search for: dimname

Hello, the fix of PR18612 (https://bugs.r-project.org/show_bug.cgi?id=18612) in r85380 (https://github.com/wch/r-source/commit/2653cc6203fce4c48874111c75bbccac3ac4e803) caused a change in `dim<-()`. Specifically, in the past, any `dim<-()` assignment would _always_ remove "dimnames" and "names" attributes per help("dim"): The replacement method changes the "dim" attribute (provided the new value is compatible) and removes any "dimnames" and "names" attributes. In the new version, assigning the same "dim"...

...gt; (https://bugs.r-project.org/show_bug.cgi?id=18612) in > r85380 > (https://github.com/wch/r-source/commit/2653cc6203fce4c48874111c75bbccac3ac4e803) > caused a change in `dim<-()`. Specifically, in the past, > any `dim<-()` assignment would _always_ remove "dimnames" > and "names" attributes per help("dim"): > The replacement method changes the "dim" attribute > (provided the new value is compatible) and removes any > "dimnames" and "names" attributes. > In the ne...

...39;ve got an array: y1=rnorm(41,0.2) y2=rnorm(41,0.2) y3=rbind(y1,y2) data11<-array(0,c(41,2,2)) data11[,1,]=y3 data11[,2,]=y3 rownames(data11)<-rownames(data11, do.NULL = FALSE, prefix = "Obs.") colnames=c("V","R") varnames=c("one","two") dimnames(data11)<-list(rownames(data11), varnames, colnames) data11a<-as.array(data11, dimnames=dimnames(data11)) The analysis that I would like to do with R(CollocInfer) runs as follows(I print for the sake of introduction here though to run this line of code requires extensive setup) res11a =...

Hi Martin, Henrik, I actually like this change. Makes a lot of sense IMO that dim(x) <- dim(x) be a no-op, or, more generally, that foo(x) <- foo(x) be a no-op for any setter/getter combo. FWIW S4Arrays::set_dim() does that too. It also preserves the dimnames if the right value is only adding or dropping outermost (ineffective) dimensions: ??? > x <- array(1:6, dim=c(2,3,1), dimnames=list(c("A", "B"), c("x","y", "z"), "T")) ??? > S4Arrays:::set_dim(x, 2:3) ? ? ? x y z ??? A 1...

Hi, I was bitten by a little incoherence in dimnames assignment or may be I missed some point. Here is the case. If I assign row names via dimnames(a)[[1]], when nrow(a)=1 then an error is thrown. But if I do the same when nrow(a) > 1 it's OK. Is one of this case works unexpectedly? Both? Neither? a=as.matrix(1) dimnames(a)[[1]]="a&q...

Dear list, If anyone knows how to assign dimnames to matrices or arrays I would be most grateful for help. I've tried various permutations of likely-looking code but get error messages every time. I could find no example in the documentation. Many thanks, Dan Bebber Department of Plant Sciences University of Oxford South Parks Road Oxford O...

I have a matrix y: > dimnames(y) $x93 [1] "1" "2" $x94 [1] "0" "1" "2" .................. so on (there are other dimensions as well) I need to access a particular dimension, but a random mechanism tells me which dimension it would. So, sometimes I might need to access dimn...

I have two queries about the behaviour of drop() and apply() regarding the dimnames and names(dimnames) of the answer. I would appreciate any comments on this behaviour. I will submit any of this as a bug report if I am encouraged to do so. The first query, concerning drop(), seems to me to be a bug in ?drop, and possibly also in the function. ?drop: [...] Any accompanying &...

Is there a reason that array() silently ignores dimnames that are not a list but matrix() gives an error? > str(matrix(11:14, 2, 2, dimnames=c("Rows","Cols"))) Error in matrix(11:14, 2, 2, dimnames = c("Rows", "Cols")) : 'dimnames' must be a list > str(array(11:14, dim=c(2, 2), dimnames=c(...

Full_Name: Hsiu-Khuern Tang Version: 1.3.0 OS: GNU/Linux (Debian unstable) Submission from: (NULL) (192.6.19.124) Hi all, I am not sure this is a bug rather than an intentional design, but here goes: If I do > a <- matrix(1:4, nrow=2) > dimnames(a)[[1]] <- c("a", "b") I get the following error message because dimnames(a) is NULL: Error: more elements supplied than there are to replace What is the proper way to do this? I know this works: > dimnames(a) <- list(c("a", "b"), NULL) Inc...

hello, i have been trying to convert my data frames to matrices in the hopes of speeding up some of my more complicated scripts. to assist with this, i am trying to create a "matrix column operator" like $: "%$%" = function(data,field) { as.numeric(data[,grep(field,unlist(dimnames(data)[2]))]) } the idea here is that you can use a matrix like a dataframe: matrix%$%"fieldname" i am getting this matrix by converting a dataframe: df = read.csv("data.csv") matrix = data.matrix(df,rownames.force=FALSE) this sets rownames to "NULL", but there is s...

