search for: rangeland

...direct R to automatically install required packages that haven't been previously installed. It doesn't appear to be working that way for me. There must be a simple solution that I am obviously missing.... Any help would be greatly appreciated! -Dan -- Dan Dalthorp, PhD USGS Forest and Rangeland Ecosystem Science Center Forest Sciences Lab, Rm 189 3200 SW Jefferson Way Corvallis, OR 97331 ph: 541-750-0953 ddalthorp at usgs.gov [[alternative HTML version deleted]]

...direct R to automatically install required packages that haven't been previously installed. It doesn't appear to be working that way for me. There must be a simple solution that I am obviously missing.... Any help would be greatly appreciated! -Dan -- Dan Dalthorp, PhD USGS Forest and Rangeland Ecosystem Science Center Forest Sciences Lab, Rm 189 3200 SW Jefferson Way Corvallis, OR 97331 ph: 541-750-0953 ddalthorp at usgs.gov [[alternative HTML version deleted]]

...Windows NT ... but the author has no plans for that." I have developed some applications in R that I would like to make available through a web interface using CGIwithR but at this time I am a Windows user. Any suggestions? With best wishes and kind regards I am Sincerely, Corey A. Moffet Rangeland Scientist USDA-ARS Northwest Watershed Research Center 800 Park Blvd, Plaza IV, Suite 105 Boise, ID 83712-7716 Voice: (208) 422-0718 FAX: (208) 334-1502

...ration. yapply and mapply don't seem to be what I want, but what I've read of them confuses me. Want to avoid for loops, unless its the only way. All help is much appreciated! Thanks. ******************************************************************* Jeff P. Hollenbeck USGS Forest and Rangeland Ecosystem Science Center 3200 SW Jefferson Way Corvallis, OR 97331 541-750-0966 [[alternative HTML version deleted]]

...I get an error message: wrong # args: should be ".25.1 index <index> ?row|col?". To which I respond, "Yes, I know I have the format wrong, but how can I make sense of THAT?" Does anyone know a simple fix? Much appreciated! -Dan -- Dan Dalthorp, PhD USGS Forest and Rangeland Ecosystem Science Center Forest Sciences Lab, Rm 189 3200 SW Jefferson Way Corvallis, OR 97331 ph: 541-750-0953 ddalthorp at usgs.gov [[alternative HTML version deleted]]

...stle.edu.au/R/e4/help/08/01/0686.html http://tolstoy.newcastle.edu.au/R/e2/help/07/06/19095.html I do not need a response, unless there is a preventative measure, but thought I would bring this to your attention. Thank you, Toby Toby Gass Graduate Degree Program in Ecology Department of Forest, Rangeland, and Watershed Stewardship Warner College of Natural Resources Colorado State University Fort Collins, CO 80523

...value value 2 2 Mar value value value and so on. I'd appreciate some code that would help accomplish this. Since I'm not an R expert, code that is somewhat transparent might be more helpful to me than the shortest possible option. Thank you. Toby Gass Department of Forest, Rangeland, and Watershed Stewardship Warner College of Natural Resources Colorado State University Fort Collins, CO 80523 Phone: 970-491-7257

...ly distributed data I have simply used >xy<-cbind(runif(100),runif(100)) However I also want to generate coordinates that are more uniformly distributed, and coordinates that are more contagiously distributed than the above. Can anyone make any suggestions Thanks. Dr Terry Beutel Rangeland Scientist Animal Sciences Department of Primary Industries and Fisheries Telephone 07 4654 4282 Facsimile 07 4654 4235 Email terry.beutel@dpi.qld.gov.au Address DPI Hood Street Charleville Q 4470 PO Box 282, Charleville Q 4470 Website www.dpi.qld.gov.au Call Centre 13 25 23 ********...

The funciton c() works differently for strings and for factors: For strings: > l = c('a', 'b') > l [1] "a" "b" For factors: > l = c(factor('a'), factor('b')) > l [1] 1 1 What should be the right technique for merging factors? -- Svetlana Eden Biostatistician II School of Medicine

...fine, but I need a 64-bit version. Is there an option to tell the compiler with Rtools to use 64-bit? Or a way to kill off the 32-bit version on my machine so I don't need to worry about it? Any guidance would be greatly appreciated! -Dan -- Dan Dalthorp, PhD Statistician USGS Forest and Rangeland Ecosystem Science Center Forest Sciences Lab, Rm 189 3200 SW Jefferson Way Corvallis, OR 97331 ph: 541-750-0953 ddalthorp@usgs.gov [[alternative HTML version deleted]]

...to go *only* to R-help, please. Martin > It doesn't appear to be working that way for me. There > must be a simple solution that I am obviously missing.... > Any help would be greatly appreciated! > -Dan > -- > Dan Dalthorp, PhD USGS Forest and Rangeland Ecosystem > Science Center Forest Sciences Lab, Rm 189 3200 SW > Jefferson Way Corvallis, OR 97331 ph: 541-750-0953 > ddalthorp at usgs.gov

Is there a function in R, which would return index of maximum value in a vector ? e.g. > v <- round(10*rnorm(8)) > v [1] 6 -3 -6 15 7 9 0 -19 > max(v) [1] 15 ??? index.max(v) ??? 4

Hello, I'm a newcomer to R so please forgive me if this is a silly question. It's that I have a linear regression: fm <- lm (x ~ y) and I want to test whether the slope of the regression is significantly less than 1. How can I do this in R? I'm also interested in comparing the slopes of two regressions: fm1 <- lm (x ~ y) fm2 <- lm (a ~ b) and asking if the slope of fm1 is

I know that there must be a cool way of doing this, but I can't think of it. Let's say I have an dataframe with NA's. > x <- data.frame(a = c(0,1,2,NA), b = c(0,NA,1,2), c = c(NA, 0, 1, 2)) > x a b c 1 0 0 NA 2 1 NA 0 3 2 1 1 4 NA 2 2 > I know it is easy to replace all the NA's with zeroes. > x[is.na(x)] <- 0 > x a b c 1 0 0 0 2 1 0 0 3 2 1

Hi, I'm on my very first steps to R and so I hope that I do not ask a really stupid questions but I did not found it via R-Search, in the FAQ or Google (BTW, the name "R" is not a really good seekiong criterion ;-) ). I have a data file containing a table that containes dates and values like date\t value1\t value2, ... 01.03.2007\t 17\t 42\t ... 02.03.2007\t 2\t 3\t ...