search for: environmental

I use a Mac (10.4.11 Mac Os X). In my .tcshrc I define an environmental variable MY. Is it possible to find out its value from inside R? When one loads R for Mac OS X Cocoa GUI written by: Simon Urbanek Stefano M. Iacus are files like .tcshrc read by R? Can I make the value of this environmental variable available to R? Sys.getenv() produces a lot of output, with t...

Research Assistant/Staff Scientist: Technology in Environmental Health (Silent Spring Institute; Boston, MA) Silent Spring Institute is a non-profit scientific research group studying the environment and health. We are a multi-disciplinary team and international leader in research on everyday exposures to hormone disruptors, tests for breast carcinogens, and e...

Hi, I want to include a vector representing the sites - environmental data correlation in a PCA. I currently use prcomp (no scaling) to perform the PCA, and envfit to retrieve the coordinates of the environmental data vector. However, the vector length is different from the one obtained in CAnoco when performing a species - environmental biplot (scaling -2). How can...

Often I perform the same task on a series of variables in a dataframe, by looping through a character vector that holds the names and using paste(), eval(), and parse() inside the loop. For instance: thesevars<-names(environmental) environmental$ToyOutcome<-rnorm(nrow(environmental)) tableOfResults<-data.frame(var=thesevars) tableOfResults$Beta<- NA rownames(tableOfResults)<-thesevars for( thisvar in thesevars) { thiscommand<- paste("thislm <- lm( ToyOutcome ~ ", thisvar, ", data=environm...

Hi, my question is not exactly about R... What I am looking for are hints and directions on suitable methods (available in R or elsewhere) to solve a grouping (or pattern recognition) problem of environmental features in an environmental gradient as described below. Given environmental sampling data set (Depth, Presence of sand, Presence of boulders, Presence of clay). 1 1 1 0 1 1 0 0 1 1 1 0 2 1 1 0 3 1 1 0 3 1 1 0 4 1 1 0 5 1 0 0 5 1 0 0 5 1 1 0 5 1 0 0 6 1 0 0 6 1 0 0 6 1 1 0 7 1 0 1 7 1 0 0 8 1...

I've been unable to find a R package that provides the means of performing Clarke & Ainsworth's BIO-ENV procedure or something comparable. Briefly, they describe a method for comparing two separate sample ordinations, one from species data and the second from environmental data. The analysis includes selection of the 'best' subset of environmental variables for explaining the observed spp ordination. Is there something available or being developed? Thanks, Pete

Dear R-list, I'm trying to estimate the relative importance of 6 environmental variables in determining clam yield. To estimate clam yield a previous work used the function Yield = (A^a*B^b*C^c...)^1/(a+b+c+...) where A,B,C... are the values of the environmental variables and the weights a,b,c... have not been calibrated on data but taken from literature. Now I'd like to...

...tenv works, which I would consider a bug. Even if you do not agree, then you may still want to document it for future users who might be bitten. As outlined in R-exts (?8.2.2): http://cran.r-project.org/doc/manuals/r-release/R-exts.html#Calling-R_002edll-directly R_HOME/bin needs to be in the PATH environmental variable (by the way, I actually found that I needed R_HOME/binR_ARCH instead: you may want to update this). There are 2 ways to get & set environmental variables in Windows (I just discuss the UTF16 "widechar" methods): 1) the Win32 interface, using GetEnvironmentVariableW, SetEnvi...

...ly set, but under FastCGI, the ENV hash is completely empty. I thought that environment variables were automatically passed to the FastCGI app as if it was a regular CGI application. Can someone help? Thanks, Stan McFarland -- View this message in context: http://www.nabble.com/problem-with-environmental-variables-and-FastCGI-t1506204.html#a4084539 Sent from the RubyOnRails Users forum at Nabble.com.

