version 1.0rc2, via the rpm at ATrpms. I'm running on CentOS 4.3 on an Opteron system. I have this running stably on a 32 bit system, but I'm crashing constantly on a 64 bit system. Here's what I'm getting in my mail logs when I try to log in via IMAP: Aug 3 15:01:21 lisa dovecot: imap-login: Login: user=<scottz>, method=PLAIN,

I am having problems adding a user. Here is some background: OK this is my first attempt to build a Samba server so be gentle. Operating System: Fedora Core 3 Samba version: 3.0.10-1.fc3 I have set up a Stand-alone server to support my 4 client machines (all WinXP boxes w/o a domain). I had some difficulties getting things to work and eventually traced them down to a Firestarter

Hello all, I am going slightly mad trying to create a table for running co-correspondence analysis. What I have is seed bank and vegetation data, and my aim is to see if the vegetation found in a site (containing several seed bank samples) can predict the composition of a seed bank sample within that site. So for this I need two tables with matching rows. I have created an empty matrix,

Hi, This is a question regarding technique rather than an R specific issue. I have been asked to evaluate a 30+ year long term continuous survey of bird presence/absence data that has an associated ocular estimate of the vegetation community percent coverage. The data are organized by subpopulations (5), and by year ( 1991 - present). We are interested in gaining understanding on whether bird

I am trying to fit a formula to my data, but I just can't find the right way to do it. My experiment consists of manipulating FRUITS and VEGETATION to two levels each(intact or removed) on 12 experimental plots. This leaves me with 4 treatment combinations Fruit intact Vegetation removed Fruit int. Veget int. Fruit rem. Veget rem. Fruit rem. Veget. intac those treatements are distributed

[------------------------------------------------------] [ Cross-posted to samba and samba-ntdom mailing lists. ] [ Apologies for duplicates. ] [------------------------------------------------------] Fyi folks, Last year I served as co-chair for this conference (LISA-NT). It provides a very good outlet for letting others know some of the extremely interesting

Dear R users, I know, the topic is more related to the r-sig-ecology. I decided to post it to the r-help as some specific topics of my question deals with NA-values and RDA (R vegan) and an adaptated RDA code due to a specific study design (including a second matrix). I am calculating a RDA for a dependent matrix (different variables for tree performance) and different explanatory

Our CEO, Dr. Dan Steinberg, is planning to visit Europe in May. He would like the opportunity to introduce statisticians (and statistically minded people) to data mining, data mining applications and to forefront data mining tools. Our algorithms are probably familiar to many statisticians (CART, MARS, MART, TreeNet and RandomForests), although it isn't necessary to be a statistician to

I want to use LISA finite element program (http://www.lisa-fet.com/) under my Ubuntu machine. I did install Wine and it runs ok, then I install LISA and it installed without any error. However whrn I run LISA, it did not appear on the screen without any error? Anyone can assist how to me LISA running?