similar to: Item analysis

I want to make a log-log plot with a regression line, but I can't figure out what I'm doing wrong. What I'm trying is: plot(mass,area, log="xy", pch=as.numeric(food)) abline(lm(mass~area)) or plot(mass,area, log="xy", pch=as.numeric(food)) islands$logmass <- log(mass) islands$logarea <- log(area) attach(islands) abline(lm(logmass~logarea)) But that does

Hi, we had a broken heating system (in the floor above us) resulting in a water burst .... my office looks like if a bomb has exploded ... Currently our server is up and running again (it was down over the weekend) ... but we will move out of the devastated rooms and hence the CARN master might be down one or more times during the rest of the week. We'll try to keep the down times as short

Hi, we had a broken heating system (in the floor above us) resulting in a water burst .... my office looks like if a bomb has exploded ... Currently our server is up and running again (it was down over the weekend) ... but we will move out of the devastated rooms and hence the CARN master might be down one or more times during the rest of the week. We'll try to keep the down times as short

Hi all, I have the next problem: I have a matrix with size 8,000,000x18. My personal computer...blocks...so I have cut my original file into 100 different file. I have written a function that should be run on each of this file. So imagine I need to read data from q1 to q100 file data<-read.table("q1.txt",sep="") and each time I read 1 file execute my personal function

Hi all, I´m new using Access. I see that many things that you can do on Access you can do on CRAN R but not on contrary. My question is: Is there any manual with examples comparing how to do data base analysis on access and making the same on CRAN R? Imagine I want to compare two columns "Name" of two different data bases. I want to see if there are "identical" names on both

Is there any R package that can help me with digging out the maxima of a 1-D trajectory ? I have 975 1-D curves. They are only known as time series. That is a set of points ordered with respect to time. Some curves exhibit one only peak. Others have two peaks of different height. We wish to find the number of peaks and their position along the time axis. Apparently it's a trivial problem

Hi all if I plot a graph on R, I press on the plot Export/Save Plot as Image.... I change name on "File name:" I select Directory....Bibliotecas\Documentos And select Width 800 and Height 800 And finally save in format JPEG It is posible to "type" code so that I can run my function and it is not necessary to make it manually? Thanks in advance. [[alternative HTML

Hi all, I´m using the windows writting pad (not Notepad the simplest version). I think there should be greater and helping note pads to help programming. Can you suggest one? Many thanks¡¡¡¡ [[alternative HTML version deleted]]

Hi all, I want to order a series that is included on the second column in MCT.csv. I do but R doesn?t order, could be because is a csv? I have prove MCT<-read.csv("MCT.csv") a<-order(MCTor[,2],2,decreasing = FALSE) a<-order(MCTor[,2],1,decreasing = FALSE) or the same with sort but didn?t worked. It is suposed that a will have the ordered on ascending or descending

Hi, I want to plot this matrix (I attach the data), it is suposed that each column is a different time series. If I do g<-read.table("dataADF.txt", header=F) and plot(g[,1],type="l") it plots the first column plot if I want in a unique graph each colums of dataA, all in one. How should I proceed?There is a direct pre-defined code? And If I wanted a plot by each

Hi all, I´m re-starting (as my name indicates) my little knowlegde of CRAN R. I made this function time before but I don´t know where is the error because nothing appears as an error but the histogram plot doesn´t appear. Should I install some special library to run sapply? pru<-function(){ randz<-matrix(rnorm(200000),100,2000) H<-matrix(0,100,2000) for (j in 2:2000){ for (i in

Hi all, I have a function written by me that read a matrix (data frame) from a txt with 4 million of rows and 13 columns. The think is my function works with an input matrix of 100x13 and now I tried to execute my function with the big "input file" and it is running form the moment two hours... There is a way to know (how much time could it cost?) The second question is... I want

Hi all, I´m trying to use write function to save the output of a program (my constructed "H" matrix) randz<-matrix(rnorm(1000000),500,2000) H<-matrix(0,500,2000) H[1,]<-randz[1,] for (j in 1:2000){ for (i in 2:500){ if(i<251) H[i,j]<-0.6*H[i-1,j]+randz[i,j] else H[i,j]<-H[i-1,j]+randz[i,j] }} write(H, file = "datad.txt",2000) If I ommit the 2000 on

Hi all, I have a data matrix likein "input.txt" 8 9 2 5 4 5 8 5 6 6 8 9 2 8 9 2 8 9 2 1 8 9 2 5 4 5 8 5 6 4 8 9 2 5 4 5 8 5 6 6 8 9 2 8 9 2 8 9 2 1 8 9 2 5 4 5 8 9 2 2 In this example will be an 6x10 matrix (or data frame) I want to detect how many times in a row appears this combination 8 follewd by 9 followed by 2, and create a new matrix with only this number of occurs then

Hi all, I have a matrix like this: 188556644 225588666 558888555 I try to read the table using read table but if I put sep="" I have seen it expects a white space, is there a "sep" option to read this matrix so each single number is a position of the matrix You see this matrix would be an 3x9 matrix I tried other option but also didn´t worked. If sep = "" (the

Dear all, my colleagues and I have to write some R code for some of our projects. I would like to ask you help to organize us a little. a. Do you know if there is any system that can convert our R scripts to html pages with some nice dependency graphs (which functions calls which). b. Could you please suggest me an easy way to exchange the R code with my colleagues. I know about these version

Hi all, I´m trying to convert as a data frame (with format "date") this copied excel column of dates (exposed below), I have tried to save them in a txt file tfr<-read.table("tfra.txt") tfr<-data.frame(tfr) I have tried several things, as date, so on, but always error. And it makes Error en as.Date.default(tfr, "%m/%d/%y") : do not know how to convert

The following packages have been contributed to CRAN by Thomas Lumley: integrate-1.0.tar.gz: S function and supporting C and Fortran code for adaptive quadrature. The underlyling fortran code is purported to work in from 2 to 20 dimensions. S original by Michael Meyer (mikem at andrew.cmu.edu). R port by Thomas Lumley <thomas at biostat.washington.edu>. [1997/07/10]

The following packages have been contributed to CRAN by Thomas Lumley: integrate-1.0.tar.gz: S function and supporting C and Fortran code for adaptive quadrature. The underlyling fortran code is purported to work in from 2 to 20 dimensions. S original by Michael Meyer (mikem at andrew.cmu.edu). R port by Thomas Lumley <thomas at biostat.washington.edu>. [1997/07/10]

Hi all, Have any of you instaled R on a Tablet, in this case, which Tablet. My family wants me to gift a Tablet but I suposse R can not be instaled on a Tablet. And my few "free" time I pass mainly trying to "improve" in R. Can yoy tell me, if there are, wich Tablets should be instaled? [[alternative HTML version deleted]]