search for: andrewh

Is there any way to search the console during an interactive session? I've looked and looked, and can not find one. In some add-on package, maybe? Sorry to be so basic, but help would be greatly appreciated. andrewH -- View this message in context: http://r.789695.n4.nabble.com/Searching-the-console-tp3797884p3797884.html Sent from the R help mailing list archive at Nabble.com.

..."a", sep='')) <- 3 aa typing aa should return 3. Is there such a function? Can there be? I thought as.symbol would do this, but it does not. > as.symbol (xx[1])*as.symbol (xx[2])(r) Error: attempt to apply non-function Looking forward to hearing from y'all. --andrewH -- View this message in context: http://r.789695.n4.nabble.com/Can-you-turn-a-string-into-a-working-symbol-tp4648343.html Sent from the R help mailing list archive at Nabble.com.

...wondering if there is an alternate file specification currently available that still allows numeric, character and factor data to be stored. Besides just using a database. A pointer in the right direction (or a solid "no" if that is the truth) would be greatly appreciated. Sincerely, andrewH -- View this message in context: http://r.789695.n4.nabble.com/Sparse-dataframes-tp4655614.html Sent from the R help mailing list archive at Nabble.com.

...erent, it would be helpful to eliminate this possibility. And this is also something I would routinely run on files from external sources if I had it. I am working in a windows XP environment, in case that makes a difference. Any help anyone could offer would be greatly appreciated. Sincerely, andrewH -- View this message in context: http://r.789695.n4.nabble.com/How-can-I-find-nonstandard-or-control-characters-in-a-large-file-tp4681896.html Sent from the R help mailing list archive at Nabble.com.

...invoked (the ?calling environment,? yes?). I?m pretty sure there is a command to do this, but I?m not sure how to find it. Any help would be greatly appreciated ? either on the necessary code, or on how to search for it, or a reference to a good discussion of this family of problems. Sincerely, andrewH -- View this message in context: http://r.789695.n4.nabble.com/reporting-multiple-objects-out-of-a-function-tp3873380p3873380.html Sent from the R help mailing list archive at Nabble.com.

...of ram. (I have seen some suggestions that data.table also provides a memory-efficient way of providing database-like functions, but I am unsure whether it would let me cope with an object of this size). Any help or suggestions anyone could offer would be very much appreciated. Warmest regards, andrewH -- View this message in context: http://r.789695.n4.nabble.com/Getting-information-encoded-in-a-SAS-SPSS-or-Stata-command-file-into-R-tp4649353.html Sent from the R help mailing list archive at Nabble.com.

Dear folks -- There are a number of functions -- I am thinking of str() as an example -- that produce text as a side-effect, rather then returning it. Is there any way to send the text produced by such functions into a character variable? Any suggestions would be greatly appreciated. andrewH -- View this message in context: http://r.789695.n4.nabble.com/Can-you-send-side-effect-text-into-a-variable-tp3746025p3746025.html Sent from the R help mailing list archive at Nabble.com.

...? As an aside, I do not understand why the list command does not do this by default, like the data.frame command does. In fact, you can use data.frame instead of list to get a named argument list, but only if all your objects are of the same length. Thanks in advance for any help you can offer. andrewH -- View this message in context: http://r.789695.n4.nabble.com/Name-the-dots-tp3819947p3819947.html Sent from the R help mailing list archive at Nabble.com.

...myname) [[1]] [1] "X[[1L]]" [[2]] [1] "X[[2L]]" Is there any way to write myname() so that it returns the same objects name regardless of whether it is handed the name directly or by lapply as an element of a list? Any help you can offer would be greatly appreciated. Warmly, andrewH -- View this message in context: http://r.789695.n4.nabble.com/Returning-the-name-of-an-object-passed-directly-or-from-a-list-by-lapply-tp3816798p3816798.html Sent from the R help mailing list archive at Nabble.com.

...t am I doing wrong? How do I use a variable containing an object's name to refer to the object itself? Although I'm hoping others will find the bald look caused by tearing my hair out to be attractive, I would appreciate any assistance you can offer in understanding this question. Warmly, andrewH testDFcols <- function(data.df, select=c(1:ncol(data.df)), bar=TRUE) { # A useful summary function if(bar) cat("##################################\n"); attach(data.df) for (column in select) { colName <-names(data.df)[column] cat("Column Name(",...

