search for: schumann

...g it". > A quick search showed several candidate packages: https://cran.r-project.org/package=suntools https://cran.r-project.org/package=suncalc (but I don't use any of those packages) Perhaps also worth asking at: https://stat.ethz.ch/mailman/listinfo/R-SIG-Geo/ -- Enrico Schumann Lucerne, Switzerland http://enricoschumann.net

...make such performance claims) I will take a look at that page, thanks! Hopefully there is an R implementation of generic B&B as I described out there somewhere... Alex Byrley Graduate Student Department of Electrical Engineering 235 Davis Hall (716) 341-1802 2017-07-01 3:53 GMT-04:00 Enrico Schumann <es at enricoschumann.net>: > On Thu, 29 Jun 2017, Alex Byrley writes: > > > I am looking for packages that can run a branch-and-bound algorithm to > > maximize a distance measure (such as Bhattacharyya or Mahalanobis) on a > set > > of features. > > > &gt...

There is also the package solrad that might do some of this. It is more intended for calculating solar radiation, which is probably not what you want, but may do other things you may find helpful. > On Jan 30, 2024, at 5:44?AM, Enrico Schumann <es at enricoschumann.net> wrote: > > On Tue, 30 Jan 2024, Richard O'Keefe writes: > >> Given >> - UTC timestamp >> - a location (latitude,longitude,elevation) >> I want to know >> - the sun angles >> - the moon angles >> - the phase of...

In the first paragraph of Sweave.Rnw (./src/library/utils/vignettes/Sweave.Rnw), it reads for literate programming \cite{fla:Knuth:1984}. but probably should be for literate programming \citep{fla:Knuth:1984}. ^ kind regards Enrico -- Enrico Schumann Lucerne, Switzerland http://enricoschumann.net

Hi, As I can see via path.expand a filename which contains a tilde anywhere gets automatically crippled. +> path.expand("a ~ b") [1] "a /home/user b" +> path.expand("a ~ b ~") [1] "a /home/user b /home/user" I want to open a file regardless whether its name contains any character unless 0. The unix filesystem allow the creation of such files, it

Hi, As I can see via path.expand a filename which contains a tilde anywhere gets automatically crippled. +> path.expand("a ~ b") [1] "a /home/user b" +> path.expand("a ~ b ~") [1] "a /home/user b /home/user" I want to open a file regardless whether its name contains any character unless 0. The unix filesystem allow the creation of such files, it

...e task view: https://cran.r-project.org/web/views/Optimization.html What you describe is a combinatorial problem: select k from N features, with k (much) smaller than N. So I'd suggest to also look at heuristic algorithms that can deal with such problems (e.g. genetic algorithms). -- Enrico Schumann Lucerne, Switzerland http://enricoschumann.net

Thanks a lot, so simple so efficient! I will study more the grep command I did not know. Thanks! Francesca Pancotto > Il giorno 19 ott 2017, alle ore 12:12, Enrico Schumann <es at enricoschumann.net> ha scritto: > > df[grep("strat", row.names(df)), ] [[alternative HTML version deleted]]

...our firewall using > the open source Nexus repository. Seems a bit overkill > (given that wininet has done the trick nicely up to > now), but at least it works. > > HTH. > > \Gisbert There is also the miniCRAN package (https://cran.r-project.org/package=miniCRAN). -- Enrico Schumann Lucerne, Switzerland http://enricoschumann.net

I am looking for packages that can run a branch-and-bound algorithm to maximize a distance measure (such as Bhattacharyya or Mahalanobis) on a set of features. I would like this to be learning algorithm independent, so that the method just looks at the features, and selects the subset of a user-defined size that maximizes a distance criteria such as those stated above. Can anyone give some

...quot;, test) ## [1] 1 ## attr(,"match.length") ## [1] 7 ## attr(,"useBytes") ## [1] TRUE regexpr(".*[0-9]", test, perl = TRUE) ## [1] 7 ## attr(,"match.length") ## [1] 1 ## attr(,"useBytes") ## [1] TRUE -- Enrico Schumann Lucerne, Switzerland http://enricoschumann.net

On 6 July 2018 at 12:31, Enrico Schumann wrote: | Just as one more datapoint: I cannot reproduce the segfault, with | R 3.5.1 on (L)Ubuntu 18.04. (I use the Ubuntu package, i.e. I did not | build from source.) I have been a little too busy and have not yet upgraded to 18.04 so I can't attempt to replicate -- but it _looks_ just lik...

