Good day,
Thanks to handy hints from Martin Morgan, I ran R under gdb and checked for any
numeric overflow. We pinpointed the cause:
(gdb) info locals
i = 0
j = 10738
m = 20
n = 5
ans = 0x5b332790
aa = 0x5b3327c0
There is a line of C code in dgeMatrix.c for (i = 0; i < m; i++)
Good day,
I have a real scenario involving 45 million biological cells (samples) and 60
proteins (variables) which leads to a segmentation fault for svd. I thought
this might be a good example of why it might benefit from a long vector upgrade.
test <- matrix(rnorm(4500*60), ncol = 60)
Good day,
Ah, I was confident it wouldn't be environment-specific but it is. My
environment is
R version 4.1.0 (2021-05-18)
Platform: x86_64-pc-linux-gnu (64-bit)
Running under: Debian GNU/Linux 10 (buster)
Matrix products: default
BLAS: /usr/lib/x86_64-linux-gnu/atlas/libblas.so.3.10.3
Good day,
as.data.frame is documented on ?table and on ?as.data.frame (for list and
matrix inputs). For inputs of list type and matrix type, there is an argument
optional, which allows preservation of column names. If the input is a table,
there is no such option. Could the API be made
Hello,
Could the documentation page for subset gain an example of how to use it for
something other than a data frame or matrix? I arrived at
> random <- LETTERS[rpois(100, 10)]
> subset(table(random), x > 10)
named integer(0)
I expected a part of the table to be returned rather than an empty
Good day,
In utils, there is a function named combn. It would seem complementary for
utils to also offer permutations because of how closely mathematically related
they are to each other. Could permutations be added to save on a package
dependency if developing a package?
Hello,
Could save.image() be redesigned so that it promptly responds to Ctrl+C? It
prevents the command line from being used for a number of hours if the contents
of the workspace are large.
--
Dario Strbenac
University of Sydney
Camperdown NSW 2050
Hello,
It is from the stats package and applied to the output of logistic regression
as implemented by glm with setting family = "binomial". So, it is a base
package and not an add-on CRAN package. I shall recommend linking to FlexiBLAS
to our system administrator.
Hello,
Would a less resource-intensive value, such as 1, be a safer default CPU value
for confint? I noticed excessive CPU usage on a I.T. administrator-managed
server which was being three-quarters used by another staff member when the
confidence interval calculation in an R Markdown document
