similar to: Benefit of treating NA and NaN differently for numerics

Displaying 20 results from an estimated 6000 matches similar to: "Benefit of treating NA and NaN differently for numerics"

2008 Sep 19
1
Lines between panels in lattice
Hello, I have a multi-page display each consisting of two-panels above each other. I need to draw a line from the top panel to bottom panel. Using current.vpTree() i find that "plot1.panel.1.2.vp" and "plot1.panel.1.1.vp" are the top and bottom ones respectively. I am using the following code(inspired by Paul Murrell's R Graphics) to draw a line. (All the
2009 Sep 23
2
Crash due to extreme example
Hello, I was trying this bit of code (i know it is an extreme case) g=function(r){ if(r==1) return(list(x=1)) else return(list(x=g(r-1))) } For z=g(500), the code runs but when I print z i.e >> z I get <environment: R_GlobalEnv> *** caught bus error *** address 0x1, cause 'non-existent physical address' Possible actions: 1: abort (with core dump, if enabled)
2012 Mar 16
3
Y-axis label on the right hand side in lattice?
Hello, Is there a way to add ylab on the right hand side also (in lattice)? Different from the left hand side? Cheers Saptarshi [[alternative HTML version deleted]]
2009 Jan 05
2
eval using a environment X but resultsin .GlobalEnv
Hello, Suppose I have an expression, E, which accesses some variables present in an environment V. I do this via eval(E,envir=V) however all assignments end up in V. I would like the results of assignments in E to end up in the .GlobalEnv ? Or at least the calling environment. Is there a quick way to this instead of iterating over all objects E and assigning into .GlobalEnv? Thank you Saptarshi
2010 Feb 14
4
Feature Request: Multiline Comments
Hello, Is it possible to extend the R lexer/parser to include multiline comments like /* acomment */ ? This way I can integrate emacs org-mode with my R code, so that I can have a table of contents, section folding, html-output of source etc. e.g /* * Display Code */ #+BEGIN_SRC R foo <- function(...){ stuff } #+end_src and so on . Thanks Saptarshi
2009 May 10
2
In C, a fast way to slice a vector?
Hello, Suppose in the following code, PROTECT(sr = R_tryEval( .... )) sr is a RAWSXP vector. I wish to return another RAWSXP starting at position 13 onwards (base=0). I could create another RAWSXP of the correct length and then memcpy the required bytes and length to this new one. However is there a more efficient method? Regards Saptarshi Guha
2009 Dec 01
4
Package is loaded but functions are not exported
Hello, I wrote a package, which in the NAMESPACE file exports functions like this: exportPattern("^\\rh") On R-2.8 (Linux, 64), upon loading the package I have the rh functions present. On R-2.10, Mac OS X, (32 bit), it builds, loads, but the functions are not loaded, i.e the only function is rhyper (which is not from my package). Is there something wrong with my package setup?
2008 Nov 30
1
Rserve and creating a list of lists
Hello, I have some code which generates lattice objects. The function recieves serialized forms of the lattice objects which it then unserializes and then adds to an ArrayList<REXP>. REXPRaw rser = new REXPRaw( target ); //target contains the raw serialized forms of lattice objects rconn.assign("temp",rser); REXP ret =
2009 Aug 14
1
Embed R, and provide a function to user scripts
Hello, I'm not sure how to go about this. Suppose I have a function SEXP boo(SEXP x){ //do something } Also, I have an executable which embeds R in itself. I would like to provide a R function to user code to call that calls 'boo' e.g ##user supplied expression that is given to me x<-1 boo(x) One way is to create a library with function boo that performs .Call to boo, but is
2008 Oct 06
1
Lattice and Axis height
Hello, My plots consist of 2 rows, 1 column, many pages I've managed to selectively turn of strips for the bottom panel and roll my own strip for the top par.strip.text = list(lines = c(0,3),cex=0.6) I have my own custom prepanel function too. What i'd like to do is turn off the x-axis for the top panel (since on a given page the xlim is same for both top and bottom panel, but the
2008 Dec 12
1
Writing a Long across the network?
