similar to: Shapefiles

Dear List, I have just compiled my first R library for submission to CRAN; however, I have a tiny problem with 'R CMD check' that is holding me back. I have read extensively the PDF document on Writing R Extensions and the 'Making R Packages Under Windows' tutorial by P. Rossi. All functions are given in R code (no C/C++/Fortran) with two very simple demonstration datasets. My

Dear List, Running on a PC (Windows 2000) with 256 MB RAM, Version R1.9.1 I have a relatively simple problem, which I can solve for relatively small datasets, but run into difficulties with larger ones. I believe that my approach is a hack rather than something elegant and I was hoping that somebody on this list might help me improve my code. Basically, given a vector of values (e.g.,

Hello list members, I am working with simulated data for landscape pattern analysis. I have 1000 replicates of binary (2 colour) gridded landscapes at each combination of 9 levels of class proportion and 11 levels of spatial autocorrelation. The results are stored in an array as follows: > dim(surfaces) [1] 38 9 11 1000 The dimensions are defined as follows: [x,,,] 1:38, integers

Dear list, I have a dataset as follow and I would like to count the frequencies for the combination of the two variables (f1 and f2) for each id. I know it is should be straight forward, but I just don't know how to do it in R. Here is the SAS code I will use to get the output I want : proc means nway; class id f1 f2; var flag output out=temp; Dataset: id f1 f2 flag 798 1 2

Dear all, I have a data frame that looks like this: c1 c2 c3 A B C B C A A A B and so on; I?d like to produce one single vector consisting of the columns c1,c2, c3, such that vector=("A","B","A","B","C","A","C","A","B") I guess it?s easy to do but I don?t know how...Can anyone

By default, Rails logs all parameters passed to a controller method. As far as I can tell, this happens in both development and production modes. I have a form that collects some sensitive data. I don''t want that data sent to the log, at least not in production mode. Of course, I''d still like to log everything else. Is there a way to accomplish this? -- Posted via

I was trying to deal with foreign key issues related to order of fixture loading when I came across this: http://techpolesen.blogspot.com/2007/04/rails-fixture-tips.html This got me looking deeper into rails and I noticed that db:fixtures:load calls Fixtures.create_fixtures once for each fixture file. However, Fixtures.create_fixtures is capable of taking multiple files and also handle the

Hello guys, I am building a photo website and I have some questions before I really start programming the site. My system will be Debian + lighttpd + mysql +fastcgi + ImageMagick I plan to use file_column for image handling/verification and thumbnail creation. My question is; I need to store images in a place outside of webroot so only registered members can see them. To serve them secure

Hi, ActiveRecord does not currently support tables that have only a primary key. This seems to be a needed feature as evidenced by the tickets: http://dev.rubyonrails.org/ticket/6187 http://dev.rubyonrails.org/ticket/6319 http://dev.rubyonrails.org/ticket/7877 The update case is easily fixed by just not running the query when there are no columns to update. But the create case is problematic

Hi, there I am a grad student struggling to get my syntax right in a model I am building in R. I am trying to specify a variable,W, in a loop, such that on the first iteration, it is equal to Wo, my starting value, which I have already specified with Wo<-9.2 On any other iteration other than the first, I want W to equal the previous value of W in the iteration. plus an increment from

Hi there, I just wanted to take a quick second to thank everyone who maintains this service- just in case you don't hear it enough, there are a plethora of people who rely on this service (as evidenced by the help archives), and even if they don't say it, are greatly thankful for what you do here. Not only are you providing a service to people who are learning R, but indeed helping

All, I''ve been playing a bit with some patches to make the fixture loading and management code a little bit easier to maintain. If I were to start chopping out features, how would you feel about losing: Fixture instantiation, Old school single-file fixtures, CSV fixtures, The ability to specify a subset of fixtures (everything''s always loaded instead), The ability to

Hi there, I've hit a bump in writing postscript files with special characters in the WinAnsi encoding on a windows machine. Here's some sample code: ########################################### postscript(file = "test.eps", encoding="WinAnsi.enc", width = 3, height = 5.5, onefile = TRUE, horizontal=FALSE, family = "sans", title =

How to check an input String is a number or not in ruby? Thanks in advance, Joshua -- Posted via http://www.ruby-forum.com/.

Hi there, I'm sure there's an easy answer to this, and I can't wait to see it. The question: is there an easy way to sort a data frame by it's row names? My dilemma: I've had to pull apart a data frame, run it through a loop to do some calculations and generate new variables, and then re-construct the chunks back into a data frame at the end. Doing this preserves the row

Hi, there I tried this post on R-help but did not generate any replies, so I thought I might try the waters here since it's a more programming-based group. I have written a function that will allow me to calculate the variance components for a model II (random effects) single factor ANOVA (perhaps this is me re-inventing the wheel, but I handn't yet come across anything in R that does

Hi, there I am trying to replicate an error message in subset() to see what it is that I'm doing wrong with the datasets I am trying to work with. Essentially, I am trying to pass a string vector to subset() in order to select a specific collection of cases (i.e., I have data for these cases in one table, and want to select data from another table that match up with the cases in the

Hi, My question is how do I gain control over what values the X and Y axis show. Below is a sample plot I have made and want the X axis to represent a time vector with values taking the form Q1.60, Q2.60, Q3.60...Q1.90..etc...Currently the X axis starts with value 0 and increases by 1 through the end of the sample. win.graph() matplot(v.0,log.diff.v.6,type="l",lty=1, col=2,

Hi, there I'm currently trying to figure out how to keep my "factor" levels for a variable when moving it from one data frame or matrix to another. Example below: vec1<-(rep("10",5)) vec2<-(rep("30",5)) vec3<-(rep("80",5)) vecs<-c(vec1, vec2, vec3) resp<-rnorm(2,15) dat<-as.data.frame(cbind(resp, vecs))

Hi all, Does anyone have any tips for extracting chunks of data from a distance matrix? For instance, if one was interested in only a subset of distance comparisons (i.e., that of rows 4 thru 6, and no others), is there a simple way to pull that data out? >From some playing around with an example (below), I've been able to figure out that a distance matrix in R is stored as a single