similar to: NMOF 2.10-0 (Numerical Methods and Optimization in Finance)

Dear all, version 1.2-2 of package NMOF is on CRAN now. NMOF stands for 'Numerical Methods and Optimization in Finance'. The package provides R code and datasets for the book with the same name, written by Manfred Gilli, Dietmar Maringer and Enrico Schumann, published by Elsevier/Academic Press in 2011. The package has finally crossed the 1.0 line: It is 10 years since the development

Dear all, version 0.20-0 of package NMOF is now on CRAN. 'NMOF' stands for 'Numerical Methods and Optimization in Finance'. The package accompanies the book with the same name, written by Manfred Gilli, Dietmar Maringer and Enrico Schumann, published by Elsevier/Academic Press in 2011. The package contains, in particular, several implementations of optimization heuristics,

Dear all, version 0.20-0 of package NMOF is now on CRAN. 'NMOF' stands for 'Numerical Methods and Optimization in Finance'. The package accompanies the book with the same name, written by Manfred Gilli, Dietmar Maringer and Enrico Schumann, published by Elsevier/Academic Press in 2011. The package contains, in particular, several implementations of optimization heuristics,

On Fri, 02 Feb 2018, Michael Ashton writes: > Where can I get the patch? I've never installed a patch for R...usually just upgrade. > > Michael Ashton, CFA > Managing Principal > > 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

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

If Emacs is not asking for starting directory, it is very likely your init file has this somewhere: (setq ess-ask-for-ess-directory nil) On Mon, Sep 11, 2017 at 3:23 PM, Enrico Schumann <es at enricoschumann.net> wrote: > On Mon, 11 Sep 2017, Christian writes: > >> Hi, >> >> I experienced a sudden change in the behavior of M-x R in not giving >> me the choice

See, I have built my own genetic algorithm already and tested it on this problem. I have a solution, but due to the heuristic nature of GA, I cannot guarantee that it is the optimal subset. If I was simply doing this for a company project, you are spot on with the type of algorithm I would use, but I am doing this for a scientific paper. I need to be able to find the optimal subset over my

Dear all, version 1.0-1 of package PMwR is on CRAN now. PMwR stands for 'Portfolio Management with R', and the package provides tools for the practical management of financial portfolios: backtesting investment and trading strategies, computing profit/loss and returns, analysing trades, handling lists of transactions, reporting, and more. The manual [1] provides all the details; a

Dear all, version 1.0-1 of package PMwR is on CRAN now. PMwR stands for 'Portfolio Management with R', and the package provides tools for the practical management of financial portfolios: backtesting investment and trading strategies, computing profit/loss and returns, analysing trades, handling lists of transactions, reporting, and more. The manual [1] provides all the details; a

Hi Enrico, yes it works. I can also plot the graph. Next question, how do I delete the date from 16 December until 31 December 2014? Thank you very much. > dt$time <- as.POSIXct(dt$time)> > dt_ts <- xts(dt$count, dt$time)> str(dt_ts)An xts object on 2014-01-01 / 2014-12-31 23:59:00 containing: Data: integer [525600, 1] Index: POSIXct,POSIXt [525600] (TZ: "")

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 the moon. > I looked on CRAN for astronomy, but didn't notice anything that seems > to offer what I want. I could try coding these functions myself, but > "if

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. > > 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

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]]

Quoting Francesca PANCOTTO <f.pancotto at unimore.it>: > Dear R contributors, > > I have a problem in selecting in an efficient way, rows of a data > frame according to a condition, > which is a part of a row name of the table. > > The data frame is made of 64 rows and 2 columns, but the row names > are very long but I need to select them according to a small

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

On Tue, 21 Feb 2023, Selke, Gisbert W. writes: > On Mon, 20 Feb 2023 15:58:33 +0000, Stadler Thomas <thomas.stadler at vpbank.com> wrote: > >> as the download method 'wininet' is deprecated, I'm looking into alternative ways to install packages from within R. >> Unfortunately, curl, libcurl and wget refuse to cooperate with Kerberos on our corporate setup.

(Re-)read the discussion of indexing (both `[` and `[[`) and be sure to get clear on the difference between matrices and data frames in the Introduction to R document that comes with R. There are many ways to create numeric vectors, character vectors, and logical vectors that can then be used as indexes, including the straightforward way: df[ c( "Unique to strat ", "Unique

Zitat von Ashim Kapoor <ashimkapoor at gmail.com>: > 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:

On Sun, 08 Sep 2024, Christofer Bogaso writes: > Hi, > > I am trying to the data from > https://online.stat.psu.edu/onlinecourses/sites/stat501/files/ch15/employee.txt > without any success. Below is the error I am getting: > >> read.delim('https://online.stat.psu.edu/onlinecourses/sites/stat501/files/ch15/employee.txt') > > Error in make.names(col.names,

On Thu, 08 Jun 2023, Ashim Kapoor writes: > Dear All, > > I had done an automatic upgrade of my Debian 10 system which had also > upgraded R. > > I reinstalled the stargazer package and the error went away. > > Query : Do I need to reinstall all packages with each upgrade of R ? > > Best, > Ashim Your session info says "stargazer 5.2.2". What version