search for: epa

Sorry, I know I should read a little 1st about this, but I am actually just helping somebody really quick and need help too. I want to grep all of the names of the .txt files mentioned on this html web page: http://www.epa.gov/emap/remap/html/three/data/index.html Thanks ahead of time. -- View this message in context: http://r.789695.n4.nabble.com/grep-txt-file-names-from-html-tp4648037.html Sent from the R help mailing list archive at Nabble.com.

Does R do cumulative frequency distribution plots? -- Tommy E. Cathey, Senior Scientific Application Consultant High Performance Computing & Scientific Visualization SAIC, Supporting the EPA Research Triangle Park, NC 919-541-1500 EMail: cathey.tommy at epa.gov My e-mail does not reflect the opinion of SAIC or the EPA. Federal Contact - John B. Smith 919-541-1087 - smith.johnb at epa.gov

Hello, Here is a link to some data: http://www.epa.gov/emap/html/data/surfwatr/data/mastreams/9396/wchem/chmval.txt I am trying to read this in, and want to use: chmval <- read.table("http://www.epa.gov/emap/html/data/surfwatr/data/mastreams/9396/wchem/chmval.txt", sep=",", skip= 84, header=T) the # 84, for 84 lines skippe...

...myFunk<-function(a,b,foo,bar) {foo<<-a+b; bar<<-a*b;} > x<-0; y<-0; > myFunk(4,5,x,y) > x<-0; y<-0; > myFunk(4,5,x,y) > x [1] 0 > y [1] 0 What (no doubt simple) reason is there for x and y not changing? Thank you, cur -- Curt Seeliger, Data Ranger CSC, EPA/WED contractor 541/754-4638 seeliger.curt at epa.gov

...') ,select=c('YEAR','SITE_ID','VISIT_NO','TRANSECT','TRANSDIR' ,'UNDERCUT' ) ,drop=TRUE ) Thanks all for your help. cur -- Curt Seeliger, Data Ranger CSC, EPA/WED contractor 541/754-4638 seeliger.curt at epa.gov

...nvitado time server = Yes deadtime = 20 socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192 printcap name = cups logon path = logon home = domain logons = Yes os level = 65 preferred master = Yes domain master = Yes wins support = Yes ldap admin dn = cn=Administrador,o=Ferreteria EPA ldap delete dn = Yes ldap group suffix = ou=group ldap machine suffix = ou=people ldap passwd sync = Yes ldap suffix = ou=c1,c=sv,o=Ferreteria EPA ldap user suffix = ou=people idmap domains = DEFAULT idmap alloc backend = ldap idmap alloc config:range = 10000-100000 idmap alloc config:lda...

...fn". So that means "BFGS" method can handle even if fn function is infinite value? What I really want to know is that can I get the same result by using L-BFGS-B method? +++++++++++++++++++++++++++++++++++++++++++++++++++++ Changku Kang National Center for Environmental Assessment EPA (B211F) 919-541-1396 919-541-0245 (fax) Kang.Changku at epa.gov Graduate Student Department of Statistics, NCSU ckang2 at stat.ncsu.edu 919-513-2956 +++++++++++++++++++++++++++++++++++++++++++++++++++++

...5) Service Pack 2.0 Search Path: .GlobalEnv, package:OPmodels, package:odesolve, package:ctest, Autoloads, package:base R. Woodrow Setzer, Jr. Phone: (919) 541-0128 Experimental Toxicology Division Fax: (919) 541-4284 Pharmacokinetics Branch NHEERL B143-05; US EPA; RTP, NC 27711

...invalid formal argument list for "function" Can someone give me a simple example for doing this? Thanks! R. Woodrow Setzer, Jr. Phone: (919) 541-0128 Experimental Toxicology Division Fax: (919) 541-4284 Pharmacokinetics Branch NHEERL B143-05; US EPA; RTP, NC 27711

...need to calculate the cdf of the standard normal distribution, i.e. H(x) = 1/sqrt(2*pi) integral(exp(-z^2/2) dz), where z is b/w -infi to infi. I know there should be a way to do it in R, but did not know to do it. I'd appreciate any help you could offer. Charlie Liu Graduate student intern at EPA/ECO -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request at...

