similar to: How to use 'switch' with strings containing spaces?

Hello, After reading help file, various threads on this board, and other online tutorials, I've attempted to use gsub (using Perl-like syntax) to change a currency string into something that can be converted to numeric type using only one regular expression.  Can anybody point out my error?  Note that >  x <- "\"$ 1,200,300,400.50\"" Tried the following in an

Hello, I'm trying to figure out how to find the index of the second occurrence of "/" in a string (which happens to represent a date) within a data frame column. I've used the following code successfully to find the first instance of "/". dframe <- data.frame(date=c("5/14/2011", "4/7/2011")) dframe$x1 <- regexpr("/", dframe[, 1])

Hi, I have a data frame with column names "1", "2", "3", ... and I'd like to extract a subset based on the values in the first column. None of the methods I tried worked (below). x <- subset(dframe, 1 = = "My Text") x <- subset(dframe, "1" = = "My Text") x <- subset(dframe, names(dframe)[1] = = "My Text") Q

Hello, Is there a way to set the maximum width of character columns when printing a data frame? I've looked into print(), format(), and options() and have been unsuccessful. For example, I'd like to achieve the results below without having to modify the data itself. > x <- data.frame(c1=rnorm(5), c2="ABCDEFGHIJKLMNOPQRSTUVWXYZ") > x c1 c2 1

Hi, Would anyone have any idea as to why I would obtain completely different results when subsetting using the subset function vs bracket notation? I have a data frame with 65 variables and 4382 rows. When I use execute the following subset command I get the correct results (125 rows) > subset(df, Renewal==TRUE, 1:2)   However, I tried to obtain the same results with bracket notation as

Hello, I'm wondering if the 'mosaic' plot of the vcd package (or any other function for that matter) can be used with a continuous variable that should be represented via various categorical variables.  All the documentation I've read lead me to believe that it only works with counts of categories. Alternatively, I've thought of first creating a contingency table where the

Hi dear listers Do you know how to made a mean by one or more categorical variables? I can do that quite easy on SAS by in R I just can't do it E.g. Some fishes Sex Lenght male 15 fema 20 fema 17 fema 19 male 18 So the idea is mean(Lenght) by sex, in order to have sex: Male mean=XX Sex: Fema mean=YY In this case is quite easy to do it by a loop, but I have a huge DB so is not an

----- Forwarded message from Wolfgang Rohdewald <wolfgang@rohdewald.de> ----- Date: Sun, 03 Oct 2004 19:24:38 +0200 From: Wolfgang Rohdewald <wolfgang@rohdewald.de> Resent-From: Wolfgang Rohdewald <wolfgang@rohdewald.de> To: Debian Bug Tracking System <submit@bugs.debian.org> Subject: Bug#274700: flac: --export-vc-to should quote strings containing spaces Package: flac

Hi UserRs, I know that there has to be an easy way to do this in R (probably easy enough that once someone clues me in I'll smack myself on the forehead for not figuring it out myself), but my searches on my own have not yielded any hints. I have many fields in my dataset that participants entered as "free lists" - i.e., the field constitutes a varying number of names each

Hi i have to table with IDs in each one. I want to make a join (as in sql) by the ID. Is any way to use the RODBC package (or other) in local tables (not a access, mysql, sql, etc. ) and made the join? Thanks in advance

This seems like a bug to me: code <- 'x <- r"(hello, "world")"' getParseData(parse(text = code)) #> line1 col1 line2 col2 id parent token terminal text #> 7 1 1 1 24 7 0 expr FALSE #> 1 1 1 1 1 1 3 SYMBOL TRUE x #> 3 1 1 1 1 3 7 expr

I searched the help list and the manual, but I do not find my mistake. Switch is working with character , with integer, but not in the third example Regards Knut count1 <- 0 test

I can't get switch() to work as expected with the letter 'E'. The following example from help works just fine. > ccc <- c("b","QQ","a","A","bb") > for(ch in ccc) cat(ch,":",switch(ch, a=1, b=2:3), "\n") b : 2 3 QQ : a : 1 A : bb : Now I replace "a=1" with "E=1"

I don't know, maybe it would make sense to keep the whole expression, that's the text of the tag after all. Also, if we don't keep the whole expression, then it is not a valid string literal any more, because it does not have quoting. I can try to look into a patch. This is for 4.1 I believe, so in some sense it is not urgent? Gabor On Wed, Apr 22, 2020 at 3:31 PM <luke-tierney

Hello I was reading the source main/src/gram.y and had one question, how does R parse x = 1 According the grammar: prog : END_OF_INPUT { return 0; } | '\n' { return xxvalue(NULL,2,NULL); } | expr_or_assign '\n' { return xxvalue($1,3,&@1); } | expr_or_assign ';' { return xxvalue($1,4,&@1); } | error { YYABORT; } ; So this should be of the 3rd

Hi the list, One of my package has an (other) error detected by memtest that I do not manage to understand. Here is the message that I get from Memtest --- 8< ---------------- > try(choice(cld1)) Error in switch(EXPR = choix, Up = { : EXPR must be a length 1 vector --- 8< ---------------- The choice function does call the choiceChangeParam function, which is: --- 8<

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Shouldn't the parser complain about unfinished strings in files? It doesn't and will tack on a newline if there isn't one there. > withOption <- function(optionList, expr) { + oldOption <- options(optionList) + on.exit(options(oldOption)) + expr + } > cat(file=tf<-tempfile(), "\"string without closing quote\n") > p <-

I am writing some code to obtain publication-like plots (like the ones can be obtained with SigmaPlot). I am not able to find the dimensions of a point. Parameters like cex make you able to make it bigger or smaller but I need to know the exact dimension (in relative coordinates : if my plot is 640x480 a dot plotted with cex=1.5 will be...) Massimo Cressoni

Dear all, switch() called with just the EXPR argument causes R to hang so that the only way to stop it is to kill R. Reproducible example: > switch(EXPR="a") the internal C subroutine behind switch is do_switch located in R/src/main/builtin.c For convenience I reproduce it below. ***************************************************************************** SEXP attribute_hidden