similar to: How I assign the result of a plot to a variable?

Given a<-"c(1,2,3,4,5)" How can  I evaluate the variable a to return a (numeric) vector comprising of 1,2,3,4,5? Thanks. [[alternative HTML version deleted]]

The "R Language Definition" at http://cran.r-project.org/doc/manuals/R-lang.html states in the following section 4.3.2 Argument matching This subsection applies to closures but not to primitive functions. What are 'closures'? [[alternative HTML version deleted]]

Given: data(AirPassengers) I get a ts data structure AirPassengers in the workspace. How can I generate the code that can create that structure? That is, given an example of a data structure, is there a way to generate the code that can greate that structure? Alternatively, is there a reference that provides a list of dta structures together with a full list of theor respective attributes?

I'm having problems copying and saving lattice graphs using R-1.4.0 under Win2k. It seems I've see this alluded to recently in R-help. If I do the following example: > data(quakes) > xyplot(long ~ lat , data = quakes) And then try to copy or save the graph as either a metafile or bitmap or if I use any of the bitmap/metafile devices via (for example) >

I am looking for a means to call Win32 API calls from R for Windows. Is that possible? Thanks. [[alternative HTML version deleted]]

data(AirPassengers) brings AirPassengers into the workspace. How can I  idenfity what the structure of AirPassengers is? Is it a data.frame, a table etc. etc. [[alternative HTML version deleted]]

I haven't been able to find an example of using R with interactive = FALSE. How do I start R such that 1. it loads a workspace 2. then starts execution with a function (in that workspace) that I choose 3. exits on completion Thanks. [[alternative HTML version deleted]]

Given studentNumbers<-10; subjEnglish<-sample(-1:100,studentNumbers,replace=TRUE); when subEnglish <=0, 'U'                         <=39, 'F'                         <=49 'D'                         <=59, 'C'                         <=69, 'B'                         <=79,'A'                         <=100 'A+' I

If I create a data.frame using session variables as follows: classResults<-data.frame(subjEnglish,gradeEnglish,subjFrench,gradeFrench,row.names=studentName) How can I remove the variables? I tried > rm(names(classResults)) Error in rm(names(classResults)) :   ... must contain names or character strings Also, how can I include the row.names variable. I tried > names(classResults)

This is copy & paste from my session: > xyz<-as.vector(c(ls(),as.matrix(lapply(ls(),class)))) > dim(xyz)<-c(length(xyz)/2,2) > > allobj<-function(){ + xyz<-as.vector(c(ls(),as.matrix(lapply(ls(),class)))); + dim(xyz)<-c(length(xyz)/2,2); + return(xyz) + } > xyz       [,1]              [,2]        [1,] "a"               "character"  [2,]

savehistory writes all the executed lines from the session. How can I write everything (executed lines and output) from the active session to a file? Using Edit | Select All then Edit Copy, I can copy everything to the clipboard and write the whole thing to a file manually. If I just used the clipboard, I can paste the whole content into another edittor (for documentation). Is there a way to

Dear R help, I am using Stata, and I use a Stata ado file (Rsource) to run R in batch mode within Stata Everything works fine .... except for the fact that I cannot export the graphics that I obtain with my computations written in my R source file I believe this is related to the global Rterm_options `"--vanilla"' that I need to precise to Rsource (otherwise it does not work) ...

I am having good success in using pdf() to produce pdf graphics files for inclusion in documents processed by pdflatex [I'm using R 1.6.0 on Linux]. I am having one small problem consistently though, which I believe I also had with S-Plus's pdf.graph(): wasted space at the top of the graph which causes pdflatex to put the graph on a later page, when the current page has plenty of space.

Given a table with colnames and rownames, print(mytable) displays the table nicely formatted. How can I capture all of what is displayed as a character matrix? Thanks. [[alternative HTML version deleted]]

ls() gives me the vector of objects in the workspace class(objName) gives me the class of objName class(ls()) just returns character as many times as there are objects. How do I get a vector of all objects in the workspace? [[alternative HTML version deleted]]

be sorted by row in ascending/descending order? Given this matrix:  57 91 31 61 16  84  3 99 85 47  21  6 57 91 31  61 16 84  3 99 I want to end with this:  21  6 57 91 31  57 91 31 61 16  61 16 84  3 99  84  3 99 85 47 The 'order' of the sort is: 3 1 4 2 Also, what R expression will give me the 'order'? Thanks. [[alternative HTML version deleted]]

Thank you Michael, Sarah and Robin for the answers to my original question. Michael you asked:"But this is rarely a good idea....perhaps you could say a little more about your overall goal and we could direct you to a more "R"-ish solution? " I realise eval (known as execute in one of my other languages) is not a good idea. The background to my question is as follows: Using

Given dayOfWeekName<-c("Mon","Tue","Wed","Thu","Fri","Sat","Sun"); dayOfWeekOrdinal<-c(1,2,3,4,5,6,0); dayOfWeekWorkDay<-c(TRUE,TRUE,TRUE,TRUE,TRUE,FALSE,FALSE); weekProfile<-list(dow=dayOfWeekName,dowI=dayOfWeekOrdinal,dowW=dayOfWeekWorkDay) 1. How can I conditionally get dow, dowI, and dowW from weekProfile?

i have a data column of text entries: 26M_AN_C.bmp 22M_AN_C.bmp 20M_HA_O.bmp 20M_AN_C.bmp 26M_HA_O.bmp 22M_HA_O.bmp 31M_AN_C.bmp 38M_HA_O.bmp . . . . And I would like to sort by the middle tag: AN, HA, etc. Is there a way to parse text data in R? In excel, I would have used the "left" and "right" function to cut out just the middle two letters out and put into another

I have some data that I need to view in various 3-D clouds. To better see the cloud structure on a 2-D screen I would like to output a bunch of bmp files with clouds at slightly different angles, then run them through an external program to animate them. But I'm having trouble getting cloud() from the lattice package to output to bmp files. Oddly, this is only a problem when outputting