I'm sorry. you seem to have misunderstood my data representation for input.
Here's what I have
c<-list(INT=c("1","2","3"),NUM=c("2.34","4.56","6.78"))
I need
c<-list(INT=c(1,2,3),NUM=c(2.34,4.56,6.78))On Sun, Sep 5, 2010 at 7:57 PM, David Winsemius <[email protected]>wrote: > So there is one item per line and the task is to recognize the strings > "INT" and "NUM" and create variables with numeric type and > > INT=c(2,3,4) > NUM=c(2.37, 4.56) # ??? > > I worry that is not a full description of the task .... if there be more > than just two variable names and if all the INTs have the same name, then > they will get overwritten .... but perhaps you have specified the problem > completely, so here goes: > > > txt <- textConnection('INT > > + "2" > + "3" > + "4" > + > + NUM > + "2.37" > + "4.56"') > > indat <- read.table(txt, stringsAsFactors=FALSE) > > > indat$nflag <- as.numeric(indat$V1) > > cumsum(is.na(indat$nflag)) > [1] 1 1 1 1 2 2 2 > > > by(indat$V1, cumsum(is.na(indat$nflag)), function(x) > assign(as.character(x[1]), as.numeric(x[-1]) ,envir = .GlobalEnv) ) > cumsum(is.na(indat$nflag)): 1 > [1] 1 3 4 > ------------------------------------------------------------- > cumsum(is.na(indat$nflag)): 2 > [1] 2 5 > > INT > [1] 1 3 4 > > NUM > [1] 2 5 > . > > > > > On Sep 5, 2010, at 9:33 AM, rajesh j wrote: > > The string vector actually comes as a part of a list, and the vector is >> named "int", and the numbers are strings. I then have to make it a vector >> that is still called "int" and has 4,5,6 etc. the types are either integer >> or numeric. The number of items in the vector is unknown. >> >> here's an example, >> >> a list has vectors >> >> INT >> "2" >> "3" >> "4" >> >> NUM >> "2.37" >> "4.56" >> >> >> >> On Sun, Sep 5, 2010 at 6:56 PM, David Winsemius <[email protected]> >> wrote: >> >> On Sep 5, 2010, at 9:22 AM, rajesh j wrote: >> >> for e.g., I get the following as a string vector >>> "int" "4" "5" "6" >>> after reading the first element, I have to convert this to a integer >>> vector >>> >> >> But what is the right answer? And what number of items are possble per >> line? And what are the other possible type identifiers? We need an example >> that has enough complexity to allow testing. >> >> -- >> David. >> >> >> >>> On Sun, Sep 5, 2010 at 6:44 PM, David Winsemius <[email protected]> >>> wrote: >>> >>> On Sep 5, 2010, at 8:48 AM, rajesh j wrote: >>> >>> Hi, >>> >>> Is it possible to convert a string vector to integer or numeric vector? >>> In >>> my situation I receive data in a string vector and have to convert it >>> based >>> on a given type. >>> >>> Can you give an example? I don't understand either what sort of >>> conversion you desire or what you mean by "convert it based on a given >>> type." >>> >>> There are a couple of function you may want to consider but I am having >>> difficulty convincing myself they answer the problem posed: >>> >>> ?charToRaw >>> ?stroi >>> >>> > strtoi(charToRaw("123 this is a string"), base=16) # convert to >>> decimal ASCII >>> [1] 49 50 51 32 116 104 105 115 32 105 115 32 97 32 115 116 114 >>> 105 110 103 >>> >>> -- >>> >>> David Winsemius, MD >>> West Hartford, CT >>> >>> >>> >>> >>> -- >>> Rajesh.J >>> >>> >>> >> David Winsemius, MD >> West Hartford, CT >> >> >> >> >> -- >> Rajesh.J >> >> >> > David Winsemius, MD > West Hartford, CT > > -- Rajesh.J [[alternative HTML version deleted]] ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
