R-universe search: exports:duration

Showing 14 of total 14 results (show query)

tidyverse

lubridate:Make Dealing with Dates a Little Easier

Functions to work with date-times and time-spans: fast and user friendly parsing of date-time data, extraction and updating of components of a date-time (years, months, days, hours, minutes, and seconds), algebraic manipulation on date-time and time-span objects. The 'lubridate' package has a consistent and memorable syntax that makes working with dates easy and fun.

Maintained by Vitalie Spinu. Last updated 4 months ago.

date date-time

757 stars 20.95 score 135k scripts 1.9k dependents

apache

arrow:Integration to 'Apache' 'Arrow'

'Apache' 'Arrow' <https://arrow.apache.org/> is a cross-language development platform for in-memory data. It specifies a standardized language-independent columnar memory format for flat and hierarchical data, organized for efficient analytic operations on modern hardware. This package provides an interface to the 'Arrow C++' library.

Maintained by Jonathan Keane. Last updated 2 months ago.

arrow curl openssl cpp

15k stars 19.25 score 10k scripts 82 dependents

enricoschumann

NMOF:Numerical Methods and Optimization in Finance

Functions, examples and data from the first and the second edition of "Numerical Methods and Optimization in Finance" by M. Gilli, D. Maringer and E. Schumann (2019, ISBN:978-0128150658). The package provides implementations of optimisation heuristics (Differential Evolution, Genetic Algorithms, Particle Swarm Optimisation, Simulated Annealing and Threshold Accepting), and other optimisation tools, such as grid search and greedy search. There are also functions for the valuation of financial instruments such as bonds and options, for portfolio selection and functions that help with stochastic simulations.

Maintained by Enrico Schumann. Last updated 1 months ago.

black-scholes differential-evolution genetic-algorithm grid-search heuristics implied-volatility local-search optimization particle-swarm-optimization simulated-annealing threshold-accepting

37 stars 9.40 score 101 scripts 3 dependents

trinker

textshape:Tools for Reshaping Text

Tools that can be used to reshape and restructure text data.

Maintained by Tyler Rinker. Last updated 12 months ago.

data-reshaping manipulation sentence-boundary-detection text-data text-formating tidy

50 stars 9.18 score 266 scripts 34 dependents

jeromeecoac

seewave:Sound Analysis and Synthesis

Functions for analysing, manipulating, displaying, editing and synthesizing time waves (particularly sound). This package processes time analysis (oscillograms and envelopes), spectral content, resonance quality factor, entropy, cross correlation and autocorrelation, zero-crossing, dominant frequency, analytic signal, frequency coherence, 2D and 3D spectrograms and many other analyses. See Sueur et al. (2008) <doi:10.1080/09524622.2008.9753600> and Sueur (2018) <doi:10.1007/978-3-319-77647-7>.

Maintained by Jerome Sueur. Last updated 1 years ago.

18 stars 8.88 score 880 scripts 23 dependents

spedygiorgio

lifecontingencies:Financial and Actuarial Mathematics for Life Contingencies

Classes and methods that allow the user to manage life table, actuarial tables (also multiple decrements tables). Moreover, functions to easily perform demographic, financial and actuarial mathematics on life contingencies insurances calculations are contained therein. See Spedicato (2013) <doi:10.18637/jss.v055.i10>.

Maintained by Giorgio Alfredo Spedicato. Last updated 6 months ago.

actuarial financial life-contingencies life-insurance cpp

61 stars 7.06 score 156 scripts

archaeostat

ArchaeoPhases:Post-Processing of Markov Chain Monte Carlo Simulations for Chronological Modelling

Statistical analysis of archaeological dates and groups of dates. This package allows to post-process Markov Chain Monte Carlo (MCMC) simulations from 'ChronoModel' <https://chronomodel.com/>, 'Oxcal' <https://c14.arch.ox.ac.uk/oxcal.html> or 'BCal' <https://bcal.shef.ac.uk/>. It provides functions for the study of rhythms of the long term from the posterior distribution of a series of dates (tempo and activity plot). It also allows the estimation and visualization of time ranges from the posterior distribution of groups of dates (e.g. duration, transition and hiatus between successive phases) as described in Philippe and Vibet (2020) <doi:10.18637/jss.v093.c01>.

