similar to: Error message handling

Dear kind R-experts. Does anybody have an experience to use optim function? If yes, what is the main difference between two method "BFGS" vs "L-BFGS-B"? I used "BFGS" method and got what I wanted. But when I used "L-BFGS-B" the error message said that "L-BFGS-B needs finite values of fn". So that means "BFGS" method can handle even if fn

Dear, R experts. I have two program codes, one is made by Splus and the other is made by transferring from Splus code. Because "nlminb" function in Splus is equivalent to "optim" in R, I expected to get exactly same result. But, sometime there is too large differece (greater than 2%) between two outputs. I looked two help files. According to those, in Splus, quasi-Newton

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

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

Hi Guys! Probably this is not the best place to ask, I'll try anyway... =) I've been trying to configure a Samba PDC and a Squid Porxy server with NTLM auth on the same machine but NTML_AUTH keeps complaining about: NT_STATUS_INVALID_HANDLE.... I have others machines running Squid and Authenticating against a Samba Server but on different machines, this is the first time a try both on

How can I determine the size of a text string when using the vfont option? For example: text(6, 6, "My Text String",vfont=c("sans serif", "plain")) -- 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

I help to coordinate the USEPA's R user group. We have over 500 members and our security officer has required us to update to R version 4.4.0 because of the security vulnerability to versions prior. However, we cannot download the patched version because it does not have a signed certificate and Microsoft Defender won't allow us to install it. Most of our users rely on the RStudio

Do you receive RDS objects from unknown (untrusted) sources? ?? If not - the security issue is a non-issue as I understand it. On Thu, 16 May 2024, 16:21 Vega, Ann (she/her/hers) via R-help, < r-help at r-project.org> wrote: > I help to coordinate the USEPA's R user group. We have over 500 members > and our security officer has required us to update to R version 4.4.0 >

Simple question: is it true that polygon (x, y, col=vec, border=vec, ...) will cycle through the vec colors for fills but not for the border colors when sending multiple polygons? thanks, Denis White US EPA, 200 SW 35th St, Corvallis, Oregon, 97333 USA voice: 541.754.4476, email: white.denis at epa.gov web: www.epa.gov/wed/pages/staff/white/

We are trying to implement Breiman's one standard deviation pruning rule for tree models. I have run into a problem with predict.tree. This bit of R code, a skeleton for a cross-validation process, library (tree) dat <- data.frame (matrix (runif (3*100), nrow=100, ncol=3)) a.dat <- dat[1:50,] b.dat <- dat[51:100,] a.tree <- tree (a.dat) b.pred <- predict.tree (a.tree,

I'm developing a Java module which exec's R by means of the java.lang.Runtime class. R is started from Java with code similar to p = Runtime.getRuntime().exec("/usr/bin/R --no-save"); Java then controls R by sending and receiving messages over R's STDIN and STDOUT. This works well except when plots are displayed to the screen. The windows are non interactive. They

Hi. After I run the ./configure command and run the make command, I get this message several times and the make fails. PGC-S-0056-Attempt to call non-function (/usr/include/asm/atomic.h: 94) Can anyone tell me what's going wrong here? Thanks. I'm running Linux 7.2 on a Dell Precision 530 workstation. cp Christine Parker US EPA Region 10, OEMI, IRU 206.553.2987 parker.christine@epa.gov

>> In the previous release of r, theire was a index of all functions in R. >> It was was i understand as reference. It was simple to search in this html >> page by function name or by keywords. >> Why, by god, this page is removed in the Veriosn 1.3 of R??? > Take a look at R_HOME/doc/html/function.html .... The browser-based search > engine was not on that page, but

Kevin, Maybe also look at what air quality monitoring is being done in area. https://cran.r-project.org/web/packages/RAQSAPI/vignettes/RAQSAPIvignette.html Depends what and how near, but might be something relevant there? Karl Dr Karl Ropkins Transport Studies | Environment | University of Leeds ------------------------------ Message: 2 Date: Tue, 12 Dec 2023 07:52:59 -0800 From: Bert Gunter

I am trying to use POSIX datetime objects rather than chron datetime objects but am having difficulty with POSIX in a time series. My question: Once a POSIXct vector is bound to a time series, is there a function to convert back to POSIXct? The following code demonstrates what I am trying to do. > ts(as.POSIXct(strptime(tmp,"%m/%d/%Y %H:%M:%S")),freq=1440) Time Series: Start =

Folks, I've run into trouble while writing functions that I hope will create and modify a dataframe or two. To that end I've written a toy function that simply sets a couple of variables (well, tries but fails). Searching the archives, Thomas Lumley recently explained the <<- operator, showing that it was necessary for x and y to exist prior to the function call, but I haven't

Hello guys! I am having problems getting samba 3.0.1 to compile correctly. I am currently using a SUSE 9. I have compiled a few extra things and put everything under "/opt". I am using the latest MIT Kerberos(located under /opt/kerberos), mysql 4.0.1 (located under /opt/mysql-4.0.1), openldap 2.2.4(located under /opt/openldap) I am using this config:

Summer job opportunity using Splus/R in Corvallis, Oregon: Great opportunity to gain experience in application of survey designs to natural resources. Graduate level statistician/programmer competent in the development of algorithms using the statistical software SPlus or R to work as a summer hire as part of the U.S. Environmental Protection Agency's Environmental Monitoring and Assessment

Hello, I've compiled and configured Samba 1.9.18p8 on a DEC Alpha running DEC Unix 4.0b for the express purpose of enabling a Windows NT 4.0 server running Seagate BackupExec software to be able to see my Unix filesystems as NT shares and back them up (as of this time BackupExec does not support DEC Unix clients). Test backups have worked OK, but I'm having problems restoring the

I am calling 'vmmin' several times from a C function (which is called via .C). It works very well, except for memory consumption. The cause is that vmmin allocates memory via R_alloc, and this memory is not freed as vmmin exits. Instead all the allocated memory is freed on return of the .C call. In one application, I have 2000 functions of 500 variables each to minimize. In each call to