The first vector-oriented programming language I ever learned or used
was APL, and APL makes *no* distinction between row vectors and column
vectors. It has rank-0 (scalar), rank-1 (vector), rank-2 (matrix),
rank-3 ... and so on arrays. A rank-1 array is a rank-1 array is a
rank-1 array and
Agree that sweep is the tool here. (If you think it is clunky, check how more
general array-sweep operations can be done in Matlab.)
However, it isn't really true that sweep isn't moving things around. Notice
the call to aperm() at the end of the code for sweep():
perm <- c(MARGIN,
Yea, that worked. Thank you. :)
From: jim holtman
Sent: Wednesday, February 28, 2024 12:52 PM
To: Ebert,Timothy Aaron
Cc: r-help@r-project.org
Subject: Re: [R] Trouble reading a UTF-16LE file
[External Email]
Try this:
> x <- file("C:\\Users\\Jim\\Downloads\\PV2-ch2 - R_Help.ANA",
+
Try this:
> x <- file("C:\\Users\\Jim\\Downloads\\PV2-ch2 - R_Help.ANA",+
> encoding = "UTF-16")> y <- readLines(x)> head(y)[1] "1\t36,74\t0"
> "2\t269,02\t-44" "1\t326,62\t29""2\t354,52\t24"
[5] "8\t390,75\t1838" "2\t395,11\t-1053">
>
Thanks
Jim Holtman
*Data Munger
The earlier post had an attached text file that did not go through.
I hope this link works. I tested it with a coworker, but that is no guarantee.
https://uflorida-my.sharepoint.com/:u:/g/personal/tebert_ufl_edu/EXf5u_CtTwJCrhdfTBIPr7wBefZHx4P_suj4wAWb8i8HFA?e=iQawhh
Regards,
Tim
Dear R-help,
I am having trouble reading a UTF-16LE formatted file. The issue appears to
be a byte order mark at the beginning of the file. I have tried readLines(file,
encoding='utf-16LE') but that got me
[1]"\xff\xfe1" "" "" "" "" ""
This is a tab delimited text
When you specify LE you are overriding any useful information that the BOM
could convey... see
https://softwareengineering.stackexchange.com/questions/370088/is-the-bom-optional-for-utf-16-and-utf-32.
?Encoding
On February 28, 2024 5:44:49 AM PST, "Ebert,Timothy Aaron"
wrote:
>Dear R-help,
>
В Wed, 28 Feb 2024 13:44:49 +
"Ebert,Timothy Aaron" пишет:
> readLines(file, encoding='utf-16LE')
There are two ways you could encounter an encoding in R.
First are encoding markers placed on every string object, which declare
the string to be encoded in UTF-8, Latin-1, the native locale
Many thanks for the collective answers -- consider this a thank you to
the group. I had 'guessed' it had something to do with 'columns then
rows' or vice versa (MATLAB convention vs R convention), but had never
heard about 'sweep' before. Most of the time when I run into 'matrix
orientation'
Dear R-help,
I am having trouble reading a UTF-16LE formatted file. The issue appears to
be a byte order mark at the beginning of the file. I have tried readLines(file,
encoding='utf-16LE') but got me
[1]"\xff\xfe1" "" "" "" "" ""
Regards,
Tim
Hi Steven,
It's not entirely clear what you actually want to achieve in the end.
As soon as you "know" x1, and assuming that the different "xi" do not
differ in length in the real application, you know the length of the
target vector.
Instead of the loop, you can use 'Reduce' without having to
On Tue, 27 Feb 2024 14:54:26 -0500
Evan Cooch wrote:
> So, trying to convert a very long, somewhat technical bit of lin alg
> MATLAB code to R. Most of it working, but raninto a stumbling block
> that is probaably simple enough for someone to explain.
On
On Tue, 27 Feb 2024 13:51:25 -0800
Jeff Newmiller via R-help wrote:
> The fundamental data type in Matlab is a matrix... they don't have
> vectors, they have Nx1 matrices and 1xM matrices.
Also known as column vectors and row vectors. :)
> Vectors don't have any concept of "row" vs.
OK. I initialize real large vector and matrix and then shrink them when
I use them in the loop. The following lines worked. I'd glad to know of
better approaches.
bsum<-rep(0,1000); bsum
vsum<-matrix(rep(0,100),nrow=1000); vsum
for (ind in 1:3) { mydata <- read.csv(paste0("midata", ind,
On Tue, 27 Feb 2024 21:37:52 +
"Richard M. Heiberger" wrote:
> > t(t(NN)/lambda)
> [,1] [,2] [,3]
> [1,] 0.5 0.667 0.75
> [2,] 2.0 1.667 1.50
> >
>
> R matrices are column-based. MATLAB matrices are row-based.
It might depend on what you mean with this statement,
Is there as way to initialize a vector (matrix) with an unknown length
(dimension)? NULL does not seem to work. The lines below work with a
vector of length 4 and a matrix of 4 x 4. What if I do not know
initially the length/dimension of the vector/matrix?
All I want is to add up (accumulate)
В Sat, 24 Feb 2024 03:08:26 +
Leo Mada via R-help пишет:
> Are there any tools to extract the function names called by
> reverse-dependencies?
For well-behaved packages that declare their dependencies correctly,
parsing the NAMESPACE for importFrom() and import() calls should give
you the
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