[R] General JRI questions

Hi all, I recently started to work with JRI/rJava and have already run R statements from Java. Since I have larger units encapsulated in R scripts, I would like to run those from Java directly. I was not able to answer the following questions and would appreciate your help on this: How do I run e

[R] Extending data frame with longer columns

Hi, I am a beginner in R and have only read a few chapters in the R book, I was not able to find a solution for this simple problem. I have an empty data frame: a=data.frame(name="test") which I would like to extend in a for-loop (with data extracted from a database). Ideally I would like to ex

[R] Running R scripts via Java R Interface (JRI)

Hi R enthusiasts, I am using JRI which is great to run R commands from Java. (Please let me know if this is the wrong forum for those questions). Its straightforward to run single R commands via JRI, but what I really would like to do is running existing R scripts from that interface. Does any of

Re: [R] two questions for R beginners

My biggest blocker was my misconception that R is extremely difficult to start with. It is powerful and one can do very complicated things ( that consequently turn things complicated) but it comes with very nice defaults and one can produce great results with standard tasks in very little time - e

[R] Three most useful R package

Hi R-fans, I would like put out a question to all R users on this list and hope it will create some feedback and discussion. 1) What are your 3 most useful R package? and 2) What R package do you still miss and why do you think it would make a useful addition? Pulling answers together for these

Re: [R] Three most useful R package

, 2 Mar 2010 15:13:54 -0500 Ralf B  wrote: >>> >>> 1) What are your 3 most useful R package? and >> >> plyr >> ggplot2 >> lattice >> > > Well, as you ask the question, the three most useful R packages         are: > base, stats and methods ;

[R] Running complete R script from Java

Is it possible to run a R script from Java (via JRI (part of rJava): http://www.rforge.net/rJava/) without adding it line by line into a JRI java application? Ralf __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE

Re: [R] Scripts from The Elements of Statistical Learning book

If you are interested in machine learning in general, you might also want to have a look at the CRAN Task View on Machine Learning & Statistical Learning that contains this package, as well as others: http://cran.r-project.org/web/views/MachineLearning.html Best, --- Ralf Bierig Post-Doctoral As

[R] Plotting symbols over a screenshot

Hi all, I would like to generate a very simple visualization in R and wonder if somebody here could tell me about a simple script that can do exactly that. Input: I have about 1000-3000 screen coordinates of mouse movements and mouse click positions in a data.frame (each collumn for each data typ

[R] Changing axis origin for plot

Hi all, I am plotting data using the simple plot function: plot(data$x, data$y) which results in a standard plot with the axis origin in the lower left corner. ^ | | | | | O O | O O --> Since my data are screen coordinates I need mirrored axis so that the origin

[R] R and/or REngine kills Java

Hi all, I am using R and JRI under Windows XP Pro. I am posting this question here since the reason might be R related (since I am running an R script) but there is also a very good chance that it is JRI only (since I am using the JRI interface to activate the script) -- in which case I want to ap

[R] Trying to create R dataframe with JRI

Hi all, I am writing here because the JRI mailing list seems abandoned... maybe some of you guys know an answer or has a pointer into the right direction. I am quite confused by the jars that exist between rServe, JRI and rJava. What I want to do is simply using a local R instance from Java and I

[R] Frequencies from x/y data into a 2d table (for 3d histogram or heatmap)

Hi all, I have simple x/y data from screen recording in a sequence: number,x,y 1,10,30 1,20, 1,43,110 1,74,18 1,88,112 and would like to create a 3d histogram data structure that i can use to create a 3d histogram or, more likely a heatmap. The unterlying data structure therefor

[R] Reverse Y-axis on hist2d diagram

I created a 2d histogram using gplots' hist2d: hist2d(x,y, freq=TRUE, nbins=50, col = c("white",heat.colors(256))) rug(x, side=1) rug(y, side=2) box() Now I would like to reverse the Y-axis, tried to use ylim=rev(range(1:400)) but seems not to work. Any ideas? Ralf _

[R] Data Synchronization -- detecting time differences in multi-source data

Hi R enthusiasts, I am dealing with logging data from different sources that contain data from user activities. The data is all timelined with one column containing Epoch time and two columns containing data (x and y coordinates of mouse movements) = three columns for each source. I have up to 10

