r

Clear R Console programmatically

Is there a way to invoke the Clear Console (Ctrl+L) menu command programmatically? EDIT Sorry i forgot to clarify I use windows. Thank you ...

trying to prune down a list of files

I have a list of files and I'm trying to extract all layer1_*.grd files. Is there a way of doing this in one grep expression? lof <- c("layer1_1.grd", "layer1_1.gri", "layer1_2.grd", "layer1_2.gri", "layer1_3.grd", "layer1_3.gri", "layer1_4.grd", "layer1_4.gri", "layer1_5.grd", "layer1_5.gri", "layer2_1.grd", "layer2_1.gri", "layer2_...

How do I generate reports in R?

I've been struggling for a week now trying to figure out how to generate reports in R using either Sweave or Brew. I should say right at the beginning that I have never used Tex before but I understand the logic of it. I have read this document several times. However, I cannot even get a simple example to parse. Brew successfully conver...

I am getting an error when trying to use melt() on a dataframe containing Dates

I'd like to melt the dataframe so that in one column i have dates in a second i have username as the variable and finally the value. I'm getting this error: Error in as.Date.numeric(value) : 'origin' must be supplied and while I understand the error I'm not exactly sure how to get around it. A small sample of the data is: structure(...

How can I update .RData?

After reading this question I attempted to clean out my workspace and found that each time I opened R all the original items I had recently removed were restored. I then checked .RData and found that it had not been modified in a few weeks even though I repeatedly saved the workspace image. How often is .RData updated and how can I cha...

Changing date format to "%d/%m/%Y"

Hi Guys, Would like to change the date format in R. My data frame is shown below and would like to change all the date formats to "%d/%m/%Y" .Any help would be appreciated! df: id bdate wdate ddate 1 09/09/09 12/10/09 2009-09-27 Thanks, Bazon ...

How to patch an S4 method in an R package?

If you find a bug in a package, it's usually possible to patch the problem with fixInNamespace, e.g. fixInNamespace("mean.default", "base"). For S4 methods, I'm not sure how to do it though. The method I'm looking at is in the gWidgetstcltk package. You can see the source code with getMethod(".svalue", c("gTabletcltk", "guiWidgetsToo...

How to create plots in multiple windows and keep them seperate in R

Hello SOers, I'm sure this is an easy problem, but my google / help foo has failed me, so it's up to you. I have an R script that generates several plots, and I want to view all the plots on screen at once (in seperate windows), but I can't work out how to open multiple graphics windows. I'm using ggplot2, but I feel this is a more bas...

Dimension Reduction in Categorical Data with missing values

I have a regression model in which the dependent variable is continuous but ninety percent of the independent variables are categorical(both ordered and unordered) and around thirty percent of the records have missing values(to make matters worse they are missing randomly without any pattern, that is, more that forty five percent of the ...

Question with R. Element wise multiplication, addition, and division with 2 data.frames with varying amounts of missing data in a given row.

I have a various data.frames with columns of the same length where I am trying to multiple 2 rows together element-wise and then sum this up. For example, below are two vectors I would like to perform this operation with. > a.1[186,] q01_a q01_b q01_c q01_d q01_e q01_f q01_g q01_h q01_i q01_j q01_k q01_l q01_m 3 3 3 3 ...

Masked functions in R

This is a newbie question in R. If you have two libraries in R with same function name (and one masking the other) then how do you use the masked function. A concrete example: Both UsingR and QRMlib have the function QQPlot(), and UsingR's QQplot is masking that of QRMlib. How can I use the QQplot function of QRMlib. Thank you Addition:...

Equivalent to unix "less" command within R console

Is there an equivalent to the unix less command that can be used within the R console? ...

How to draw scruffy diagrams in R?

Any ideas how to do "scruffy" bar and scatter plots (like yuml) in R? ...

R question. Create new data set that meets all of 4 conditions.

Hello, I would like to create a new dataset where the following four conditions are all met. rowSums(is.na(UNCA[,11:23]))<12 rowSums(is.na(UNCA[,27:39]))<12 rowSums(is.na(UNCA[,40:52]))<12 rowSums(is.na(UNCA[,53:65]))<12 Thanks! ...

Peak decomposition

Hi I want to examine a NMR spectre and make the best fit of a specific peak using a sum of gaussians. With the following code it is possible to fit two gaussians to the peak, but can it easily be generalized to n gaussians? freq <- seq(100, 200, 0.1) signal <- 3.5*exp(-(freq-130)^2/50) + 0.2 + 1.5*exp(-(freq-120)^2/10) simsignal <- rpo...

Can I use cairoDevice in R under Windows?

Currently, on my R 2.10.1 installation on Windows XP, capabilities()["cairo"] returns False. Loading the package cairoDevice fails with the message "LoadLibrary failure" however the shared library "C:/Programme/R/R-2.10.1/library/cairoDevice/libs/cairoDevice.dll" is there. Any ideas how I can make cairo work on windows? ...

emacs editing Rnw keep region highlighted when highlighting R chunk

Hello, When editing an Rnw file in Emacs, I often want to make the region cover a chunk of text that contains an R chunk. For a simple example, ewr <<>>= @ wer I use transient-mark-mode such that the region is highlighted. But, if I put the point on the first line and hit C-SPC, then use C-n to move the point down, the highlighting...

R: convert data.frame columns from factors to characters

Hi, I have a data frame. Let's call him bob: > head(bob) phenotype exclusion GSM399350 3- 4- 8- 25- 44+ 11b- 11c- 19- NK1.1- Gr1- TER119- GSM399351 3- 4- 8- 25- 44+ 11b- 11c- 19- NK1.1- Gr1- TER119- GSM399352 3- 4- 8- 25- 44+ 11b- 11c- 19- NK1.1- Gr1- TER119- GSM399353 3- 4- 8- 25+ 44+ 11b- 11c-...

R: Converting a list of data frames into one data frame

I have code that at one place ends up with a list of data frames which I really want to convert to a single big data frame. I got some pointers from an earlier question which was trying to do something similar but more complex. Here's an example of what I am starting with (this is grossly simplified for illustration): listOfDataFram...

using gsub to modify output of xtable command

Hello, my.mat <- cbind(1:5, rnorm(5), 6:10, rnorm(5)) colnames(my.mat) <- c("Turn", "Draw","Turn", "Draw") print(xtable(my.mat)) yields \begin{table}[ht] \begin{center} \begin{tabular}{rrrrr} \hline & Turn & Draw & Turn & Draw \\ \hline 1 & 1.00 & -0.72 & 6.00 & 0.91 \\ 2 & 2.00 & 0.57 & 7.00 & 0.56 \\ 3 & 3.00 & 1.08 & ...