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...o vectors in a data.frame, with no avail. I did find a hack, creating two new vectors inside the function and creating a fresh formula, so I presume this has something to do with environments. Could anybody give me a hint on this? Thank you, Adrian -- Adrian Dusa Romanian Social Data Archive 1, Schitu Magureanu Bd 050025 Bucharest sector 5 Romania Tel./Fax: +40 21 3126618 \ +40 21 3120210 / int.101

...- data1[, c("XX","YY","ZZ")] I use the same dataframe for many purposes, and I run codes that change the order of the columns every time. Many thanks, Adrian ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Adrian Dusa (adi at roda.ro) Romanian Social Data Archive (www.roda.ro) 1, Schitu Magureanu Bd. 050025 Bucharest sector 5 Romania Tel./Fax: +40 (21) 312.66.18\ +40 (21) 312.02.10/ int.101

...are TRUE: which(myvec) [1] 4 5 6 13 14 15 22 23 24 I'd like to avoid creating the whole vector if possible; for very large ones it can be time consuming. There should be a way to only create the proper indexes... Thanks for any hint, Adrian -- Adrian Dusa Romanian Social Data Archive 1, Schitu Magureanu Bd 050025 Bucharest sector 5 Romania Tel./Fax: +40 21 3126618 \ +40 21 3120210 / int.101

...e to the regression plane, for a textbook example in an Intro Stats handbook for multiple regression. I used the scatterplot3d package to draw the regression plane. Many thanks, Adrian ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Adrian Dusa (adi@roda.ro) Romanian Social Data Archive (www.roda.ro) 1, Schitu Magureanu Bd. 76625 Bucharest sector 5 Romania Tel./Fax: +40 (21) 312.66.18\ +40 (21) 312.02.10/ int.101 [[alternative HTML version deleted]]

...e2 <- new.env() assign("bb", 4, e2) fun2() } fun2 <- function(idx) { get("bb", e2) } > fun1() Error in get("bb", e2) : object "e2" not found Any hint would be highly appreciated, Adrian -- Adrian Dusa Romanian Social Data Archive 1, Schitu Magureanu Bd 050025 Bucharest sector 5 Romania Tel./Fax: +40 21 3126618 \ +40 21 3120210 / int.101

...pand.grid(0:2, 0:2, 0:1)[,3:1] Is there any chance to combine different bases in order to obtain the corresponding line numbers? I thought of something like: bases <- c(3, 3, 2)^(2:0) but it doesn't work (sigh). Thanks for any hint, Adrian -- Adrian Dusa Romanian Social Data Archive 1, Schitu Magureanu Bd 050025 Bucharest sector 5 Romania Tel./Fax: +40 21 3126618 \ +40 21 3120210 / int.101

...erent directions. I read everything I could about init.angle argument, I even played with various formulas to compute it, but I just can't figure it out. How can I preserve the desired *direction* of the slices? Many thanks in advance, Adrian -- Adrian Dusa Romanian Social Data Archive 1, Schitu Magureanu Bd 050025 Bucharest sector 5 Romania Tel./Fax: +40 21 3126618 \ +40 21 3120210 / int.101

...em and needs to close" Did anyone have the same problem? I don't think it's my system, as it happened to reinstall my Windows just a few days ago, and the same problem occurred in the former one. Regards, Adrian ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Adrian Dusa Romanian Social Data Archive 1 Schitu Magureanu Bd. 050025 Bucharest sector 5 Tel. +40 21 3126618\ +40 21 3153122/ int.101 -- This message was scanned for spam and viruses by BitDefender For more information please visit http://linux.bitdefender.com/

...em and needs to close" Did anyone have the same problem? I don't think it's my system, as it happened to reinstall my Windows just a few days ago, and the same problem occurred in the former one. Regards, Adrian ~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Adrian Dusa Romanian Social Data Archive 1 Schitu Magureanu Bd. 050025 Bucharest sector 5 Tel. +40 21 3126618\ +40 21 3153122/ int.101 -- This message was scanned for spam and viruses by BitDefender For more information please visit http://linux.bitdefender.com/

...15 NA 16 3 I would like values 97, 98 and 99 to be treated as missing values. I read everything about is.na but I just can't figure out how to do it. Many thanks, Adrian ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Adrian Dusa (adi@roda.ro) Romanian Social Data Archive (www.roda.ro) 1, Schitu Magureanu Bd. 76625 Bucharest sector 5 Romania Tel./Fax: +40 (21) 312.66.18 [[alternate HTML version deleted]]

