similar to: Extracting Header From Table

I started out with a real vector b and then obtained its Fourier transform thus B<-fft(b) When I did F<-fft(B, inv=TRUE) I expected that F would be the inverse FT of B but it still has imaginary components. Should the inverse FT not be purely real? Am I missing something? Thanks, Peter.

<FONT face="Default Sans Serif, Verdana, Arial, Helvetica, sans-serif" size=2><div>I was wondering if anyone knew there are functions to do mixture modeling in R.</div><DIV>&nbsp;</DIV><DIV>Many thanks in advance,</DIV><DIV>Peter

I would like R to produce some tabulated data in a graphical output. When I say tabulated data, what I mean is a table with rows and columns. This would be useful when reading in a big file, performing some analysis on it, and then wanting to display the results as a table. Something like plot(x,...) where x is a matrix For example, the result could look (approximatly) like...

I'm attempting to use xyplot() within a for() loop to plot the relationship between a DV and a series of predictor variables, split by 2 conditioning variables. However, xyplot() does not "seem" to be recognized within the for() loop; I don't receive any error message, but nothing is plotted and a plotting device is not opened. When I use the generic function plot(),

To Whom It May Concern: I have noticed that all of the hyphens ("-") are changed to periods (".") when I try to read.table() and the headers contain "-" I am using R 2.13 on a RedHat system. Here is the situation: I have the following a tab-delimited text file saved as test.txt File1-a.txt File1-b.txt File2-a.txt File2-b.txt 1 1 2 1 1 2 3 2 1 1 2 3

When using the write.table (say for a tab delimited file) command on a matrix with Row and Columns, the column headers are always being left shifted into the column where the row numbers are being placed. One can see this when you open up the tab delimited file in excel. Is there a better command for this, or is this supposed to be a 'feature'. Peter

Dear all: I have a tab delimited file as following AGE WEIGHT PROTEIN ........ 6 20 3 ........ 8 39 4 ........ I tried to read it as following: data <- read.table(file,sep="\t",header=T); but there is only column for the data after reading in,: dim(data); [1] 200 1 the column name is "AGE...WEIGHT...........PROTEIN...." Any quick suggestion will be appreciated.

Full_Name: Emmanuel Paradis Version: 2.1.1 OS: Linux Submission from: (NULL) (193.49.41.105) read.fwf(..., header = TRUE) does not work properly since: 1/ the original header is printed on the console and not in FILE; 2/ the different 'parts' of the header should be separated with tabs to work with the call to read.table. Here is a suggested fix for src/library/utils/R/read.fwf.R:

Hi, I am trying to read a tab-delimited file that has trailing tab delimiters. It's a simple file with two legitimate fields. I'm using the first as row.names, and the second should be the only column in the resulting data frame. Initially, R was filling the last column with NA's, but I was able to stop that by setting

I?ve been struggling with seemingly ?corrupt? data.frames for a few days, and believe I?ve narrowed the problem down to some odd behaviour from read.table I receive a tab delimited file from an external provider where strings are encoded as =?content?. Not sure why, perhaps as most users open it in Excel. My specific issue is that trailing spaces in any of the strings are causing strange results

Dear List, I have an ascii text file with data I'd like to extract. Example: Year Built: 1873 Gross Building Area: 578 sq ft Total Rooms: 6 Living Area: 578 sq ft There is a lot of data I'd like to ignore in each record, so I'm hoping there is a way to use strings as delimiters to get the data I want (e.g. tell R to take data between "Built:" and "Gross" -

Hi, I would like to generate an LLVM bitcode file that contains all the types and functions declared in a header file. For example, the following code should make the llvm compiler put all type information contained in stdio.h in the resulting bitcode file. #include <stdio.h> int main() { return 0; } Unfortunately, when compiled with "llvm-gcc -g -emit-llvm -c test.c", the

Hello Vitaly, Clang supports LLVM Bitcode formatted precompiled headers if that is what you are looking for. LLVM-GCC might be a different story though. Also note that these headers will be different from one operating system to the next. If you're looking for something portable, test out my wrapper at http://sourceforge.net/projects/llvmlibc/ in the SVN repo. --Sam ----- Original

Hello, all. I am working on a project with a large (~350Mb, about 5800 rows) insurance claims dataset. It was supplied in a tilde(~)-delimited format. I imported it into a data frame in R by setting memory.limit to maximum (4Gb) for my computer and using read.table. The resulting data frame had 10 bad rows. The errors appear due to read.table missing delimiter characters, with multiple data

Hello, I'm receiving an error on attempting to use the read.table() function to read in data from a tab-delimited file. The file has more than 60,000 rows with 94 tab-delimited columns. However, the error occurs on row 3 of the file: > wl <-read.table("sr003lines.tab", header=T, sep="\t") Error in scan(file, what, nmax, sep, dec, quote, skip, nlines, na.strings, :

Hello everybody, I'm a new user and I'm trying to use read.table with a tab delimited file but the system tells me (i) that there are more columns than column names, and (ii) that headers and col.names are of different lengths. I have already checked my variable names and there's no blank spaces. However, some variables have quite long names such as

Dear All, I have a data frame of vectors of publication names such as 'pub': pub1 <- c('Brown DK, Santos R, Rome DF, Don Juan X') pub2 <- c('Benigni D') pub3 <- c('Arstra SD, Van den Hoops DD, lamarque D') pub <- rbind(pub1, pub2, pub3) I would like to construct a dataframe with only author's last name and each last name in columns and the

I'm trying to get started with R, on Ubuntu. I worked through the tutorial, and have made a small tab-delimited subset of my data to try out (10 cases with about a dozens variables). But I can't seem to figure out how to actually refer to variables. I presume I'm missing something very simple, but quite a while searching the doc and the FAQ haven't helped me. I'm loading the

Dear All, I've been using R for windows for a while, without too many problems. However, I'm forced to use the MAC OS system for teaching, because our teaching labs are mac only (not my idea!!). I have a very basic problem, but one that doesn't appear on the FAQs. I simply want to import data from a spreadsheet. I'm using exactly what works fine on Windows, namely: 1 save

Dear R useRs, I have big (23000 rows), vertical bar delimited file: e.g. A00001|Text a,Text b, Text c|345 A00002|Text bla|456 ... .. . Try using A <- read.table('filename.txt', header=FALSE,sep='\|') process stop at line 11975 with warning message: number of items read is not a multiple of the number of columns I have no problems with processing similar file, which is