search for: cwelug

Displaying 12 results from an estimated 12 matches for "cwelug".

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2006 May 09
3
Using DBI and RMySQL
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
2006 May 11
2
R more Unix-like?
...ard input, thereby preventing streaming data through that file descriptor. In reading through the man page for R and R-intro.html I haven't seen anything obvious to change this behaviour. Is it possible? Pointers to references would be greatly appreciated. Regards, - Robert http://www.cwelug.org/downloads Help others get OpenSource software. Distribute FLOSS for Windows, Linux, *BSD, and MacOS X with BitTorrent
2006 May 12
6
text plots?
...enerate 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 of benefit. I've looked at ?plot, ? par, and ?plot.default but didn't see anything obvious. Regards, - Robert http://www.cwelug.org/downloads Help others get OpenSource software. Distribute FLOSS for Windows, Linux, *BSD, and MacOS X with BitTorrent
2006 May 04
3
screen wrapping
...en? I had a look in the FAQ[1] and one of the manuals[2], but didn't see anything that mentioned line wrapping. Any pointers would be greatly appreciated. [1] http://cran.r-project.org/doc/FAQ/R-FAQ.html [2] http://cran.r-project.org/doc/manuals/R-intro.html Regards, - Robert http://www.cwelug.org/downloads Help others get OpenSource software. Distribute FLOSS for Windows, Linux, *BSD, and MacOS X with BitTorrent
2006 May 04
3
SQL like manipulations on data frames
...wondering how many other SQL-like manipulations can be done on a data frame? As an extreme example, is it reasonable to assume there is an R equivalent to: select bar, bat, baz, baz*100 as 'pctbaz' from foo where bar like %xyz % order by bat, baz desc ; Regards, - Robert http://www.cwelug.org/downloads Help others get OpenSource software. Distribute FLOSS for Windows, Linux, *BSD, and MacOS X with BitTorrent
2006 May 12
3
.Rprofile file and .First function
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
2006 May 05
5
large data set, error: cannot allocate vector
...e to 500 MB. What setting is that, can it be increased, and if so how? Googling for the error has produced lots of hits but none with answers, yet. Still browsing. Below is a transcript of the session. Thanks in advance for any pointers in the right direction. Regards, - Robert http://www.cwelug.org/downloads Help others get OpenSource software. Distribute FLOSS for Windows, Linux, *BSD, and MacOS X with BitTorrent ------- $ uname -sorv ; rpm -q R ; R --version Linux 2.6.11-1.1369_FC4smp #1 SMP Thu Jun 2 23:08:39 EDT 2005 GNU/Linux R-2.3.0-2.fc4 R version 2.3.0 (2006-04-24) Copyright (C...
2006 May 10
2
command completion?
...mmand and then press the tab key to have the shell fill in the rest of the command (works for environment variables and filenames, too). Does command completion exist and I'm not using it correctly or don't have it turned on, or is it really not there? Regards, - Robert http://www.cwelug.org/downloads Help others get OpenSource software. Distribute FLOSS for Windows, Linux, *BSD, and MacOS X with BitTorrent
2006 May 10
1
help with writing output from two different arrays to two columns in an output file
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
2006 May 10
2
importing a list
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
2006 May 16
2
split the data.frame
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
2006 May 10
3
Unique?
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