Displaying 20 results from an estimated 21 matches for "shipunov".
2003 Feb 19
4
Help in separate window under X11
Dear R users,
Is there the possibitily in R under X11 to get (after typing help(...)
command) separate help window, as it is in Windows version?
Best wishes,
=================================
Dr. Alexey B. Shipunov
Section of Molecular Systematics
Jodrell Laboratory
Royal Botanic Gardens, Kew,
Richmond, Surrey, TW9 3DS, U.K.
e-mail: a.shipunov at rbgkew.org.uk
2003 Nov 11
4
A co-occurrence matrix
...0 1 1 0
[5,] 0 0 0 0 1
where all zeros mean that these objects are not
in same group, and vice versa.
Is there a relatively simple way to construct co-
uccurence matrices of type shown above?
Any help would be appreciated,
=================================
Dr. Alexey B. Shipunov
Section of Molecular Systematics
Jodrell Laboratory
Royal Botanic Gardens, Kew,
Richmond, Surrey, TW9 3DS, U.K.
e-mail: a.shipunov at rbgkew.org.uk
2008 Mar 07
4
Warning: matrix by vector division
...00 0.3333333
# I just wonder if some R warning should be issued here?
# That is what I actually needed (column-wise frequencies):
t(t(a)/colSums(a))
# [,1] [,2]
# [1,] 0.0 0.3333333
# [2,] 0.5 0.3333333
# [3,] 0.5 0.3333333
=== end of R code ===
With best wishes and regards,
Alexey Shipunov
2023 Nov 29
1
Barplot for data frame
...can i create a vertical barplot that displays brands in x-axis
> and Revenue in Y-axis
What have you tried? If you're not currently studying R with an
instructor (who should be contacted with basic questions like this
instead; see the posting guide at [1]), I can recommend a free book by
A. Shipunov [2] to give you the basic R knowledge.
> df <- data.frame (Revenue = c("100", "300", "500"),
> Brand = c("Apple", "HP", "Lenovo")
> )
My psychic debugging powers tell me that you're get...
2024 Aug 23
1
Linear regression and stand deviation at the Linux command line
...est of the file. Enter ?read.table at the R prompt to see the
available options (which include read.csv).
Good introductions to R include, well, "An Introduction to R" [1] (also
available by typing RShowDoc('R-intro') into the R prompt) and "Visual
Statistics" by Dr. A. Shipunov [2].
Start with functions read.table(), lm(), scale(), sd(), summary(). Use
str() to look at the structure of a variable: summary(lm(...)) will
return a named list from which you can extract the values you are
interested in (see ?summary.lm). When in doubt, call
help(name_of_the_function).
--
Be...
2023 Nov 29
2
Barplot for data frame
I have a dataframe df <-
df <- data.frame (Revenue = c("100", "300", "500"),
Brand = c("Apple", "HP", "Lenovo")
)
how can i create a vertical barplot that displays brands in x-axis and Revenue in Y-axis
[[alternative HTML version deleted]]
2006 Apr 27
1
R for Mac OS X: 10.3.9 is obsolete?
....3.0 there will not be precompiled binaries of R packages for Mac OS X < 10.4 in CRAN :-((
So, the question is, is there any volunteers who could produce R binaries for Mac OS X 10.3.9? Since it will be "unofficial", I will provide the Web space.
With best wishes and regards,
Alexey Shipunov
2009 Aug 30
0
version 1.5-1 of Rcmdr package released
...).
Version 1.4-2
o For cases where translated help files of the form Commander-xx.Rd
won't compile (where "xx" is the language code), translators can now provide
a PDF file named Commander-xx.pdf to be substituted when users select Menu
-> Commander help. (Thanks to Alexey Shipunov for helping me with this
problem.)
o Dialogs that reset the active data set no longer do so if an error
occurs; previously, resetting the active data set caused error messages to
scroll off out of sight in the Messages window (problem reported by Peter
Dalgaard).
o Improved error ch...
2024 Aug 22
2
Linear regression and stand deviation at the Linux command line
R List,
Please excuse this ultra-newbie post.
I looked at this page but it's a bit beyond me.
https://www2.kenyon.edu/Depts/Math/hartlaub/Math305%20Fall2011/R.htm
I'm interested in R construct(s) to be entered at the command
line that would output slope, y-intercept, and r-squared values read
from a csv or other filename entered at the command line, and the same
for standard deviation
2005 Dec 20
0
R 2.2.1 is released
...ecursion on some
classed objects (e.g. those of class "Surv").
o The 255th character in an 8-bit character set was not handled
correctly as a letter on some platforms where C char is
signed: for example it was printed as \377 and not allowed in
variable names. (Spotted by Alexey Shipunov in Russian
encodings.)
o Conversion from POSIXct to POSIXlt is done more accurately
around the change of DST in years not supported by the OS
(pre-1970 on Windows and some others, and in the far past or
future).
o chisq.test(cbind(1:0, c(7,16)), simulate.p = TRUE) gave wrong
P-values...