...and how to improve it. It''s really short, under 100 lines with comments. Of course, this is just a really rough solution that I hacked together to experiment with interfacing with broadcasting clients and audio players. Anyway, here it is: http://pastie.caboo.se/59073 Thanks, -carl -- EPA Rating: 3000 Lines of Code / Gallon (of coffee)

This is not a request for help, but I thought the readers of this mailing list might appreciate the following, anyway. I have been working with US EPA's (that's the United States Environmental Protection Agency) Office of Pesticides on a preliminary assessment for the effects of exposure to multiple organophosphate pesticides on human health (as required by the Food Quality Protection Act). This is a particularly high profile activity, a...

...as.POSIXct.default(as.numeric(as.POSIXct(strptime(tmp, "%m/%d/%Y %H:%M:%S")))) : Don't know how to convert `as.numeric(as.POSIXct(strptime(tmp, "%m/%d/%Y %H:%M:%S")))' to class "POSIXct" Thanks in advance. H. Joel Allen, PhD Environmental Scientist U.S. EPA NRMRL, Water Quality Management Branch 26 W. Martin Luther King Dr Cincinnati, OH 45268 Phone: 513 487-2806 Fax: 513 569-7052 Email: allen.joel at epa.gov

...esult matrices I plot using matplot. I would like to display the resulting plots successively, rather than simultaneously, and I was wondering if anyone could point me in the right direction as to how to do this. The graphs pop up in this manner by default when I run my script in S-PLUS, with tabs separating them so I can view each graph at my leisure. However when I run my script in R, each graph pops up only for a moment before it is replaced by the next until I am left with only the plot of the eighth matrix at the end of the script. Thanks in advance for your help! Amy Paternostro National C...

I don't understand this behavior: > a <- c(0, 1, 2, 3) > b <- c(1, 2, 3, 4) > ifelse (a == 0, 0, b[a]) [1] 0 2 3 1 rather than the desired 0 1 2 3. Thanks for any explanation.

Hi, I want to use map("state") and have the ecoregion shape (please see link) file projected onto this. ftp://ftp.epa.gov/wed/ecoregions/cec_na/NA_CEC_Eco_Level3.zip ftp://ftp.epa.gov/wed/ecoregions/cec_na/NA_CEC_Eco_Level3.zip Could someone please show me how; I have never messed with this sort of thing. Thanks. -- View this message in context: http://r.789695.n4.nabble.com/map-and-shapefile-help-tp4522794p4...

...(Inh and Ki are arguments to the function used in the formula for the object whose predictions were requested). It turns out that the problem is in getCovariateFormula(). The final line in getCovariateFormula() in the nlme package (version 3.1-16) is: eval(parse(text = paste("~", deparse(form)))) however, if deparse(form) exceeds 'width.cutoff (which defaults to 60)', this results in inappropriately placed "~" signs: For example, in my application with the error, form is UnCompetitive(MethoxyresorufinConc, InhibitorConc, Vmax, Km, Ki) the result of the paste...

...rough to the compiled code, and find the pointer on that side (and how to do that)? Thanks. R. Woodrow Setzer, Jr. Phone: (919) 541-0128 Experimental Toxicology Division Fax: (919) 541-5394 Pharmacokinetics Branch NHEERL MD-74; US EPA; RTP, NC 27711 -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-...

Hello, I'm attempting to classify data using tree(). summary(tree()) indicates that I have a very good classification rate. What I'd like to know is which tokens in the data set are correctly classified and which are not. Is there a method for associating the classification with the token? I've been reading Chambers and Hastie (1992) chapter 9 on tree-based models, but find no

...01 day = 15 language = R Search Path: .GlobalEnv, package:ctest, Autoloads, package:base R. Woodrow Setzer, Jr. Phone: (919) 541-0128 Experimental Toxicology Division Fax: (919) 541-5394 Pharmacokinetics Branch NHEERL MD-74; US EPA; RTP, NC 27711 -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-...