...tly identifies the NAs. In example number 3, which mixes NAs from assignment with NAs from data, is.na does not even find the NAs created by assignment, as it did in example 1. I'm running R 2.13.2 on Windows XP with ServicePack 3 Any assistance would be greatly appreciated. Appreciatively, andrewH Example #1 > # Origin: is.na()<- Exclude: NULL > KK <- factor(c("A","A","B","B","C","C"), exclude=NULL) > KK[KK=="C"] [1] C C Levels: A B C > is.na(KK[KK=="C"]) <- TRUE > KK [1] A A B...

...unction (which is why I started with a split()), and the inner loop (indexed with j) into some cute recursive function, but I was not able to do so. If anyone could suggest some nicer (e.g. shorter, or faster, or just more sophisticated) way to do this instead, I would be most grateful. Sincerely, andrewH -- View this message in context: http://r.789695.n4.nabble.com/replacing-ugly-for-loops-tp4645821.html Sent from the R help mailing list archive at Nabble.com.

...ortunately, I do not have ready access to a major research library and I have way, way outspent my book budget. Someday I?ll probably buy a copy, but for the time being, I am stuck without it. So it would be great to have a piece of code that uses them explained in detail. Warmest regards to all, andrewH -- View this message in context: http://r.789695.n4.nabble.com/Learning-the-R-way-A-Wish-tp4660287.html Sent from the R help mailing list archive at Nabble.com.

...ver after, even when reading it silently. So I was wondering if there are any significant example of people reading R code out loud available on the web, on youtube or something? I did not find any on ten minutes search, but perhaps I do not know how best to look. Does anyone know of any? Warmly, andrewH -- View this message in context: http://r.789695.n4.nabble.com/Reading-R-Code-aloud-tp3811142p3811142.html Sent from the R help mailing list archive at Nabble.com.

...ount objects. Is there a ?standard? approach to is, or a set of commonly used approaches, that anyone could suggest or point me to? I?d be happy with either coding suggestions or pointers to the methodology literature if there is one. Any help or suggestions would be greatly appreciated. Thanks! andrewH -- View this message in context: http://r.789695.n4.nabble.com/Using-factor-variables-with-overlapping-categories-tp4651054.html Sent from the R help mailing list archive at Nabble.com.

Using str() in a function. I am in the early phase of learning R, and I find I spend a lot of time trying to figure out what is actually in objects I have created or read in from a file. I'm trying to make a simple little function to display a couple of things about a object, let's say the summary() and the str(), sequentially, preferably without a bunch of surplus lines between them. I

...ow the structure of the output shifts. I can not understand what is happening. What I want it to do when given just factor cols =c(1) is to give me back exactly what it gives me bact for factor colum 1 in factor.cols = c(1,2). Any help or suggestions would be greatly appreciated. Sincerely, andrewH # Test Data test.df <- data.frame(AA=rep(LETTERS[1:2], c(6,6)),BB=rep(LETTERS[3:5], c(4,4,4)), CC=rep(LETTERS[6:9],c(3,3,3,3)), DD=c(1:12)) # The function getLevels <- function(data.df, factor.cols, data.col){ test.levels <- sapply(test.df[,factor.cols, dro...

...t allowed to define part of a data frame as a time series, and that I will just have to give up on that idea. Is that right? And why is everything a one? Is ts using the default frequency instead of the one I handed to it? And if so, why? Offers of help or insight greatly appreciated. Sincerely, andrewH -- View this message in context: http://r.789695.n4.nabble.com/Making-part-of-a-data-frame-into-a-time-series-tp4650392.html Sent from the R help mailing list archive at Nabble.com.

...once, but that was more than a decade ago, and I fear that, like many with a superficial knowledge of econometrics, I tend to see every research question in terms of OLS or GLM, even if that is not the right model for the problem. Any help or suggestions would be greatly appreciated. Sincerely, andrewH -- View this message in context: http://r.789695.n4.nabble.com/Package-or-procedure-recommendations-for-analysis-of-repeated-cross-sections-tp3694587p3694587.html Sent from the R help mailing list archive at Nabble.com.

...ght through the whole question of efficient data auditing. Is there a suite of tools, or a standard set of recommendations, that you use and like? I'd love to hear any useful advice about how to accelerate this stage of a project, and get more quickly to its statistical heart. Most sincerely, andrewH -- View this message in context: http://r.789695.n4.nabble.com/Consistently-printing-the-name-of-an-object-passed-to-a-function-a-data-auditing-question-tp3798005p3798005.html Sent from the R help mailing list archive at Nabble.com.