2005 Dec 20
0
R 2.2.1 is released
...ecursion on some
classed objects (e.g. those of class "Surv").
o The 255th character in an 8-bit character set was not handled
correctly as a letter on some platforms where C char is
signed: for example it was printed as \377 and not allowed in
variable names. (Spotted by Alexey Shipunov in Russian
encodings.)
o Conversion from POSIXct to POSIXlt is done more accurately
around the change of DST in years not supported by the OS
(pre-1970 on Windows and some others, and in the far past or
future).
o chisq.test(cbind(1:0, c(7,16)), simulate.p = TRUE) gave wrong
P-values...
2008 Aug 08
0
New version of Rcmdr package
...e Rcmdr package (providing a basic-statistics
graphical user interface to R) is now on CRAN. This is the annual update of
the package (apart from bug-fixes and minor changes). Updated Italian and
Russian translations are included with the package (courtesy, respectively,
of Stefano Calza and Alexey Shipunov); I'll submit minor updates as other
translations arrive.
The new version of the Rcmdr package has a number of new facilities (see the
CHANGES file installed with the package), the most important of which is
probably the ability of plug-in packages to remove (as well as add to) the
Rcmdr menus...
2005 Nov 07
1
pdf device and TeXencoding?
Dear R wizards:
[a] I believe that the pdf device does not yet fully support TeXencoding. (under R-2.2.0, the pdf file created with Textext as font encoding still dies when post-processed by ghostscript.) are there any workarounds, or are there utilities that would allow a TeXencoded font to be re-encoded/converted into ISOLatin, perhaps, which R could then handle beautifully?
[b] is there a
2024 Jul 14
2
Reinterpret data without saving it to a file 1st? Check for integer stopping at 1st decimal?
A small number of columns in the data I need to work with are strings, the
rest numbers. I'm using read_excel() from the readxl package to get the
data ; right after it, the string columns are of type chr and the rest num.
I'm tasked with finding out which columns are integers. From an advice, I
tried saving the spreadsheet content into a CSV then loading that, which
works like a charm ;
2023 Dec 30
3
Help request: Parsing docx files for key words and appending to a spreadsheet
An update: Running this block of code:
# Load libraries
library(tcltk)
library(tidyverse)
library(officer)
filepath <- setwd(tk_choose.dir())
filename <- "Now they want us to charge our electric cars from litter
bins.docx"
#full_filename <- paste0(filepath, filename)
full_filename <- paste(filepath, filename, sep="/")
if (!file.exists(full_filename)) {
?
2009 Apr 17
0
R 2.9.0 is released
...rs[.win] file for cleaning
up src/.
o R CMD Rd2dvi and R CMD check are now able to cope with Cyrillic
characters in UTF-8 if environment variable _R_CYRILLIC_TEX_
is set to a non-empty value and the latex system has suitable
fonts (thanks to a hint from Alexey Shipunov).
o New function rtags() in package 'utils' that provides etags-like
indexing capabilities for R code files.
New front-end script R CMD rtags provides an interface to the
rtags() function (see R CMD rtags --help for details).
o New environment variable...
2009 Apr 17
0
R 2.9.0 is released
...rs[.win] file for cleaning
up src/.
o R CMD Rd2dvi and R CMD check are now able to cope with Cyrillic
characters in UTF-8 if environment variable _R_CYRILLIC_TEX_
is set to a non-empty value and the latex system has suitable
fonts (thanks to a hint from Alexey Shipunov).
o New function rtags() in package 'utils' that provides etags-like
indexing capabilities for R code files.
New front-end script R CMD rtags provides an interface to the
rtags() function (see R CMD rtags --help for details).
o New environment variable...
2020 Apr 24
0
R 4.0.0 is released
...defined
behaviour sanitizer' of clang 10 have been circumvented. One in
rhyper() may change the generated value for large input values.
* dotchart() now places the y-axis label (ylab) much better, not
overplotting labels, thanks to a report and suggestion by Alexey
Shipunov.
* A rare C-level array overflow in chull() has been worked around.
* Some invalid specifications of the day-of-the-year (_via_ %j,
e.g. day 366 in 2017) or week plus day-of-the-week are now
detected by strptime(). They now return NA but give a warning as
they may have...
2020 Apr 24
0
R 4.0.0 is released
...defined
behaviour sanitizer' of clang 10 have been circumvented. One in
rhyper() may change the generated value for large input values.
* dotchart() now places the y-axis label (ylab) much better, not
overplotting labels, thanks to a report and suggestion by Alexey
Shipunov.
* A rare C-level array overflow in chull() has been worked around.
* Some invalid specifications of the day-of-the-year (_via_ %j,
e.g. day 366 in 2017) or week plus day-of-the-week are now
detected by strptime(). They now return NA but give a warning as
they may have...
2020 Apr 24
0
R 4.0.0 is released
...defined
behaviour sanitizer' of clang 10 have been circumvented. One in
rhyper() may change the generated value for large input values.
* dotchart() now places the y-axis label (ylab) much better, not
overplotting labels, thanks to a report and suggestion by Alexey
Shipunov.
* A rare C-level array overflow in chull() has been worked around.
* Some invalid specifications of the day-of-the-year (_via_ %j,
e.g. day 366 in 2017) or week plus day-of-the-week are now
detected by strptime(). They now return NA but give a warning as
they may have...