...f the file - its extension - space occupied - date when it was created - its path - CD number (this should be typed in manually) Is it possible to read a CD/structure of folders in such a way? Thank you for any suggestion, Adrian -- Adrian Dusa Romanian Social Data Archive 1, Schitu Magureanu Bd. Bucharest sector 5 Romania Tel./Fax: +40 21 3126618 \ +40 21 3120210 / int.101

...tain area? > I wrote a function which finds it in about 20 iterations, but > it seems to me > not the best solution; I'm just curios if there is an already > built function. > > Regards, > Adrian > > -- > Adrian Dusa > Romanian Social Data Archive > Bd. Schitu Magureanu nr.1 > Tel./Fax: +40 21 3126618 \ > +40 21 3120210 / int.101 > > > -- > This message was scanned for spam and viruses by BitDefender. > For more information please visit http://linux.bitdefender.com/ > > ________________________________________...

...http://finzi.psych.upenn.edu/ so I cannot search the archives for a possible answer (I Googled for this but didn't find anything). Is it possible to draw barplots using a texture instead of colors, for a black and white printer? TIA, Adrian -- Adrian Dusa Arhiva Romana de Date Sociale Bd. Schitu Magureanu nr.1 Tel./Fax: +40 21 3126618 \ +40 21 3120210 / int.101 -- This message was scanned for spam and viruses by BitDefender. For more information please visit http://linux.bitdefender.com/

...ome searhing in the R archives, but I couldn't find the answer. For example, I would like to produce a plot of a certain width and height: X11(width=10, height=5) and I would like these to be centimeters, rather than inches. Thank you, Adrian -- Adrian Dusa Romanian Social Data Archive 1, Schitu Magureanu Bd 050025 Bucharest Romania Tel./Fax: +40 21 3126618 \ +40 21 3120210 / int.101

...e aa vector? Using if and else separately, I get the correct result... > if (any(nchar(aa) < 3)) { aa[-which(nchar(aa) < 3)] } else { aa } [1] "test" "name" Thanks in advance, Adrian -- Adrian DUSA Romanian Social Data Archive 1, Schitu Magureanu Bd 050025 Bucharest sector 5 Romania Tel./Fax: +40 21 3126618 \ +40 21 3120210 / int.101

...ing the weight variable, the table should yield a value of 2 for the "eB" combination: > table(my.data$var1, my.data$var2) A B C D E a 1 0 0 0 0 b 0 0 0 1 0 c 0 0 0 0 1 d 0 0 1 0 0 e 0 2 0 0 0 Thanks in advance, Adrian -- Adrian Dusa Romanian Social Data Archive 1, Schitu Magureanu Bd 050025 Bucharest sector 5 Romania Tel./Fax: +40 21 3126618 \ +40 21 3120210 / int.101

.... What is the correct syntax to import the R-exported file 2. What can I do to prevent these situations from happening? (besides whipping the data entry person :), I am referring to R procedures to detect and correct such things) Thank you, Adrian -- Adrian Dusa Romanian Social Data Archive 1, Schitu Magureanu Bd 050025 Bucharest sector 5 Romania Tel./Fax: +40 21 3126618 \ +40 21 3120210 / int.101

...s? I tried: varlab <- function(x) attributes(x)$variable.labels but then I cannot use this to assign a specific label: > varlab(foo)[1] <- "some string" Error: couldn't find function "varlab<-" Thank you, Adrian -- Adrian DUSA Romanian Social Data Archive 1, Schitu Magureanu Bd 050025 Bucharest sector 5 Romania Tel./Fax: +40 21 3126618 \ +40 21 3120210 / int.101

..., not a 'integer' Much in the same line, what would be the procedure to create pointers to a logical vector y? I tried: PROTECT(y = coerceVector(y, LGLSXP)); py = REAL(y); where R throws a similar error. Thanks very much in advance, Adrian -- Adrian Dusa Romanian Social Data Archive 1, Schitu Magureanu Bd. 050025 Bucharest sector 5 Romania Tel.:+40 21 3126618 \ ? ? ? ?+40 21 3120210 / int.101 Fax: +40 21 3158391

...I realise that NA is reserved in R, but I assumed that when quoted it would be usable. For the moment I simply changes the country code, but I wonder if there's any (other) solution to circumvent this issue. Thanks very much in advance, Adrian -- Adrian Dusa Romanian Social Data Archive 1, Schitu Magureanu Bd. 050025 Bucharest sector 5 Romania Tel.:+40 21 3126618 \ ? ? ? ?+40 21 3120210 / int.101 Fax: +40 21 3158391