similar to: aggregate, by, *apply

guRus I have say a dataframe, d and I wish to do the following: 1) For each row, I want to take one particular value of the row and multiply it by 2. How do I do it. Say the data frame is as below: OPEN HIGH LOW CLOSE 1931.2 1931.2 1931.2 1931.2 0 0 0 999.05 0 0 0 1052.5 0 0 0 987.8 0 0 0 925.6 0 0 0 866 0 0 0 1400.2 0 0 0 754.5 0 0 0 702.6 0 0 0 653.25 0 0 0 348 0 0 0 801 866.55 866.55

Hi, How does R automatically load functions so that they are available from the workspace? Is it anything like Matlab - you just specify a directory path and it finds it? The reason I ask is because I found a really nice script that I would like to use on a regular basis, and it would be nice not to have to 'copy and paste' it into R on every startup:

Hello, I am modeling some survival data wih cph (Design). I have modeled a predictor which showed non linear effect with restricted cubic splines. I would like to retrieve the se(coef) for other, linear, predictors. This is just to make nice LateX tables automatically. I have the coefficients with coef(). How do I do that? Thanks, David Biau. [[alternative HTML version deleted]]

Dear List Sorry if this question seems very basic. Is there a function to pro grammatically find number of processors in my system _ I want to pass this as a parameter to snow in some serial code to parallel code functions Regards Ajay Websites- http://decisionstats.com http://dudeofdata.com Linkedin- www.linkedin.com/in/ajayohri

Hi everyone, I am trying to make some publication-quality plots for use in Microsoft Word, but I am having trouble creating high-quality plots that are supported by Microsoft Word. If I use the R plot function to create the figure, the lines are jagged, and the picture is not of high quality (same with JPEG(), TIFF(), and PNG() functions). I have tried using the Cairo package, but it distorts

Hello- A basic question which has nonetheless floored me entirely. I have a dataset which looks like this: Type ID Date Value A 1 16/09/2020 8 A 1 23/09/2010 9 B 3 18/8/2010 7 B 1 13/5/2010 6 There are two Types, which correspond to different individuals in different conditions, and loads of ID labels (1:50)

Hi, I'm working in R 2.11.1 x64 on Windows x86_64-pc-mingw32. I'm trying to insert a very large CSV file into a SQLite database. I'm pretty new to working with databases in R, so I apologize if I'm overlooking something obvious here. I'm trying to work with the American Community Survey data, which is two 1.3GB csv files. I have enough RAM to read one of them into memory,

Dear R gurus, I'm trying to solve what I assume is a fairly simple problem, but I'm having trouble finding the proper approach. I have a matrix where each column is some object (e.g. a car) and each row is a numeric measurement of a feature of said object (e.g. horse power, top speed, etc.). Let's also suppose that I know what make the car is (e.g. toyota, ford, etc.), stored in a

Dear R Gurus, I have a fairly simple problem, but I haven't been able to find the answer on 'the google' or in the r-help archives. I am generating plots on both Windows and OS X where I need to guarantee that the font used is Arial. In my plot command I specify 'fontfamily="Arial"'. The problem is that on Windows I'm getting the following warning: Warning

Dear R gurus, I am trying to write several large matrices (~ 1GB) to separate files. I have learned that write.table is simply too slow for this task and was attempting to use write.matrix, but write.matrix does not have the ability to include row names in the output. Anyone know why that's the case? I've seen a thread stating that write.matrix is the way to go for large prints to files,

> From: Abhijit Dasgupta <adasgupta@araastat.com> > Date: October 31, 2010 1:30:02 AM EDT > To: Matt Shotwell <shotwelm@musc.edu> > Subject: Re: [R] ForestPlot or similar > > I just did something very similar using ggplot's pointrange geom. In the following, I'm plotting hazard ratios, for which the nominal value is 1 and not 0. x has 5 columns: drug, hr,

1. If we run a few passes in a sequence ..is the bytecode file transformed after each pass in sequence i.e if we have a) opt -pass1 -pass2 -pass3 < in.bc > out.bc b)opt -pass1 -pass2 < in.bc > tmp.bc opt -pass3 < tmp.bc > out.bc are the above two equivalent ? what I basically want is to run my pass on an optimised bytecode , so should i optimize it and get a new bytecode

In-Reply-To: <20060803002518.190834642@xensource.com> On Wed, 02 Aug 2006 17:25:13 -0700, Jeremy Fitzhardinge wrote: > We allow for the fact that the guest kernel may not run in ring 0. > This requires some abstraction in a few places when setting %cs or > checking privilege level (user vs kernel). I made some changes: a. Added some comments about the SEGMENT_IS_*_CODE() macros.

In-Reply-To: <20060803002518.190834642@xensource.com> On Wed, 02 Aug 2006 17:25:13 -0700, Jeremy Fitzhardinge wrote: > We allow for the fact that the guest kernel may not run in ring 0. > This requires some abstraction in a few places when setting %cs or > checking privilege level (user vs kernel). I made some changes: a. Added some comments about the SEGMENT_IS_*_CODE() macros.

Hi All, I have registered "abhijit" for SIP in asterisk Server. I am able to register my softphone (SJPhone) to the server using the name "abhijit". But whenever I try to make any calls I am gettinh the following error message:- *CLI> -- Registered SIP 'abhijit' at 172.20.28.85 port 5060 expires 120 May 26 07:34:52 NOTICE[2761]: pbx.c:1738 pbx_extension_helper:

Hi Abhijit I can't answer your questions but I would be very interested in a fully working binary of Ices2 for Win32 once it's ready. Thanks for the effort. Best regards, Ross Levis ==================================== StationPlaylist.com http://www.stationplaylist.com Low-cost music scheduling, live assist & automation software. ==================================== Abhijit

Hi, Is there a function similar to the layout function in base graphics in either lattice or ggplot? I'm hoping someone has written a function wrapper to the appropriate commands in grid that would make this easier :) Abhijit [[alternative HTML version deleted]]

Dear R Gurus, I'm seeing some strange behavior that I can't explain. I'm generating a figure for a paper and I like to save the script (no matter how simple) for future reference. My practice is to write the script and run it using the 'source()' function. What's weird is that the resultant figure is not readable by OS X 10.7.0 (Lion). While trying to figure out what I did

Is there possibility of graphic acceleration on domU pv linux without gfx passtrough? I not search 3d high performance for games but possibility of run all DE for example gnome shell or cinnamon and good performance of normal programs and video playback? Thanks for any reply -- View this message in context:

I am interested in implementing a compiler very much like llvm but with very very modest goals. I just want to have a intermediate format(machine independent) which can be used as input/output by different passes.( much like the bytecode of llvm). The only thing is I want it to be much simpler compared LLVM, say only a very few basic optimizations. Other optimizations could be written and