[R] JRI API: sourcing from Java String

Hi all, I have been using 'source(filename)' to load R code from a file object. However, now I have a special case where I don't have a file since I am loading an R script from a Jar file. I would like to avoid creating temporary files. Is there a way to use the 'source' command with a Java String

[R] Column name defined by function variable

Hi all, probably a simple problem for you but I am stuck. This simple function adds columns (with differing length) to data frames: add.col <- function(df, new.col) { n.row <- dim(df)[1] length(new.col) <- n.row cbind(df, new.col) } Now I would like to extend that method

[R] Testing for differences between 2 unknown distributions/densities

Hi all, I have two distributions / densities (drew density plots and eye-balled some data). Given that I don't want to make any assumptions about the data (e.g. normality, existence of certain distribution types and parameters), what are my options for testing that the distributions are the same?

Re: [R] Column name defined by function variable

t; > I haven't check much of what you wrote, so just a blind guess. What about in > the function's body before cbind(): > names(new.col) <- "more stuff" > ? > > HTH, > Ivan > > Le 6/17/2010 11:09, Ralf B a écrit : >> >> Hi all, >> &g

[R] RJDBC - sloooooow - HELP!

Hi all, I am suffering from a very slow RJDBC (7 rows of from a simple select take like 10 minutes). Does anybody know if RMySQL is faster? Or RODBC in that respect? What are alternatives and what can be done to get a realistic performance out of MySQL when connected to R's JRI ? Best, Ralf

[R] About normality tests...

Hi all, I have two very large samples of data (1+ data points) and would like to perform normality tests on it. I know that p < .05 means that a data set is considered as not normal with any of the two tests. I am also aware that large samples tend to lead more likely to normal results (Andy F

[R] About normality tests (2) ...

In addition to the previous email: What plots would you suggest in addition to density / histogram plots and how can I produce them with R ? Perhaps one of you has an example ? Thanks a lot, Ralf __ R-help@r-project.org mailing list https://stat.ethz.c

[R] Comparing distributions

I am trying to do something in R and would appreciate a push into the right direction. I hope some of you experts can help. I have two distributions obtrained from 1 datapoints each (about 1 datapoints each, non-normal with multi-model shape (when eye-balling densities) but other then that

[R] RJDBC vs RMySQL vs ???

I am running a simple SQL SELECT statement that involvs 50k + data points using R and the RJDBC interface. I am facing very slow response times in both the RGUI and the R console. When running this SQL statement directly in a SQL client I have processing times that are a lot lot faster (which means

Re: [R] RJDBC vs RMySQL vs ???

ry runs a lot faster in the query browser I don't suspect this to be the main reason. Any ideas? Best, Ralf On Wed, Jun 23, 2010 at 4:36 PM, James W. MacDonald wrote: > Hi Ralf, > > Ralf B wrote: >> >> I am running a simple SQL SELECT statement that involvs 50k + data

Re: [R] Comparing distributions

that you aren't mentioning. > > Try comparing CDFs instead of pdfs. > > At 03:33 PM 6/23/2010, Ralf B wrote: >> >> I am trying to do something in R and would appreciate a push into the >> right direction. I hope some of you experts can help. >> >> I hav

Re: [R] RJDBC vs RMySQL vs ???

Unfortunately, I have a lot of errors with RMySQL -- but that is another thread... Ralf On Thu, Jun 24, 2010 at 10:31 AM, James W. MacDonald wrote: > Hi Ralf, > > Ralf B wrote: >> >> Sorry for the lack of details. Since I run the same SQL first directly >> on M

[R] read.csv does not find my file (windows xp)

I try to load a file myData <- read.csv(file="C:\\myfolder\\mysubfolder\\mydata.csv", head=TRUE, sep=";") and get this error: Error in file(file, "rt") : cannot open the connection In addition: Warning message: In file(file, "rt") : cannot open file 'C:\myfolder\mysubfolder\mydata.csv: No such

Re: [R] read.csv does not find my file (windows xp)

jep! I forgot to use sep="" for paste and introducted a space in front of the filename... damn, 1 hour of my life! Ralf 2010/6/24 Uwe Ligges : > > > On 24.06.2010 19:02, Ralf B wrote: >> >> I try to load a file >> >> myData<- read.csv(file="C

[R] Install package automatically if not there?

