similar to: Deleting the last value of a vector

Displaying 20 results from an estimated 520 matches similar to: "Deleting the last value of a vector"

2012 Feb 28
7
indexing??
Hello All, My algorithm as follows; y <- c(1,1,1,0,0,1,0,1,0,0) x <- c(1,0,0,1,1,0,0,1,1,0) n <- length(x) t <- matrix(cbind(y,x), ncol=2) z = x+y for(j in 1:length(x)) { out <- vector("list", ) for(i in 1:10) { t.s <- t[sample(n,n,replace=T),] y.s <- t.s[,1] x.s <- t.s[,2] z.s <- y.s+x.s out[[i]] <- list(ff <- (z.s), finding=any (y.s==y[j])) kk
2011 May 06
2
no connection point for {33ad4f92-6699-11cf-b70c-00aa0060d39
Trying to run a certain game called Empyrean Challenge. The program is written in VB apparently. In the past, the program ran fine by installing via winetricks dcom98. Well, that has been removed from dcom98. Without dcom98, I get a Windows runtime error 438. The relevant message on the console, near as I can tell, is: fixme:ole:OLEPictureImpl_FindConnectionPoint no connection point for
2011 Apr 17
2
Repeating a function
Hello all, I currently have this function: drift <-function(p0=0.4,N=40,ngen=55){ p = p0 for( i in 1:ngen){ p = rbinom(1,2*N,p)/(2*N) } return( p ) } I want to repeat it 1000 times, then do some analysis on the results. I've tried using the rep() function, but that only gives me repeats of the first value of p. How can I get 1000 values of p for different iterations of the
2011 Apr 23
1
How to delete an entire row, if a specific colum has the value of "#VALUE!"
I am importing CSV data with thousands of rows, if any row contains an error from excel, the whole program crashes, so i need to delete all rows with the value of #VALUE!, all other values are non-numeric... I've tried a bunch of strategies, but nothing seems to work. Thanks ahead of time guys, Best, Cody -- View this message in context:
2012 Jun 07
3
conditional statement to replace values in dataframe with NA
Hello and thanks for helping. #some data L3 <- LETTERS[1:3] dat1 <- data.frame(cbind(x=1, y=rep(1:3,2), fac=sample(L3, 6, replace=TRUE))) #When x==1 and y==1 I want to replace the 1 values with NA #I can select the rows I want: dat2<-subset(dat1,x==1 & y==1) #replace the 1 with NA dat2$x<-rep(NA,nrow(dat2) dat2$y<-rep(NA,nrow(dat2) #select the other rows and rbind
2010 Aug 25
4
degree C symbol in a function
Hello help, I have changed around some graphing code and made it into a function. Previously they y label of the axis was inserted as text in its own layout box. text(1,1, expression(~degree~C),cex=1) This worked great and resulted in the symbol for degree. In the function, I have changed it so: text(1,1,paste(b_unit),cex=1) and b_unit<-expression(~degree~C) This now inserts ~degree~C
2011 Jan 27
2
identifying when one element of a row has a positive number
Hello, I am not sure where to begin with this problem or what to search for in r-help. I just don't know what to call this. If I have 5 columns, the first 2 are the x,y, locations and the last three are variables about those locations. x<-seq(1860,1950,by=10) y<-seq(-290,-200,by=10) ANN<-c(3,0,0,0,1,0,1,1,0,0) CTA<-c(0,1,0,0,0,0,1,0,0,2) GLM<-c(0,0,2,0,0,0,0,1,0,0)
2010 Oct 26
4
divide column in a dataframe based on a character
Hello, If I have a dataframe: example(data.frame) zz<-c("aa_bb","bb_cc","cc_dd","dd_ee","ee_ff","ff_gg","gg_hh","ii_jj","jj_kk","kk_ll") ddd <- cbind(dd, group = zz) and I want to divide the column named group by the "_", how would I do this? so instead of the first row being x
2010 Oct 26
2
discerning plot dots using colors
Dear List, I am using the command plot to present the relationship between bird richness (Y axis) and elevation (X axis). However, I would like to observe the distributions of bird richness in different administrative areas (A, B, C, …., G) in this plot. For example, the dots in area A might fall in the upper right part of the plot, while those in area B might appear in the middle of
2011 Jul 31
2
Legend for 2 plots on same screen
Hello, I have two plots on the same screen. I use the command par(mfrow=c(1,2)) in order to do this. When I try to make a legend for both plots, it only puts the legend in the plot on the right side. If I would like a legend that is outside of both of the plots, how would I do this? Thanks [[alternative HTML version deleted]]
