similar to: add=TRUE function not working

Hello, (Apologies for length, wanted to get all the relevant detail in that I know of). I've been having a lot of trouble with some code for an inventory analysis problem I was doing, and finally came to the conclusion that it appears that choose() is returning incorrect values. Specifically: ------------- Browse[1]> nn [1] 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3

hello all, I have a data frame and I want to create a column which assigns a letter based upon the value in another column. The data column has velocities ranging from 0 to 1000. So for example, for velocities between 0 and 300 I'd like to assign the letter "A" in the new column, for 300-600, "B" and so on and so forth. How would I do this? Thank you very much! Mehdi

R help list subscribers, I am a new user of R. I am attempting to use R to explore a set of equations specifying the dynamics of a three trophic level food chain. I have put together this code for the function that is to be evaluted by LSODA. My equations Rprime, Cprime, and Pprime are meant to describe the actual equation of the derivative. When I run LSODA, I do not get the output that

Hello, I'd like to use the add=TRUE parameter to add a second data line (series) to an existing plot, but R is giving me an error (see below). This code: > rap<-plot(aspen_sort,ylim=c(1,10000),log="y") ...produces the plot to which I'd like to add the second line. But this code: > rap<-plot(pine_sort,add = TRUE) ...produces this error: Warning messages: 1: In

Hi All, After a lengthy battle just to get the package installed, I am not able to actually use Rgraphviz to generate any plots. I tried just using the sample code in the documentation (http://www2.warwick.ac.uk/fac/sci/moac/people/students/peter_cock/r/rgraphviz/) and I get the following: *> > library(Rgraphviz) > test.matrix<-matrix(rep(c(0,1,0,0), 9), ncol=6, nrow=6) >

Hello everyone, I have two data frames. One is a vector about 780 rows long consisting of lat long data of 780 station locations. The other table was previously a shape file which I have converted into a data frame object of lat long coordinates and attribute data. What I want to do is combine the two--assigning attribute data to each station. The problem is, however, that those station

Full_Name: Joseph Amuah Version: 2.7.0 (2008-04-22) OS: Windows Submission from: (NULL) (205.207.78.4) I used the plot function to create some graphs but wanted to add soem restrictions. A set of warning were produced even though the plot worked fine. Can these warnings be cleaned up? Here is an example: *************************************** > plot(xx$month, xx$log10RR, xlab="",

Hello everyone, Merging two dataframes should be easy. However when I try to merge, R doesn't recognize identical values, even if I am doing it by values that have no decimals. willclayong: vs30 LON LAT Net X wills.cat wills.vs30 clahan.cat clahanvs30 PolyID.wills PolyID.clahan tif.cat STA ELEVATION tif.vs30 1 338.539 -3849590 4319319 <NA> 2 D 301

Hi, Just to signal that when I want to plot POSIXct variable on x using format within plot(), I get what I want on the plot but with a number of warnings: > plot(y~x,format="%y-%m") Warning messages: 1: "format" is not a graphical parameter in: plot.window(xlim, ylim, log, asp, ...) 2: "format" is not a graphical parameter in: plot.xy(xy, type, pch, lty,

Hi all, Sorry if this is documented somewhere, but trying to search and google for ways to alter my "..." argument is having me chasing my tail. Is there someway that I can manipulate the elements in "..."? Specifically I'd like to use certain vars in "...", then remove them from "..." and pass the rest of "..." to another function.

I imported the attached tiff file and converted the coordinate system to long lat and graphed it: californiatiff<- readGDAL("california1.tif") proj4string(californiatiff) > rasterprojection <- spTransform(californiatiff, CRS("+proj=longlat") however, when using the plot command for rasterprojection, I get a blob. I can see the outline of the state of california and

Hi, I want to draw several pictures on one plot and do as follows: xy<-matrix(rnorm(100,100,10),50) op <- par(mfrow = c(2, 2), pty = "s") plot(xy,ann=F);plot(xy,ann=F);plot(xy,ann=F);plot(xy,ann=F) par(op) What I need now is to set the size of the pictures within this plot since there is too much free space among the pictures, making the plot look not that pretty. How can I do

Dear all, I try to first link data in a data.frame() to a (polygon) read.shape() object and then to plot a polygon map showing the data in the data.frame. The first linking is called "link" in ArcView and "relate" in ArcMap. I use the code shown below, though without success. Help with this would be greatly appreciated. Thanks! Tord require(maptools) # Read shape file

Hi, I have been having very good results using plot.zoo to chart time series data. But I have three questions about plot.zoo and I am wondering if anyone knows the answers. (1) when I tried to use semi-log scale, via log="y", R issued a warning, although it looked like plot.zoo plotted in semi-log scale anyway: Warning message: In plot.xy(xy.coords(x, y), type = type, ...) :

Dear Friends, Yesterday I posed a question to the list concerning the possibility of doing animation examples in R. Here is an example S-Plus (4.5 for Windows ) that I wrote to illustrate my problem. If I try this in R (comment out the graphsheet and guilocator calls) I don't see my results until after the function has iterated through the 100 trials. I would like to plot each iteration.

Dear list!   I would like to write a function to transform matrix, which is input argument of a written function. It is easy with new matrix (see below), but my idea is to transform input argument (matrix) of function without any additional matrixes. Here is an example: fun1 <- function(xy) { xy <- cbind(xy[,1], xy[,2], xy[,1] + xy[,2]) return(xy) }   df1 <- matrix(c(1,2,3,1,2,3), ncol =

I have a data.frame named "df". The dput of df is at the bottom of this e-mail. What I'd like to do is replace the "n/a " values with NA. On Mac OSX, it works to do this: df[df == "n/a"] <- NA However, it does not work on Ubuntu. See below. Thanks in advance, Garrett > x <- df[27, 4] # complete data.frame dput is below > dput(x) "n/a?"

Hi list! An operation that I often need is splicing two vectors: > splice(1:3, 4:6) [1] 1 4 2 5 3 6 For numeric vectors I use this hack: splice <- function(x, y) { xy <- cbind(x, y) xy <- t(xy) dim(xy) <- length(x) * 2 return(xy) } So far, so good (?). But I also need splicing for factors and I tried this: splice <- function(x, y) { xy <-

Hi the list, One of my package has an (other) error detected by memtest that I do not manage to understand. Here is the message that I get from Memtest --- 8< ---------------- > try(choice(cld1)) Error in switch(EXPR = choix, Up = { : EXPR must be a length 1 vector --- 8< ---------------- The choice function does call the choiceChangeParam function, which is: --- 8<

Dear all, This problem came up initially while debugging a function, but it seems to be a more general problem of R. I hope I'm wrong, but I can't find another explanation. Let me illustrate with the raster package. For an object "RasterLayer" (which inherits from Raster), there is a method xyValues defined with the signature