Hi fans, is it possible for a script to check if a library has been installed? I want to automatically install it if it is missing to avoid scripts to crash when running on a new machine... Ralf __ R-help@r-project.org mailing list https://stat.ethz.ch

[R] Simple qqplot question

I am a beginner in R, so please don't step on me if this is too simple. I have two data sets datax and datay for which I created a qqplot qqplot(datax,datay) but now I want a line that indicates the perfect match so that I can see how much the plot diverts from the ideal. This ideal however is no

Re: [R] Simple qqplot question

2010 at 4:44 PM, Ralf B wrote: >> I am a beginner in R, so please don't step on me if this is too >> simple. I have two data sets datax and datay for which I created a >> qqplot >> >> qqplot(datax,datay) >> >> but now I want a line that indicates the p

Re: [R] Simple qqplot question

Unfortunately not. I want a qqplot from two variables. Ralf On Thu, Jun 24, 2010 at 7:23 PM, Joris Meys wrote: > Also take a look at qq.plot in the package "car". Gives you exactly > what you want. > Cheers > Joris > > On Fri, Jun 25, 2010 at 12:55 AM, Ralf B wrote

[R] Handouts / Reports or just simply printing text to PDF?

I assume R won't easily generate nice reports (unless one starts using Sweave and LaTeX) but perhaps somebody here knows a package that can create report like output for special cases? How can I simply plot output into PDF? Perhaps you know a package I should check out? What do you guys do to creat

Re: [R] what "density" is plotting ?

Hi Carrie, the output is defined by you; density() only creates the function which you need to plot using the plot() function. When you call plot(density(x)) you get the output on the screen. You need to use pdf() if you want to create a pdf file, png() for creating a png file or postscript if you

Re: [R] what "density" is plotting ?

i*sd )*exp()  something like that . > Sorry about the confusion > > Carrie > > On Thu, Jun 24, 2010 at 10:43 PM, Ralf B wrote: >> >> Hi Carrie, >> >> the output is defined by you; density() only creates the function >> which you need to plot using th

Re: [R] Simple qqplot question

curves (??) for both distributions. Am I something missing here? | | * * * * | * |* |* | * |* | * | * * * |- Thanks, Ralf

[R] Assigning variable value as name to cbind column

Hi all, I have this (non-working) script: dataTest <- data.frame(col1=c(1,2,3)) new.data <- c(1,2) name <- "test" n.row <- dim(dataTest)[1] length(new.data) <- n.row names(new.data) <- name cbind(dataTest, name=new.data) print(dataTest) and would like to bind the new column 'new.data' to 'dataTe

[R] Good Package(s) for String and URL processing?

Are there packages that allow improved String and URL processing? E.g. extract parts of a URLs such as sub-domains, top-level domain, protocols (e.g. https, http, ftp), file type based on endings, check if a URL is valid or not, etc... I am currently only using split and paste. Are there better an

[R] Profiler for R ?

Hi, is there such a thing as a profiler for R that informs about a) how much processing time is used by particular functions and commands and b) how much memory is used for creating how many objects (or types of data structures)? In a way I am looking for something similar to the java profiler (wh

[R] Fast String operations in R ? Cost of String operations

Hi experts, currently developing some code that checks a large amount of Strings for the existence of sub-strings and pattern (detecting sub-strings within URLs). I wonder if there is information about how well particular String operations work in R together with comparisons. Are there recommenda

[R] Non-parametric regression

I have two data sets, each a vector of 1000 numbers, each vector representing a distribution (i.e. 1000 numbers each of which representing a frequency at one point on a scale between 1 and 1000). For similfication, here an short version with only 5 points. a <- c(8,10,8,12,4) b <- c(7,11,8,10,5)

[R] R^2 in loess and predict?

Parametric regression produces R^2 as a measure of how well the model predicts the sample and adjusted R^2 as a measure of how well it models the population. What is the equalvalent for non-parametric regression (e.g. loess function) ? Ralf __ R-help@r-

[R] Current script name from R

Is there a way for a script to find out about its own name ? Ralf __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minim

[R] Plotting text in existing plot?