2013 Jul 23
2
downloading web content
Hello, I am trying to use R to download a bunch of .csv files such as: http://biocache.ala.org.au/ws/occurrences/download?q=Banksia+ericifolia I have tried the following and neither work: a<- getURL(" http://biocache.ala.org.au/ws/occurrences/download?q=Banksia+ericifolia") Error in curlPerform(curl = curl, .opts = opts, .encoding = .encoding) : embedded nul in string: and
2010 May 24
2
excluding on element from a list
Dear List, I am making a list of all the files in a folder and I want to exclude one file called "proj.current". This is the 31st file in a folder. Currently I use the command: tdirs <- list.files(pattern="proj.")[-31] However I would like to exclude it based on its name and not the position. Any advice would be useful. Thanks, Daisy Daisy Englert Duursma Room
2010 Apr 19
2
selecting rows based on number that occurs after letter
Hello, I am trying to cycle through a csv and make some summary statistics. I need to select rows based on the number in the row name that comes after the letter 'y'. For example, ? BA1y1 would equal 1, ?C3A2r3y1 would equal 1 and ?MA3r3y1r3 would equal 1. I currently have my code ?cycling through by the 5th character but my rows have variable length and the y can occur in several
2010 May 18
1
issues with R Library on a Server
Hello, I am a bit over my head on this issue. My colleagues and I are running R off of our server. We all have admin rights and prior to yesterday we all had our own libraries. Our main system administrator advised us that we should have a shared library. So, I am trying to do this. I have downloaded the latest version of R and installed it on the main drive of our server in the "Program
2010 Sep 30
1
Unix batch to different nodes
Hello, I am struggling with computing nodes in Unix. I have the use of a Unix server that has 30 nodes and I would like to batch scripts. Here is an R example that results in 72 repeated tasks based on the 2 loops. If I wanted to send these out to the different nodes, each node has 1 task and the remaining 42 tasks are put in a queue, what would I do? #Example:
2011 Jun 29
2
Indexing to Insert values from a dataframe into a matrix
Hello, I think this is a simple problem but I am not coming up with a simple solution. I think it just an indexing problem. I can easily replace values in a matrix from a dataframe when the dataframe has row and column numbers. In the example below I use row and column names and I can not get it to work #make a matrix where rows and columns are the lat and long for a bounding box of Australia
2011 Feb 07
1
multiple imputation manually
Hi, I want to impute the missing values in my data set multiple times, and then combine the results (like multiple imputation, but manually) to get a mean of the parameter(s) from the multiple imputations. Does anyone know how to do this? I have the following script: y1 <- rnorm(20,0,3) y2 <- rnorm(20,3,3) y3 <- rnorm(20,3,3) y4 <- rnorm(20,6,3) y <- c(y1,y2,y3,y4) x1 <-
2006 Mar 01
0
Prevent deleting/moving of primary directory, but allow deleting/moving of subdirectories by users
Greetings - In general terms I would like to prevent users from deleting or moving a primary directory within a share, but allow users to create / delete / move subdirectories and files that reside under these directories. My reason for needing this type of setup is to prevent an accidental deletion of a common directory and to maintain a planned directory structure at the top level of the
2007 Dec 01
1
Deleting a user?
Hello, I've compiled linux-ha heartbeat into an RPM but when I try to install it (after "yum erase heartbeat*") it complains that the user hacluster still exists: # rpm -ivh heartbeat-2.1.2-1.x86_64.rpm Preparing... ########################################### [100%] useradd: user hacluster exists error: %pre(heartbeat-2.1.2-1.x86_64) scriptlet failed, exit status 9
2007 Nov 29
1
Deleting files from dump?
Is it possible to delete a file from dump? I saved it in one dump archive, and want to save space by deleting it from the others. Thanks. Scott