similar to: How to make own function load automatically on startup

I wonder how one in R can fit a 3rd degree polynomial to some data? Say the data is: y <- c(15.51, 12.44, 31.5, 21.5, 17.89, 27.09, 15.02, 13.43, 18.18, 11.32) x <- seq(3.75, 6, 0.25) And resulting degrees of polynomial are: 5.8007 -91.6339 472.1726 -774.2584 THanks in advance! -- Jonas Malmros Stockholm University Stockholm, Sweden

I have a data frame named "database" with panel data, a little piece of which looks like this: Symbol Name Trial Factor1 Factor2 External 1 548140 A 1 -3.87 -0.32 0.01 2 547400 B 1 12.11 -0.68 0.40 3 547173 C 1

Hello, I have a vector of names, say : names <- c("Factor 1", "Factor 2", Factor 3") I am creating a dataframe and I want the column names to be mixed like this: "Factor 1" " Sign Factor 1" "Factor 2" "Sign Factor 2" "Factor 3" "Sign Factor 3" How can I automate the creation of such a mixed vector? I tried

Bill, Alberto, Gabor, Thank you for answering my question. Now I learned about outer() function. That was a straightforward example. But what if I had a matrix, where the last column was filled with values first (again, a for loop), and the rest was filled by using a double loop? OVal <- matrix(0, n+1, n+1) for(i in 0:n){ OVal[i+1, n+1] <- max(Val[i+1, n+1]-K, 0) } for(i in seq(n,1,

Dear R users, I have a huge database and I need to adjust it somewhat. Here is a very little cut out from database: CODE NAME DATE DATA1 4813 ADVANCED TELECOM 1987 0.013 3845 ADVANCED THERAPEUTIC SYS LTD 1987 10.1 3845 ADVANCED THERAPEUTIC SYS LTD 1989 2.463 3845 ADVANCED THERAPEUTIC SYS LTD 1988 1.563 2836 ADVANCED TISSUE

Hello, I am using textplot function in gplots package to put some model output inside a PDF file, but it does not seem to work properly with PDF. I am doing follwing: pdf(file="C:/...", paper="a4", width=8, height=12) .model <- lm(.model.formula, data=database) textplot(capture.output(summary(.model)), valign="top", halign="left") I am getting these

Hi, i'm trying to read some data from excel files but it seems that neither xlsReadWrite nor sqlFetch (RODBC) doesn't like the format (Excel 5.0). When i open the file in Excel and save it in a new format Excel 97 -2003 everything works fine. Is it possible to use ODBC connection to open old format files, or i guess i will have to open and save every file in Excel in new format, which

Hi every one ,,,, i have problem in R program to import the data from excel , I have done the following: 1. install.packages("xlsReadWrite") 2. library(xlsReadWrite) 3. z<- read.xls("ReadXls",LTS,colNames=FALSE,sheet,type,form,rowNames=FALSE) and i got on the result: Error in read.xls("ReadXls", LTS, colNames = FALSE, rowNames = FALSE) : object

Hi friends, I have installed R 2.4.0 in my pc. I have a file xls entitled dali following this directory:c://programfiles//R 2.4.0. Recently I have installed xlsreadwrite 1.3.2. but , when I wrote the following lines: >library(xlsReadWrite) >read.xls( file, colNames = TRUE, sheet = 1, type = "data.frame", from = 1, colClasses = NA ) I obtained from R console the following messages:

Dear community, I have now taken my R-file from lectures and intend to use it at home, but have a problem reading the Data from the file. I have installed and loaded the Package xlsReadWrite so far. I have also "Changed directory". This is what I have entered daten=read.xls("Daten A2") This is my Error-Message in its German original: Fehler in .Call("ReadXls",

I'm an R newbie and had a question about the read.xls function. I've heard that this is often not a reliable function to use for importing data. However, I have created numerous xls files which contain information about voter turnout and macroeconomic indicators in India. I'm writing a paper on the relationship between economic growth and voter turnout. This is the command I use:

Dear R experts, I am trying to import some data from some Excle files into R. My Excle file contains about 50 sheets. One solution I can think about is to convert my Excle file into csv file first and then load data into R using 'read.csv'. But it seems to me that 'read.csv' only supports reading one sheet (or 'one file') each time, so that seems I have to create 50 csv

Hello, My response variable seems to be distributed according to Student t with df=4. I have 320 observations and about 20 variables. I am wondering whether there is a way to fit glm with Student t for error distribution. Student t is not one of the family choices in glm function. How should I proceed to fit glm with Student t? I know that Student t is the Inverse Gamma with shape parameter

Does anyone have a work-around for a failed installation of this package? > library(xlsReadWrite) xlsReadWrite version (cran shlib) Copyright (C) 2010 Hans-Peter Suter, Treetron, Switzerland. !! Your installation contains the cran placeholder shlib (dll/so). Please get the regular shlib (420 KB) by executing the following command: xls.getshlib() However, the xls.getshlib() command fails

Dear all, I installed xlsReadWrite package under Windows 7, and got error when trying to run xls.getshlib(). Please, see the errors below: > require(xlsReadWrite) Loading required package: xlsReadWrite xlsReadWrite version (cran shlib) Copyright (C) 2010 Hans-Peter Suter, Treetron, Switzerland. !! Your installation contains the cran placeholder shlib (dll/so). Please get the regular shlib

Dear List, I am trying to solve a problem: I have approximately 100 Excel spreadsheets each with approximately 4 sheet each that I would like to download and import in R for analysis. Unfortunately i realized (i also sent an email to the author or xlsReadWrite() ) that the read.xls() doesn't allow to import the file in R from internet. Here it is the the code:

library(xlsReadWrite) mydata<-read.xls("file path", header=TRUE) however if I change xls to csv it works just fine. Any ideas what I'm doing wrong? I have have also using the package gdata with the exact same error. Below is the error that pops up. Error in findPerl(verbose = verbose) : perl executable not found. Use perl= argument to specify the correct path. Error in

Dear R-experts, It is a quite stupid question but please help me. I am very confuced. I am able to import normal txt ant mat-files to R but unable to import .xls-file I do not understand the online help. Can please anyone send me the corresponding command lines? The .xls-file is attached. In my file we use commas for the decimal format (example: 0,712), changes might be needed. Thanks, Corinna

Hello everyone, What is the simplest, most RELIABLE way to import data from MS EXCEL (.xls) format to R? In the past I have used the read.xls() function from the xlsReadWrite package, however, I have been wrestling with it all afternoon long with no success. I continue to receive the following error message: > {widge<-read.xls("F:\\Classes\\Z1.Data\\stat.3010\\WidgeOne.xls", +

Hi everybody, I wonder if there is a built-in function similar to Matlab's "normfit" which computes 95% CI based on the normality assumption. So, I have a vector of values and I want to calculate 95% normal CI. Of course, I could write my own function, no problem, but I still wonder if built-in functionality exists. (I wish quantile() had this functionality included). Anyone knows?