I would like to plot some text in a existing plot graph. Is there a very simple way to do that. It does not need to be pretty at all (just maybe a way to center it or define a position within the plot). ( ? ) Ralf __ R-help@r-project.org mailing list ht

[R] KLdiv produces NA. Why?

I am trying to calculate a Kullback-Leibler divergence from two vectors with integers but get NA as a result when trying to calulate the measure. Why? x <- cbind(stuff$X, morestuff$X) x[1:5,] [,1] [,2] [1,] 293 938 [2,] 293 942 [3,] 297 949 [4,] 290 956 [5,] 294 959 KLdiv(x)

Re: [R] Current script name from R

f the form R < foo.R you'd need to inspect your system's > process table (so don't do that). > > Hope this helps. > > Allan > > On 09/07/10 10:48, Ralf B wrote: >> >> Is there a way for a script to find out about its own name ? >> >>

[R] Mirror axis on hist2d plot - how?

The following code produces a heatmap based on normalized data. I would like to mirror x and y axis for this plot. Any idea how to do that? require("gplots") x <- rnorm(500) y <- rnorm(500) hist2d(x, y, freq=TRUE, nbins=50, col = c("white",heat.colors(256))) Best, Ralf _

[R] Fast string comparison

What is the fastest way to compare two strings in R? Ralf __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self

Re: [R] Fast string comparison

or the question. So, to re-phrase my question, are there more (runtime) effective ways to find out if two strings (about 100-150 characters long) are equal? Ralf On Sun, Jul 11, 2010 at 2:37 PM, Sharpie wrote: > > > Ralf B wrote: >> >> What is the fastest way to

Re: [R] Fast string comparison

risons are slow. > > Hadley > > > On Tue, Jul 13, 2010 at 6:52 AM, Ralf B wrote: >> I am asking this question because String comparison in R seems to be >> awfully slow (based on profiling results) and I wonder if perhaps '==' >> alone is not the best one can

[R] StartsWith over vector of Strings?

Given vectors of strings of arbitrary length content <- c("abc", "def") searchset <- c("a", "abc", "abcdef", "d", "def", "defghi") Is it possible to determine the content String set that matches the searchset in the sense of 'startswith' ? This would be a vector of all strings in content that sta

[R] Substring function?

Hi all, I would like to detect all strings in the vector 'content' that contain the strings from the vector 'search'. Here a code example: content <- data.frame(urls=c( "http://www.google.com/search?source=ig&hl=en&rlz=&=&q=stuff&aq=f&aqi=g10&aql=&oq=&gs_r

Re: [R] StartsWith over vector of Strings?

gory (Greg) L. Snow Ph.D. > Statistical Data Center > Intermountain Healthcare > greg.s...@imail.org > 801.408.8111 > > >> -----Original Message- >> From: r-help-boun...@r-project.org [mailto:r-help-boun...@r- >> project.org] On Behalf Of Ralf B >> Sent: T

[R] Arrange values on a timeline

I have a set of labels arranged along a timeframe in a. Each label has a timestamp and marks a state until the next label. The dataframe a contains 5 such timestamps and 5 associated labels. This means, on a continious scale between 1-100, there are 5 markers. E.g. 'abc' marks the timestampls betwe

[R] Merging columns along time line

I am resending this, as I believe it has not arrived on the mailing list when I first emailed. I have a set of labels arranged along a timeframe in a. Each label has a timestamp and marks a state until the next label. The dataframe a contains 5 such timestamps and 5 associated labels. This means,

[R] Repeated analysis over groups / Splitting by group variable

I am performing some analysis over a large data frame and would like to conduct repeated analysis over grouped-up subsets. How can I do that? Here some example code for clarification: require("flexmix") # for Kullback-Leibler divergence n <- 23 groups <- c(1,2,3) mydata <- data.frame(

[R] KLdiv question (data.frame)

Hi all, I wonder why KLdiv does not work with data.frames: n <- 50 mydata <- data.frame( sequence=c(1:n), data1=c(rnorm(n)), data2=c(rnorm(n)) ) # does NOT work KLdiv(mydata) # works fine dataOnly <- cbind(mydata$data1, mydata$data2, mydata$group) KLdiv(dataOnly) Any ide

