Displaying 2 results from an estimated 2 matches for "r79020".
Did you mean:
979020
2020 Aug 22
1
M[cbind()] <- assignment with Matrix object loses attributes
Thanks for taking a look!
Hmm, really? In `R Under development (unstable) (2020-08-14
r79020)`, doing the indexed assignment with a regular matrix (as opposed
to a Matrix) appears to preserve attributes.
m1 <- matrix(1:9,3,3)
attr(m1,"junk") <- 12
stopifnot(isTRUE(attr(m1,"junk")==12)) ## OK
m1[cbind(1:2,2:3)] <- 1
stopifnot(isTRUE(attr(m1,"junk")==...
2020 Aug 11
2
M[cbind()] <- assignment with Matrix object loses attributes
? Does this constitute a bug, or is there something I'm missing?
assigning sub-elements of a sparse Matrix via M[X]<-..., where X is a
2-column matrix, appears to drop user-assigned attributes. I dug around
in the R code for Matrix trying to find the relevant machinery but my
brain started to hurt too badly ...
?? Will submit this as a bug if it seems warranted.
library(Matrix)
m1