Hello, I have to write single Long to a server written in java. The server passes the input as in.readLong() // it expects to receive 8 bytes In Python, i can do it by sending struct.pack( "!q", value) However, I have tried this writeBin(length(x),con=conn,endian="big") #conn opened in binary But the response on the server side is wrong, eg. 1 is received as
2014 Mar 06
2
A question about multiple(?) out of order ReleaseObject
Hello, This is a question that probably reveals my lack of understanding. In a C function (call it cfunc), i created a SEXP, called S, and then called R_PreserveObject on S. I returned the SEXP to the calling R function (call it rfunc). Note, I didn't call R_ReleaseObject on S. v <- .Call("cfunc") So, are the following statements correct 1. S is 'doubly' protected
2009 Sep 20
1
Return a list from a .Call but segfaults
Hello, I call a function via .Call passing to it a raw vector(D) and an integer(I) The vector is a series K1,KData1, V1,VData1, K2, KData2, ... where the integer K1 is the length of Data1 and similarly for Ki (wrt Datai)(similarly for V*) There 2*I such pairs( (Ki,KDatai), (Vi,VDatai)) The numbers Ki(and Vi) are written in network order. I am returning a list of I elements each element a
2013 Apr 26
2
Transferring R to another computer, R_HOME_DIR
Hello, I was looking at the R (installed on RHEL6) shell script and saw R_HOME_DIR=/usr/lib64/R. Nowhere (and I could have got it wrong) does it read in the environment value R_HOME_DIR. I have the need to rsync the entire folder below /usr/lib64/R to another computer into another directory location. Without changing the R shell script, how can i force it read in R_HOME_DIR? Or maybe i
2010 Aug 15
2
time of serialization
Hello, I have question about the overhead in lapply. x is a list of 3000 lists. Each of the i (1<=i<=3000) list elements is pair of two elements: a string vector and a data frame x is roughly 235MB. > gc() ## > z <- system.time(y <- lapply(x,function(r){ system.time(serialize(r,NULL))['elapsed'] })) > sum(unlist(y)) 18.812 > z user system elapsed 494.144
2013 Mar 19
2
List of default packages (that come with R)
Hello, Is there an R function that tells me the packages that come with R e.g. c("base","boot","methods","mgcv",...) Thank you Saptarshi [[alternative HTML version deleted]]
2009 Jul 17
2
Remembering a value in multiple calls of a function
Hello, I tried this pseudo-generator style experiment (see below). The "<<-" operator assigns to in the calling environment which would be the environment of "getN". Yet when the function incr is returned, isn't this environment lost? Also the print displays GlobalEnv, yet the globalenv does not have any mention of startgiven. This code was inspired from and old
2007 Aug 05
2
Question regarding QT device
Hi, After a few modifications in the makefiles, I successfully compiled the Qt device (written by Deepayan Sirkar) for OS X 10.4.9 on a Powerbook. However when loading into R If i remove this line from zzz.R in qtutils/R grDevices::deviceIsInteractive("QT") and then install >library(qtutils) loads fine and the QT() calls returns a QT window, however, if i switch to
2008 Nov 14
1
Splitting a lattice stripplot across several pages
Hello, I have a stripplot with 200+ labels i.e i have network connections. The y-axis are the server port numbers and am graphing the number of packets in a connection. Roughly stripplot(totpacks~portnum,data=network) Due to the large number of server ports in my dataset, the y-axis labels overlap so I would like to split it across several panels(1 panel per page) with about 25-50 per
2007 Feb 13
1
Multidimensional Integration over arbitrary sets
Hi, I need to integrate a 2D function over range where the limits depend on the other e.g integrate f(x,y)=x*y over {x,0,1} and {y,x,1}. i.e \int_0^1 \int_x^1 xy dydx I checked adapt but it doesn't seem to help here. Are they any packages for this sort of thing? I tried RSitesearch but couldn't find the answer to this. Many thanks for you help. Regards Saptarshi Saptarshi Guha