[R] How to transform: 4 columns into two columns stacked

I have the following data structure: n=5 mydata <- data.frame(id=1:n, x=rnorm(n), y=rnorm(n), id=1:n, x=rnorm(n), y=rnorm(n)) print(mydata) producing the following represention id x y id.1 x.1y.1 1 1 0.5326855 -2.076337031 0.7930274 -1.0530558 2 2 0.78889

[R] Question about KLdiv and large datasets

Hi all, when running KL on a small data set, everything is fine: require("flexmix") n <- 20 a <- rnorm(n) b <- rnorm(n) mydata <- cbind(a,b) KLdiv(mydata) however, when this dataset increases require("flexmix") n <- 1000 a <- rnorm(n) b <- rnorm(n) mydata <- cbind(a,b) KLdiv(mydata) KL se

Re: [R] Question about KLdiv and large datasets

ability... Ralf On Fri, Jul 16, 2010 at 10:41 AM, Peter Ehlers wrote: > On 2010-07-16 7:56, Ralf B wrote: >> >> Hi all, >> >> when running KL on a small data set, everything is fine: >> >> require("flexmix") >> n<- 20 >> a<- rn

[R] Combined plot: Scatter + density plot

Hi, in order to save space for a publication, it would be nice to have a combined scatter and density plot similar to what is shows on http://addictedtor.free.fr/graphiques/RGraphGallery.php?graph=78 I wonder if anybody perhaps has already developed code for this and is willing to share. This is

[R] Extracting bins and frequencies from frequency table

Dear R users, I would like to great a frequency table from raw data and then access the classes/bins and their respective frequencies separately. Here the code to create the frequency tables: x1 <- c(1,5,1,1,2,2,3,4,5,3,2,3,6,4,3,8) t1 <- table(x1) print(t1[1]) Its easy to plot this, but how do

[R] Multiple Lorenz curves in one diagram

Hi group, I would like to draw multiple Lorenz curves in a single plot using data already prepared. Here is a simple example: require("lawstat") lorenz.curve(c(1,2,3),c(4,5,4)) lorenz.curve(c(1,2,3),c(4,2,1)) This example draws two separate graphs. How can I combine them in a distinguishable way

[R] Determine area between two density plots

Hi group, I am creating two density plots as shown in the code below: x1 <- c(1,4,5,3,2,3,4,5,6,5,4,3,2,1,1,1,2,3) x2 <- c(1,4,5,3,5,7,4,5,6,1,1,1,2,1,1,1,2,3) plot(density(x1, na.rm = TRUE)) polygon(density(x2, na.rm = TRUE), border="blue") How can I determine the area that is covered between t

[R] Plotting densities

Hi group, I am currently plotting two densities using the following code: x1 <- c(1,2,1,3,5,6,6,7,7,8) x2 <- c(1,2,1,3,5,6,5,7) plot(density(x1, na.rm = TRUE)) polygon(density(x2, na.rm = TRUE), border="blue") However, I would like to avoid bordering the second density as it adds a nasty bottom

[R] Length of vector without NA's

Hi, this following code: x<-c(1,2,NA) length(x) returns 3, correctly counting numbers as well as NA's. How can I exclude NA's from this count? Ralf __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the p

Re: [R] Determine area between two density plots

alues for each the same will > make this process easier.  Let me know if you'd like more details. > > HTH > > Peter Alspach > >> -Original Message- >> From: r-help-boun...@r-project.org [mailto:r-help-boun...@r- >> project.org] On Behalf Of Ral

[R] rimage package problems

Hi all, I tried to install the rimage in order to get to the function ?read.jpeg. However, I get this error, independent what mirror I choose: install.packages("rimage") --- Please select a CRAN mirror for use in this session --- Warning message: In getDependencies(pkgs, dependencies, available,

[R] Inheritance and automatic function call on script exit

Hi all, in order to add certain standard functionality to a large set of scripts that I maintain, I developed a superscript that I manually include into every script at the beginning. Here an example of a very simplified super and subscript. # # superscript # output <- NULL writeOutput <- funct

Re: [R] Inheritance and automatic function call on script exit

> If you are running these interactively, you could make your own > source() function.  In that function you could define the super and > subscripts, and have it call writeOutput on.exit().  I suspect you > could get something like that to work even in batch mode by having R > load the function by

Re: [R] Inheritance and automatic function call on script exit

I think base:on.exit() will do the trick. Thank you :) Ralf On Wed, Oct 6, 2010 at 11:24 AM, Ralf B wrote: >> If you are running these interactively, you could make your own >> source() function.  In that function you could define the super and >> subscripts, and have i

Re: [R] Inheritance and automatic function call on script exit

Here the modified script with what I learned from Joshua: # # superscript # output <- NULL writeOutput <- function() { processTime <- proc.time() outputFilename <- paste("C:/myOutput_", processTime[3], ".csv", sep="") write.csv(output, file = outputFilename) } on.exit(wr

[R] Source awareness?

