similar to: Data size

hello , I am new user in R . I have datafile (class = data.frame) which has 825 columns with unique column name i want extract 200 selected column from datafile how can I do this? my datafile look like.. Mi RBN RBF nDB nX 3 2.6225979 0.53132756 -0.80599902 -1.4471864 -0.5705269 10 0.4818746 -1.72143092 -2.19579027 2.0118824 -0.5705269 12 2.8519611

Hi, everyone, I am a newbie on R. Now I want to do image pixel classification by random forest. But I has not a clear understanding on random forest. Here is some question: As for an image, for example its size is 512x512 and has only one variable -- gray level. The histogram of the image looks like mixture Gaussian Model, say Gauss distribution (u1,sigma1), (u2,sigma2),(u3,sigma3). And a

Hi, We've written an R program to conduct a series of analyses on a data file that is a comma separated value file. At one time it worked, but every since having down loaded the new version of R, I'm getting the following: Cannot open c:windowsdesktopslope.csv What I've asked the program to do is to open a datafile using the following: DataFile<-

dear: when I read a Excel file(exp-11),The R project give me a error ,Just like this: ??'datafile' > write.foreign("exp-11.xls") ???list(df = df, datafile = datafile, codefile = codefile) : ??'datafile' > write.foreign("exp-11.xls") ???list(df = df, datafile = datafile, codefile = codefile) : ??'datafile' >

I figured out something new that I would like to see if I can do this more easy with R then Excel. I have these huge files with data. For example: DataFile.csv ID Name log2 1 Fantasy 5.651 2 New 7.60518 3 Finding 8.9532 4 Looeka -0.248652 5 Vani 0.3548 With like header1: ID, header 2: Name, header 3: log2 Now I need to get the $ID out who have a &log2 value higher then 7. I

Hi, I have a dataset saved in *.csv format, that contains 13 columns (the first column being the title name and the rest experiments) and about 2500 rows. Not all columns in the row have data in it i.e for eg BS00,-0.084,0.0136,-0.1569,-0.6484,1.103,1.7859,0.40287,0.5368,0.08461,-0.1935,-0.147974,0.30685 BS01,0.491270283,0.875826172,,,,,,,,,,

Hi folks, OS - Ubuntu 10.04 On R I create a datafile named "data". I can evoke it on R with; > data On R Commander Data -> Active data set -> Select active data set -> (data) OK only one data set there "data" -> View data set I can read it -> Edit data set showing 25 rows of data. Clicking the box shows a thick border around it. But I couldn't

All, I currently have a dataset with a variety of different columns, let's say, A,B,C, and D. I'd like to run an R script that graphs only certain rows of the dataset based on what's in column A. In awk, it'd be something like: awk ' { if(A==5 && B ==6) print $0 } ' datafile | command or file Since I have just begun using R, I am unsure if awk is compatible in R

Dear list: A datafile was sent to me that is very large (92890 x 1620) and is *very* sparse. Instead of leaving the entries with missing data blank, each cell with missing data contains a dot (.) The data are binary in almost all columns, with only a few columns containing whole numbers, which I believe requires 2 bytes for the binary and 4 for the others. So, by my calculations (assuming 4

Dear all, I just found that some of the packages are not able to load any more, after I installed R2.0.1 in my Mac, it even affects my old R1.8 installs. It gives me errors when I load packages that contains "myEnv" settings. such as: RMySQL, DBI, Rggobi, etc. But others that does not require "myENV" is all right, like tcltk that only calls the c functions. The errors

After reading this article: http://www.theregister.co.uk/2005/08/31/blocking_chinese_ip_addresses/ I got to thinking that there is really no reason for *any* traffic to hit my servers that comes from anywhere outside North America. So I wrote the perl script at the end of this posting to extract selected IP ranges posted at iana.org and convert them into iptables rules blocking any traffic

The script below successfully produces a biplot of the data but the 'site names' (rows) and the names of the 'response variables' (columns) are shown as simple numerals (rather than the column and row names). How might I 'enforce' the use of the row/column names used in the datafile (section of datafile shown below)? Can anyone help, please? Section of datafile sample a b

Dear R folks, I have several data sets I want to process automatically using R. I found littler [1] and thought this will do the trick. 1. Read in data file to a data frame using `scan()`. 2. Do linear regression. 3. Write the data and the coefficients back to a file. #!/usr/bin/env r if (is.null(argv) | length(argv)!=1) { cat("Usage:

Dear R-devel, I've made some potential extensions to writeForeignSAS in 'foreign' that I wanted to pass along if anyone is interested. I've attached the diff -u output against the version found in foreign_0.8-15 and an .R file with my changes. (In this .R file, the function is named writeForeignSAS7 to simplify testing/comparisons.) I've tried to alter the current

Hi all, I''m trying to work with hiera database in puppet and i''m having problems using %{variables} because they don''t get the values and i don''t know why. file hiera.yaml: cat hiera.yaml --- :backends: - yaml - puppet :hierarchy:- nodes/%{domain}/%{hostname} - os/%{operatingsystem}/%{operatingsystemrelease} -

All, I have a data file with 56 entries that looks like this: City State JanTemp Lat Long Mobile, AL 44 31.2 88.5 Montgomery, AL 38 32.9 86.8 Phoenix, AZ 35 33.6 112.5 Little Rock, AR 31 35.4 92.8 Los Angeles, CA 47 34.3 118.7 San Francisco, CA 42 38.4 123.0 I would like to "read" this data into a dataframe. Is it possible to do without editing the datafile? D.

Dear R users, Thanks in advance. I am Deb, Statistician at NSW Department of Commerce, Sydney. I am using R 2.8.1 on Windows XP. I like to save Trellis Plots on A3 size paper (Portrait and Landscape). Currently, I am using the following command to save a Trellis Plot in pdf [This is an example code]: pdf("D:/Analysis/test.pdf") dataFile <- expand.grid(xo=

The code bekow works so this is why I didn't include the data to reproduce it. The loops about 500 times and each time, a zoo object with 1400 rows and 4 columns gets created. ( the rows represent minutes so each file is one day worth of data). Inside the loop, I keep rbinding the newly created zoo object to the current zoo object so that it gets bigger and bigger over time. Eventually,

On Mon, 2007-05-14 at 23:41 +0200, vax9000 at gmail.com wrote: > Full_Name: vax, 9000 > Version: 2.4.0, 2.2.1 > OS: 2.4.0: Mac OS X; 2.2.1: Linux > Submission from: (NULL) (192.35.79.70) > > > To reproduce this bug, first go to the website "http://llmpp.nih.gov/DLBCL/" and > download the 14.8M data set "Web Figure 1 Data file". The direct link is >

Hi,? I'm trying to obtain a table of coefficients and confidence intervals from a logistic regression analysis in R. My code is as follows: # read in csv file datafile<-read.csv("file.csv", row.names=1) # read in the variable list varlist<-names(datafile)[66:180] models<-lapply(varlist, function(x) {glm(substitute(outcome ~ i, list(i=as.name(x))), data=datafile, family =