search for: petrak

I wonder if there is a way to read in CSV files so that - certain fields within each record (line) are ignored, i.e. not converted to columns in the output data frame - factors/levels are created automatically: often, the possible labels are known in advance and could immediately be converted. This would save a lot of memory and time for bigger files, I assume. Johann

...n) gnumake[2]: *** [Rsock.o] Error 1 gnumake[2]: Leaving directory `/tmp_mnt/xxxx/src/R-0.64.2/src/unix' gnumake[1]: *** [R] Error 1 gnumake[1]: Leaving directory `/tmp_mnt/xxxx/src/R-0.64.2/src' gnumake: *** [R] Error 1 Adding a typedef like for Win32 seems to help ... Johann --- Johann Petrak Email: johann@ai.univie.ac.at Austrian Research Institute for AI Phone: +43-1-533-61-12/13 Schottengasse 3 Fax: +43-1-532-61-12/77 A-1010 Vienna, AUSTRIA http://www.ai.univie.ac.at/~johann -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-...

Is it correct that there is no way of avoiding deep copying of data structures? Or asked from a different perspective, is it true that there are no pointers? :) (not that I am a fan of pointer, they just let me decide when to do deep copy on my own when the memory manager doesnt do it for me :) ) I was considering writing code in R that would need the internal representation of complex graph

I wonder which binary codings to use for the different "special" values used in R. I want to create binary coded files of double, int, and string values that should get read into R using readBin. Now, what is the correct way to code NA, NaN, Inf, and -Inf for these types? The documentation for read/writeBin doesnt contain any info on that ... (for int and string, there probably is only

Howdy Y''all, I was thrilled to recently discover migrations, as that framework addresses a common problem in an elegant way. I have, however, gotten tripped up a bit as I''ve worked with them. The first problem I encountered was that, though I was using a BigInt data type in a field in my dev database, my unit tests were failing because when I copied the schema from the dev

Is there something like the LISP function dribble in R? This would log all the output to a file but still show it on the terminal too. sink just diverts the output, but I dont see a way to do what dribble would do? Johann -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send

Greetings, Does anyone know if R-Quant, http://www.smartquant.com/ an outgrowth of the statistical package "R"? Bill Vedder -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the

I have the feeling that this is a dumb question but oh well ... When I have an object x with several attributes, y <- x will make a copy of x with all the attributes included. What if I just want y to get the value assigned but nothing else (no class, names, dim or other attributes)? Johann -- Phone/FAX/Adr/PGPkey ... at http://www.ai.univie.ac.at/~johann

Dear r-users, I am looking for an implementation of the Naive Bayes classifier for a multi-class classification problem. I can not even find the Naive Bayes classifier for two classes, though I can not believe it is not available. Can anyone help me? Uschi -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read