Here the general (perhaps silly question) first: Is it possible for a script to find out if it was sourced by another script or run directly? Here a small example with two scripts: # script A print ("This is script A") # script B source("C:/scriptA.R") print ("This is script B") I would like to

[R] Create variable by name

Can one create a variable through a function by name createVariable <- function(name) { outputVariable = name name <- NULL } after calling createVariable("myVar") I would like to have a variable myVar initialized with NULL in my environment. Is this possible? Ralf

Re: [R] Create variable by name

236), and possibly fortune(181). > > What is your ultimate goal? Maybe we can help you find a better way. > > -- > Gregory (Greg) L. Snow Ph.D. > Statistical Data Center > Intermountain Healthcare > greg.s...@imail.org > 801.408.8111 > > >> -Original Messag

[R] Rserve causes Perl error

Hi all, I tried to run Rserve: I installed it from CRAN using install.packages("Rserve") and tried to run it from the command line using: R CMD Rserve I am getting an error telling me that the command perl cannot be found. What is wrong and what can I do to fix this? Do I need to install any o

[R] Rserve alternative?

The Rserve documentation at http://rosuda.org/Rserve/doc.shtml#start states that even when making multiple connections to the Rserve, Windows won't separate workspaces physically and share environments, which will obviously cause problems and should therefore not be used. Are there any alternativ

[R] time question

I have this script which I use to get an epoch with accuracy of 1 second (based on R's inability to calculate millisecond-accurate timestamps -- at least I have not seen a straightforward solution :) ): nowInSeconds <- as.numeric(Sys.time()) nowInMS <- nowInSeconds * 1000 print(nowInSeconds) print

[R] Merge postscript files into ps/pdf

I created multiple postscript files using ?postscript. How can I merge them into a single postscript file using R? How can I merge them into a single pdf file? Thanks a lot, Ralf __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo

Re: [R] Merge postscript files into ps/pdf

> Statistical Data Center > Intermountain Healthcare > greg.s...@imail.org > 801.408.8111 > > >> -Original Message- >> From: r-help-boun...@r-project.org [mailto:r-help-boun...@r- >> project.org] On Behalf Of Ralf B >> Sent: Friday, November 12, 2010 12

Re: [R] Merge postscript files into ps/pdf

type of file you want).  I usually use Ghostscript for > tinkering with already created postscript or PDF files.  To me there > is more appropriate software than R to use if you want to > edit/merge/manipulate postscript or PDF files. > > Cheers, > > Josh > > On Thu, Nov

[R] Sweave question

It seems that Sweave is supposed to be used from Latex and R is called during the LaTeX compilation process whenever R chunks appear. What about the other way round? I would like to run it triggered by R. Is this possible? I understand that this does not correspond to the idea of literate programmi

Re: [R] Sweave question

make external calls. Ralf On Sat, Nov 13, 2010 at 4:29 PM, Johannes Huesing wrote: > Ralf B [Sat, Nov 13, 2010 at 10:03:49PM CET]: >> It seems that Sweave is supposed to be used from Latex and R is called >> during the LaTeX compilation process whenever R chunks appear. > &g

[R] Full path to currently executed script file

I am looking for a way to determine the full filepath to the currently executed script. Any ideas? Ralf __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-g

Re: [R] Sweave question

Thank you for all your comment. In result of own research I found this method that seems to do what I want in addition to your suggestions: tools::texi2dvi("myfile.tex", pdf=TRUE) Thanks again, Ralf On Mon, Nov 15, 2010 at 6:42 AM, Duncan Murdoch wrote: > On 15/11/2010 6:22 AM, Dieter Menne wro

[R] Sweave: Conditional code chunks?