I have two matrices, generated by R functions that I don't understand. I want to confirm that they're the same, but I know that they have different attributes. If I want to compare the dimnames, I can say > identical(attr(tm, "dimnames"), attr(tmm, "dimnames")) [1] FALSE or even: > identical(dimnames(tm), dimnames(tmm)) [1] FALSE But I can't find any good way to compare the "main" part of objects. What I'm doing now is: > tm_new <-...

>>>>> Martin Maechler >>>>> on Wed, 19 Feb 2020 18:06:57 +0100 writes: >>>>> Serguei Sokol >>>>> on Wed, 19 Feb 2020 15:21:21 +0100 writes: >> Hi, >> I was bitten by a little incoherence in dimnames assignment or may be I >> missed some point. >> Here is the case. If I assign row names via dimnames(a)[[1]], when >> nrow(a)=1 then an error is thrown. But if I do the same when nrow(a) > 1 >> it's OK. Is one of this case works unexpectedly? Both?...

Hi all, I have a three dimensional array with the corresponding dimension names. I would like to subset the array according to the dimension names. For example, suppose I want to extract the values corresponding to A=20, B=10, C=0. I know I can do: P2[dimnames(P2)$A==20, dimnames(P2)$B==10, dimnames(P2)$C==0] But is there a better way for doing this? Thanks for your help! Hanna > dimnames(P2) $A [1] "20" "25" "30" "35" "40" $B [1] "5" "10" "15" "20" &q...

...20.16) row(x), col(x), and functions that call them like lower.tri(x) and upper.tri(x) do not retain the rownames or colnames of x in the matrix that is returned. Example from R version 2.9.0 : x <- matrix(1:9, nrow = 3, ncol = 3) rownames(x) <- LETTERS[1:3] colnames(x) <- letters[1:3] dimnames(row(x)) # NULL dimnames(col(x)) # NULL Is there anyone for whom the expected behavior is to drop the dimnames of x ? It is not consistent with other functions of matrices. By default, row(x) already returns the row numbers of x (and similarly for col()), so how would seeing integers in the rownam...

I am attempting to run a Poisson EWMA model using Patrick Brandt's source code. I get the following error when I run the code: Error in dimnames(x) <- dn : length of 'dimnames' [1] not equal to array extent Dimnames(x) looks like this: [[1]] NULL [[2]] [1] "mip" "div" "nom" "unity" "mood" "times" [7] "hmajparty" "smajp...

Dear all, is there anyone who can help me extracting p-values from an Anova object from the car library? I can't seem to locate the p-values using str(result) or str(summary(result)) in the example below > A <- factor( rep(1:2,each=3) ) > B <- factor( rep(1:3,times=2) ) > idata <- data.frame(A,B) > fit <- lm( cbind(a1_b1,a1_b2,a1_b3,a2_b1,a2_b2,a2_b3) ? sex,

Hi list, In a function I am writing, I need to extract the dimension names of an array. I know this can be acheived easily using dimnames() but my problem is that I want my function to be robust when the number of dimensions varies. Consider the following case: foo <- array(data = rnorm(32), dim = c(4,4,2), dimnames=list(letters[1:4], LETTERS[1:4], letters[5:6])) # What I want is to extract the *names of the dimensions* for whi...

...c(41,2,2)) m8<-cbind(.29,1:41) m9<-as.array(m8,dim=c(41,2)) data11[,1,] = y+m9 data11[,2,] = y+m9 rownames(data2, do.NULL = FALSE, prefix="row") varnames=c("V","R") colnames(data6)=c("one","two") colnames(data10)=colnames(data6) dimnames(data11)=list(rownames(data2),varnames,colnames(data10)) data11a<-as.array(data11,dimnames=dimnames(data11)) attributes(data11a) #so this seems to print out the array attributes as they should be: two sets of two columns each, and the first column of each set is called 'v' and the sec...

Hi I'm using kronecker() with a matrix and a vector. I'm interested in the column names that kronecker() returns: > a <- matrix(1:9,3,3) > rownames(a) <- letters[1:3] > colnames(a) <- LETTERS[1:3] > b <- c(x=1,y=2) > kronecker(a,b,make.dimnames=TRUE) A: B: C: a:x 1 4 7 a:y 2 8 14 b:x 2 5 8 b:y 4 10 16 c:x 3 6 9 c:y 6 12 18 > The column names are undesirable for me as I don't want the extra colon. The following code is a version of kronecker() that does not exhibit this behaviour. It tests nchar() of the dimn...