similar to: R more Unix-like?

Is there a cheat-sheet anywhere that describes how to do SQL-like manipulations on a data frame? My knowledge of R is rather limited. But from my experience it seems as though one can think of data frames as being similar to tables in a database: there are rows, columns, and values. Also, one can perform similar manipulations on a data frame as one can on a table. For example:

Why am I getting the error "Error: cannot allocate vector of size 512000 Kb" on a machine with 6 GB of RAM? I'm playing with some large data sets within R and doing some simple statistics. The data sets have 10^6 and 10^7 rows of numbers. R reads in and performs summary() on the 10^6 set just fine. However, on the 10^7 set, R halts with the error. My hunch is that

Is there a way to do text plots in R? I'd like to do some simple XY plots in R with the output in text (ascii). For example, with gnuplot I can do the following: echo 'set terminal dumb ; plot sin(x)' | gnuplot To generate a simple sin wave. Since I connect to a remote Linux machine using SSH, being able to generate a rough idea of what a plot will look like in text would be

Dear All, I am having a bit of problem using the DBI and RMySQL package. I have already installed DBI but now I want to connect to MySQL. So how do I do it. The CRAN package repository does not have RMySQL windows binary to install from? Regards, Indrajit Sen Gupta Business Analyst Mu Sigma Business Solutions Pvt Ltd #21/1-1, Nawab Towers Cunningham Road Bangalore 560 052, India Tel: +91 80

Hello all, How can I increase/decrease the line length for screen wrapping? Currently when I run the following the output appears to wrap at just under 80 columns: > c(1:100) [1] 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 [19] 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 [37] 37 38 39 40 41 42 43 44 45 46 47 48 49

I am new to R ( and windows XP ) and am in the process of setting it up I put an options (repos=http://.fhcrc.org") file in my .Rprofile file and it works but that's all I put in and i don'tknow what to put in my .First function. I understand that .Rprofile is used for more general options and .First for options specific to that working directory. would someone mind to send me an

Does R have command or object name completion? R has several functions of modern shells built into it e.g. history mechanism, command-line editing, emacs key bindings. However, it doesn't seem to have command or object name completion. For example, in bash I can begin typing a command and then press the tab key to have the shell fill in the rest of the command (works for environment

Hi, I am very new to R and I have written the following block of code to generate a gamma distribution for variable x (which is an array) and a function "y" whose array values depend on the individual array values of "x". The code is as follows: n=1000 x=rgamma(n,1.5,2) y=vector("numeric",n) for (i in 1:n){ y[i]=(2937/50000*exp(-1/1000*x[i])/x[i]) } now I want to

Hi, all. I'm trying to automate some regression operations in R leaving the possibility to modify the predictors in the regression. For example, I have saved in a list the results and then exported as a txt file, in which we can modify the predictors, putting for example lm(y~x^2) instead of having lm(y~x) as in the original model. Now, I need to import in R the txt file as a list to

Dear R folks: I wonder anyone has a elegent way of doing what I need to do. I have a data frame called with four columns: V1, V2, A1 and A2: V1 V2 A1 A2 A B 1.2 2.0 A D 1.2 4.0 A C 2.4 2.2 What I need to do is to convert it into the following data frame with a new column x, where x is just the stacked up of A1 and A2 placed with respective V1 and V2 in the first two

Hello, I have sample data set that looks like: YEAR MONTH DAY CONTINUE SPL TIMEFISH TIMEUNIT AREA COUNTY DEPTH DEPUNIT GEAR TRIPID CONVUNIT 1992 1 26 1 SP0073928 8 H 7 25 4 NA 1000000 02163399054 161 1992 1 26 1 SP0073928 8 H 7 25 4 NA 1000000 02163399054 8 1992 1 26 2 SP0004228 8 H 7 25 4 NA 1000000 02163399054 161 1992 1 26 2 SP0004228 8 H 7 25 4 NA 1000000 02163399054 8 1992

Is there an IRC channel for R? I have a bunch of relatively simple questions that I can't find answers to. So it'd be nice to send them to an IRC channel rather than clutter up the mailing list. I'm sure after a few examples and pointers to the right docs I'll be able to find my way. Regards, - Robert

If you've ever wondered what Karanbir Singh looks like, check out this week's (142) video podcast at http://twit.tv/floss. I'm only partway through the audio version (will finish on the drive home) and haven't heard anything that would be surprising to people already using Centos yet but it's a great presentation and something to recommend to people who aren't

Hello all, How does one enter multi-line content using ''puppet resource file ...'' at the command line? For example, I am trying to create a file called /tmp/hw.txt with two lines of content: $ cat /tmp/hw.txt hello world This does not work: $ puppet resource file hello_world \ path=/tmp/hw.txt \ ensure=file \ content="hello\nworld\n" This does, but use

hey, Adam here from FLOSS Manuals (http://www.flossmanuals.net). We write free manuals about free software and in August (10-15) we will hold Book Sprint (http://www.flossmanuals.net/booksprints) about Ogg Theora. We will write a really good manual (book) about Ogg Theora in 5 days. The event will be in Berlin. We want to cover a lot of stuff, but we hope to get our teeth into at least some of

hey, Adam here from FLOSS Manuals (http://www.flossmanuals.net). We write free manuals about free software and in August (10-15) we will hold Book Sprint (http://www.flossmanuals.net/booksprints) about Ogg Theora. We will write a really good manual (book) about Ogg Theora in 5 days. The event will be in Berlin. We want to cover a lot of stuff, but we hope to get our teeth into at least some of

Hi, Alistair Cunningham of Integrics was our guest yesterday. We talked about Integrics new product Geons, a suite of software for building large-scale distributed enterprise applications. The recorded session is now available here: http://www.voipusersconference.org/2010/geons/ The extremely rare John Todd was sighted (and heard) at this event. If you are developing a product or service

In a few days I'll give a talk on R package development and my personal experience, at the 3rd Free / Libre / Open Source Software (FLOSS) Conference which will take place on May 27th & 28th 2008, in the National Technical University of Athens, in Greece. I would appreciate if you could share your thoughts with me; What are today's obstacles on R package building, according to your

all done! ... we will check through the format a bit and make some alterations, but the first version is available now... http://en.flossmanuals.net/theoracookbook http://www.lulu.com/content/7531795 212 pages of all you can eat free video :) adam -- Adam Hyde Founder FLOSS Manuals German mobile : + 49 15 2230 54563 Email : adam at flossmanuals.net irc: irc.freenode.net #flossmanuals

I'm getting spec files from centos git which is really convenient when the related source is easy to find. But some things - e.g. from a spec file # How to create the source tarball: # # git clone git://git.fedorahosted.org/git/python-rhsm.git/ # cd client/python-rhsm # tito build --tag python-rhsm-$VERSION-$RELEASE --tgz Never used tito before, so I install it and try, and rather than