Having just discovered "Task Views" I see there isn't one for ecology/environmental science. I don't have the expertise to help with this, but I think it would be a very useful addition if there was any person (s) on the list willing to help create such a Task View. I am sure the maintainers of the Task Views will pick up on any responses to this post from volunteers. I per...

Hi, I have two tables and I need to merge both. I use the merge command, but in this way the name must be exactly. How I can make to compare independently of upper or lower-case? Look: data1<-data.frame(journal=c("Ecology","Environmental Entomology","Neotropical Biology And Conservation")) data2<-data.frame(journal=c("Ecology","Environmental Entomology","Neotropical Biology and Conservation","Sociobiology"),qualis=c("A1","A2","B1","B5&q...

...to each supported operating systems for applications to store data, config, and cache information respectively. These standard best practices include writing to directories in the users home filespace, which is also specifically against CRAN policy. These defaults can be overridden by setting the environmental variables R_USER_DATA_DIR , R_USER_CONFIG_DIR, R_USER_CACHE_DIR, respectively. If R developers should be using the locations provided by tools::R_user_dir() in packages, why does CRAN's check procedure not set these three environmental variables to CRAN compliant location by default (e.g. temp...

Dear friends, I have several sets of points in a transformed environmental space. Each set of points can be represented as a cloud in the environmental space. This space is spanned by n coordinates, corresponding to the first n PCs of 36 PCs of some environmental variables (12 monthly minimum temperatures, 12 monthly maximum temperature, 12 monthly precipitations). I...

The Stern Environmental Review, a British Government Report into tackeling global climate change has been published online. Leader page with presentation and speaking notes :- http://www.hm-treasury.gov.uk/independent_reviews/stern_review_economics_climate_change/sternreview_index.cfm The Stern Review Report :-...

...ion? manual. But some of the stuff is not clear to me and I would like to get clarifications on the following points (for a Windows installation with R_HOME=C:\\R\\R-2.9.1 ) : 1. I understand that I need to create a file, .Renviron with the following path : R_HOME\\etc\\.Renviron where a number of environmental variables can be set. I would first like to know if the file to be created is Renviron or .Renviron. Both versions are mentioned in the manual. By the way, many functions in R start with a period. Is there any special significance to a name (file, function etc) if it starts with a period? 2. I wan...

Hi Everybody, I been looking through google for better part of the day but I haven''t been able to find an answer to my problem. I need an environmental variable to be present in puppet, so that yum works correctly. However after reboot puppet doesn''t read /etc/profile and starts without this profile. If I go into server and do services puppet restart than everything works fine, since I am running this from an interactive login. This als...

Dear r-Community, Step1: I would like to calculate a NMDS (package vegan, function metaMDS) with species data. Step2: Then I want to plot environmental variables over it, using function envfit. The Problem: One of these environmental variables is cos(EXPOSURE). But for flat releves there is no exposure. The value is missing and I can't call it 0 as 0 stands for east and west. Therefore I kicked all releves with missing environmental variables....

...e mapping from one machine to another. Changing the USER or LOGNAME variables on the local machine can break local applications. So at present, users need to use the '-U' switch on the command line every time to enter their username on the foreign server. I propose that using an additional environmental variable, e.g. SMBUSER, would make life easier for such users. This variable could be set once in a user's startup files, and they would no longer need to enter the '-U' option each time they used a Samba client. For example, user 'johnd' on machineA has an acount on machineB c...

I am using R for environmental forensics (determination of the sources and/or groupings in mixtures of organic chemicals in the field). The goal is to determine in there are groups of samples with similar/dissimilar compositions, and to assign samples to a potential source or a mixture of sources based on the composition (unmixi...

https://bugzilla.mindrot.org/show_bug.cgi?id=1729 Summary: Bash environmental associative arrays not getting set Product: Portable OpenSSH Version: 5.2p1 Platform: Other OS/Version: Linux Status: NEW Severity: minor Priority: P2 Component: ssh AssignedTo: unassigned-bugs at mindrot.org...