similar to: (fwd) Re: the underscore ("_") in variable name

On Tue, 03 Oct 2000 10:55:28 +0000, Alberto Murta <amurta at ipimar.pt> wrote: > And objectively, it's a fact that "<-" >makes the code easier to read than "_". I don't follow this argument. Underscore isn't used anywhere else in the language, so when you see one, you know it's an assignment. On the other hand, both "<" and

> Date: Tue, 03 Oct 2000 14:45:32 +0000 > From: Alberto Murta <amurta at ipimar.pt> > > Duncan Murdoch wrote: > > > I don't follow this argument. Underscore isn't used anywhere else in > > the language, so when you see one, you know it's an assignment. On > > the other hand, both "<" and "-" have multiple other uses.

If you look at the structure, you'll see: > x$V4 <- 0 > str(x) `data.frame': 4 obs. of 4 variables: $ V1: int 1 2 3 4 $ V2: int 5 6 7 8 $ V3: int 9 10 11 12 $ V4: num 0 Don't know if this is the intended result. In any case, you're probably better off using data.matrix, as > data.matrix(x) V1 V2 V3 V4 1 1 5 9 0 2 2 6 10 0 3 3 7 11 0 4 4 8 12

Hi I have written a small function to calculate distances between pairs of landmarks ('my.dist' bellow). I gave it to a colleague that works with MSWindows and the function doesn't give the right answer: R 1.4.1 for Linux: > my.dist() [1] 22 561 R 1.4.1 for Windows: > my.dist() [1] 22 560 Warning message: Replacement length not a multiple of the elements to replace in

Dear all Why isn'it possible to calculate Mahalanobis distances with R for a matrix with 1 row (observations) more than the number of columns (variables)? > mydata <- matrix(runif(12,-5,5), 4, 3) > mahalanobis(x=mydata, center=apply(mydata,2,mean), cov=var(mydata)) [1] 2.25 2.25 2.25 2.25 > mydata <- matrix(runif(420,-5,5), 21, 20) > mahalanobis(x=mydata,

I expected that something like > for(i in names(my.data.frame)){j <- as.name(i); print(my.data.frame$j)} should work in R (and S). There's always the possibility of using > for(i in names(my.data.frame)){print(my.data.frame[,i])} but can someone someone tell me why doesn't the 1st option work also? Thanks Alberto -- Alberto G. Murta

Dear all I was writing some code that needed functions from packages 'MASS' and 'CircStats', and I received a warning saying that the function 'eqscplot' in one of the packages was masked by another 'eqscplot' from the other package (in fact 'eqscplot' from 'CircStats' seems a short version of 'eqscplot' from 'MASS'). This masking of

don't know much about programming. But I know that it is not a good idea to assign a variable name to the name of an intrinsic constant or function. In your example, you assign the name "c" to a variable. But "c" is already the name of a function i R. In this way you are asking for trouble. -----Original Message----- From: owner-r-help at stat.math.ethz.ch

At 14:35 02/10/00 +0800, mohd zamri wrote: >new to R and starting to learn to program R. The underscore ("_") did some >suprising result. e.g > >> c <- c(1,2,3,4,5) >> mean(c) >[1] 3 >> c_mean <- mean(c) >> c >[1] 3 > >having some experience in C, I thought the underscore is "always" valid in >variable name. totally confuse

Hello, all, I'd like to propose that now that the underscore-as-assignment-operator is to be removed from R (good thing, too), that the Windows GUI should replace the underscore ``_'' with the proper assignment operator ``<-'' when you type in the underscore character. This is the current default behaviour in the ESS mode in emacs, and seems to me to be a generally good

Hello all, I'm trying to hide files beginning with a underscore ( "_" ) and hidden files from my samba share's so i added this to my smb.conf: veto files = /_*/.*/ The section with the dot works, but the one with the underscore doesn't. I also tried /\_*/.*/ but this has the same result. Any ideas how to hide the files beginning with a underscore? Thanks, Evas

Hello All, I''ve submitted a patch (http://dev.rubyonrails.org/ticket/8898) to enable #underscore to be reversible. I had trouble creating a class named "CRSContact", and it turns out that underscore and camelize are not reversible in cases where there are 3 or more capital letters. As there is a dependency between class name and file name I think it would be beneficial for

Hello, After much tinkering I managed to build packages using the 64bit version of R with the help of hints from http://www.murdoch-sutherland.com/Rtools/ and http://www.stats.ox.ac.uk/~ripley/Win64/W64porting.html and R-admin Manual. But a hack was required, and this seems to be related to a comment about underscores at the end of the second reference above (but this comment is about FUTURE

Hi all, we are currently working on porting software from x86_64 to aarch64. We are working with the altarch aarch64 repos: http://mirror.centos.org/altarch/7/os/aarch64/Packages/ http://mirror.centos.org/altarch/7/extras/aarch64/Packages/ http://mirror.centos.org/altarch/7/updates/aarch64/Packages/ However, it seems that yum (and eventually rpm) has problems with identifying new packages, if

https://bugzilla.samba.org/show_bug.cgi?id=6553 Summary: rsync hangs at filenames starting with an underscore Product: rsync Version: 3.0.6 Platform: PPC OS/Version: Mac OS X Status: NEW Severity: normal Priority: P3 Component: core AssignedTo: wayned at samba.org ReportedBy: gerald at

Hi, ESS replaces "_" by "<-". How can I switch off this feature? I need to be able to type the underscore Thanks Eryk -- Witold Eryk Wolski Heidmark str 5 D-28329 Bremen tel.: 04215261837

This is a question that I should have sent to 'ess-help', but I take my chances... In 'NEWS' (1.9.0) I read the good news o Underscore '_' is now allowed in syntactically valid names, and make.names() no longer changes underscores. Very old code ... but when I try it in emacs (ESS 5.1.24), my '_' are changed to ' <- '! What can I do?

The Agile book mentions that using an underscore to break up words is the ''preferred'' method, but later says that you''ll have trouble using them in many-to-many association tables. What are people doing? It sounds like less of a hassle to cram my words together (cablepair vs cable_pair) and enjoy the native many-to-many handling. Or maybe I just answered my own

I am using ms sql server and want to configure RoR such that it does not convert the given table name (example: rubyonrails) to ruby_on_rails. I set @@pluralize_table_names = false, so that it does not pluralize the table names but cannot find the config setting which will force it not to put underscore between words in a table name. thanks in advance, -- avinash -- Posted via

Suppose you're reading data from a file in which the column names contain underscore characters. Example: ------ start of file ----- pos_x pos_y 1.0 0.0 2.0 1.0 ------ end of file ------- Using read.table, I can read this file just fine: > data <- read.table (file="data", head=T) > data pos_x pos_y 1 1 0 2 2 1 > However, I can't