search for: mycounters

I am fairly new to R and would like help with the problem below. I am trying to sum and count several rows in the data frame yy below. All works well as in example 1. When I try to add the columns, with an NA in Q21, I get as NA as mySum. I would like NA to be treated as O, or igored. I wrote a function to try to count an NA element as 0, Example 3 function. It works with a few warnings,

...tes the nonsense call makeoutput(outchannel=outcontent, whatever=whatevercontent) # I still find it difficult to write reliable code in R. # I am always afraid to run into something like > # simple example for dangerous partial list matching > > increment.counters <- function(..., mycounters){ + inclist <- list(...) + for (i in seq(along=inclist)) + mycounters[[names(inclist[i])]] <- mycounters[[names(inclist[i])]] + inclist[[i]] + mycounters + } > > mycounters <- list(leftcounter=0, rightcounter=0) > # intended use > mycounters <- increment.counters(leftcounte...

I tried to keep track of the number of access to a specific controller. I declared ''@@mycount = 0'' in the controller class. The methods in the controller will increment the @@mycount (@@mycount = @@mycount + 1) and print the value to the html page and show in the browser. The value is always 1, no matter how many times I access the controller and its action(s). Is this

Okay, I know this will probably be a very easy question. But I am discovering that RonR makes just about everything easy. The problem is, it takes me a few hours to figure out that I can do it the easy way. I need to know how to move to the next record in a database. I want to format my out put in a table. For example, I want a 3 by 3 table. So record one goes in the first cell, record

A few questions about maps... (1) How can I find a listing of the internal data sets that map() from the maps library contains? For example, "usa", "county", "state", "nz" all work. Are there any others? (2) Is there an easier, more generalized way to produce this (http://www.ai.rug.nl/~hedderik/R/US2004/ ) type of plot than this