I have a code junk that produces a figure. In my special case, however, data does not always exist. In cases where data exists, the code chunk is of course trival (case #1), however, what do I do for case # 2 where the data does not exist? I can obviously prevent the code from being executed by che

[R] Sweave: \Sexpr and variables with special chars

I am using \Sexpr to include a variable in a title of a Sweave document: \documentclass[a4paper]{article} <>= #mytitlevar <- "Stuff" # case 1, everything is find mytitlevar <- "Stuff_first" # case 2, f is turned into sub-text @ \title{MyTitle: \\ \Sexpr{mytitlevar} } \begin{document} \maketitle \e

[R] Statistical mailing list

I am looking for a mailing list for general statistical questions that are not R related. Do you have any suggestions for lists that are busy and helpful and/or lists that you use and recommend? Thanks in advance, Ralf __ R-help@r-project.org mailing li

[R] Spearman's Correlation Coefficient to compare distributions?

Hi, I have distributions from two different data sets and I would like to measure how similar their distributions (in terms of their bin frequencies) are. In other words, I am not interested in the exact sequence of data points but rather in the their distributional properties and in their similar

[R] Reset R environment through R command

Is it possible to remove all variables in the current environment through a R command. Here is what I want: x <- 5 y < 10:20 reset() print(x) print(y) Output should be NULL for x and y, and not 5 and 10:20. Can one do that in R? Best, Ralf __ R-help

Re: [R] Reset R environment through R command

With environment I actually meant workspace. On Thu, Jul 29, 2010 at 1:22 PM, Ralf B wrote: > Is it possible to remove all variables in the current environment > through a R command. > > Here is what I want: > > x <- 5 > y < 10:20 > reset() > print(x) > prin

[R] KLdiv question

I am having a data set that causes flexmix::KLdiv to produce NA as a result and I was told that increasing the sensitivity of the 'esp' value can be used to avoid a lot of values being set to a default (which presumably causes the problem). Now here my question. When running KLdiv on a normal dis

[R] Linear Interpolation question

Hi R experts, I have the following timeseries data: #example data structure a <- c(NA,1,NA,5,NA,NA,NA,10,NA,NA) c <- c(1:10) df <- data.frame(timestamp=a, sequence=c) print(df) where i would like to linearly interpolate between the points 1,5, and 10 in 'timestamp'. Original timestamps should no

[R] Unique rows in data frame (with condition)

I have to deal with data frames that contain multiple entries of the same (based on an identifying collumn 'id'). The second collumn is mostly corresponding to the the id collumn which means that double entries can be eliminated with ?unique. a <- unique(data.frame(timestamp=c(3,3,3,5,8), mylabel=

[R] Flip axis on hist2d plot

I am plotting a heatmap using the hist2d function: require("gplots") x <- rnorm(2000) y <- rnorm(2000) hist2d(x, y, freq=TRUE, nbins=50, col = c("white",heat.colors(256))) However, I would like to flip the vertical y axis so that the upper left corner serves as the y-origin. How can I do that? R

[R] Adding collumn to existing data frame

Hi experts, I am trying to write a very flexible method that allows me to add a new column to an existing data frame. This is what I have so far: add.column <- function(df, new.col, name) { n.row <- dim(df)[1] length(new.col) <- n.row names(new.col) <- name return(

[R] split / lapply over multiple columns

Hi all, I have a data frame with column over which I would like to run repeated functions for data analysis. Currently I am only running recursively over two columns where I column 1 has two states over which I split and column two has 3 states. The function therefore runs 2 x 3 = 6 times as shown

Re: [R] Adding collumn to existing data frame

col(mydata, c(1,2,3,4),"test1") mydata <- add.col(mydata, c(1,2,3,4,5,6,7,8),"test2") mydata Thanks a lot, David and all others here you made the effort! Ralf On Tue, Aug 3, 2010 at 10:37 PM, David Winsemius wrote: > > On Aug 3, 2010, at 10:35 PM, David Winsemi

Re: [R] Adding collumn to existing data frame

y you don't have to worry about nuisances such > as NA padding. Just a thought... > > Dennis > > On Tue, Aug 3, 2010 at 7:54 PM, Ralf B wrote: >> >> Actually it does -- one has to use feed the result back into the >> original variable: >> >> add.col &

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