...pal > > Enduring Investments LLC > W: 973.457.4602 > C: 551.655.8006 > The patched build (i.e. a complete version, not just the patch) is available from the same CRAN site at which you find the official release; just further below. > -----Original Message----- > From: Enrico Schumann [mailto:es at enricoschumann.net] > Sent: Friday, February 02, 2018 10:36 AM > To: Michael Ashton > Cc: Duncan Murdoch; r-help at r-project.org > Subject: Re: [R] command line fails > > > Quoting Michael Ashton <m.ashton at enduringinvestments.com>: > >> Fascina...

..._________ > R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. -- Enrico Schumann Lucerne, Switzerland http://enricoschumann.net

Dear All, My query is: Do we always need to use perl = TRUE option when doing ignore.case=TRUE? A small example : my_text = "RECOVERY OFFICER-II\nDEBTS RECOVERY TRIBUNAL-III\n RC No. 162/2015\nSBI VS RAMESH GUPTA.\n Dated: 01.03.2016 Item no.01\n Present: Ms. Sonakshi, the proxy counsel for Ms. Usha Singh, the counsel for ARCIL.\n None for the CDs.\n

...;%Y-%m-%d %H", tz="Etc/GMT-1") Create your sequence: S <- seq(a, b , by = "1 day") month.day <- format(S, "%m-%d") Now subset S for those days that you want: S[month.day <= "05-01" | month.day > "10-31"] -- Enrico Schumann Lucerne, Switzerland http://enricoschumann.net

On Fri, Jul 6, 2018 at 8:18 AM G?ran Brostr?m <goran.brostrom at umu.se> wrote: > > > > Den 2018-07-06 kl. 16:28, skrev Dirk Eddelbuettel: > > > > On 6 July 2018 at 12:31, Enrico Schumann wrote: | Just as one more > > datapoint: I cannot reproduce the segfault, with | R 3.5.1 on > > (L)Ubuntu 18.04. (I use the Ubuntu package, i.e. I did not | build > > from source.) > > > > I have been a little too busy and have not yet upgraded to 18.04 so I > >...

...d not find any information on this on the fredr information package and was wondering if anyone here might know? > Just for completeness: there is also the 'alfred' package (https://cran.r-project.org/package=alfred), with which you can also access data of the St. Louis Fed. -- Enrico Schumann Lucerne, Switzerland http://enricoschumann.net

Dear all, version 2.10-0 of package NMOF is on CRAN now. NMOF stands for 'Numerical Methods and Optimization in Finance', and it accompanies the book with the same name, written by Manfred Gilli, Dietmar Maringer and Enrico Schumann.[1] Since the last announcement on this list in 2021, several functions have been added to the package, such as 'barrierOptionEuropean' for valuing barrier options, and function 'minMAD' for computing minimum-MAD portfolios. Also, existing functionality has been expanded. For inst...

Dear all, version 2.10-0 of package NMOF is on CRAN now. NMOF stands for 'Numerical Methods and Optimization in Finance', and it accompanies the book with the same name, written by Manfred Gilli, Dietmar Maringer and Enrico Schumann.[1] Since the last announcement on this list in 2021, several functions have been added to the package, such as 'barrierOptionEuropean' for valuing barrier options, and function 'minMAD' for computing minimum-MAD portfolios. Also, existing functionality has been expanded. For inst...