Maintained by Anne Philippe. Last updated 12 months ago.

archaeology bayesian-statistics geochronology markov-chain radiocarbon-dates

10 stars 6.90 score 66 scripts

jrvarma

jrvFinance:Basic Finance; NPV/IRR/Annuities/Bond-Pricing; Black Scholes

Implements the basic financial analysis functions similar to (but not identical to) what is available in most spreadsheet software. This includes finding the IRR and NPV of regularly spaced cash flows and annuities. Bond pricing and YTM calculations are included. In addition, Black Scholes option pricing and Greeks are also provided.

Maintained by Jayanth Varma. Last updated 3 years ago.

12 stars 5.94 score 48 scripts 1 dependents

filipezabala

voice:Voice Analysis, Speaker Recognition and Mood Inference via music theory

Voice analysis, speaker recognition and mood inference via music theory.

Maintained by Zabala Filipe J.. Last updated 12 days ago.

20 stars 5.64 score 88 scripts

rmcd1024

derivmkts:Functions and R Code to Accompany Derivatives Markets

A set of pricing and expository functions that should be useful in teaching a course on financial derivatives.

Maintained by Robert McDonald. Last updated 3 years ago.

36 stars 5.20 score 75 scripts

benrenard

musicXML:Data Sonification using 'musicXML'

A set of tools to facilitate data sonification and handle the 'musicXML' format <https://usermanuals.musicxml.com/MusicXML/Content/XS-MusicXML.htm>. Several classes are defined for basic musical objects such as note pitch, note duration, note, measure and score. Moreover, sonification utilities functions are provided, e.g. to map data into musical attributes such as pitch, loudness or duration. A typical sonification workflow hence looks like: get data; map them to musical attributes; create and write the 'musicXML' score, which can then be further processed using specialized music software (e.g. 'MuseScore', 'GuitarPro', etc.). Examples can be found in the blog <https://globxblog.github.io/>, the presentation by Renard and Le Bescond (2022, <https://hal.science/hal-03710340v1>) or the poster by Renard et al. (2023, <https://hal.inrae.fr/hal-04388845v1>).

Maintained by Benjamin Renard. Last updated 1 months ago.

musicxml sonification

4.30 score 8 scripts

langenbergstefan

sound:A Sound Interface for R

Basic functions for dealing with wav files and sound samples.

Maintained by Stefan Langenberg. Last updated 1 years ago.

3.79 score 124 scripts

jtextor

celltrackR:Motion Trajectory Analysis

Methods for analyzing (cell) motion in two or three dimensions. Available measures include displacement, confinement ratio, autocorrelation, straightness, turning angle, and fractal dimension. Measures can be applied to entire tracks, steps, or subtracks with varying length. While the methodology has been developed for cell trajectory analysis, it is applicable to anything that moves including animals, people, or vehicles. Some of the methodology implemented in this packages was described by: Beauchemin, Dixit, and Perelson (2007) <doi:10.4049/jimmunol.178.9.5505>, Beltman, Maree, and de Boer (2009) <doi:10.1038/nri2638>, Gneiting and Schlather (2004) <doi:10.1137/S0036144501394387>, Mokhtari, Mech, Zitzmann, Hasenberg, Gunzer, and Figge (2013) <doi:10.1371/journal.pone.0080808>, Moreau, Lemaitre, Terriac, Azar, Piel, Lennon-Dumenil, and Bousso (2012) <doi:10.1016/j.immuni.2012.05.014>, Textor, Peixoto, Henrickson, Sinn, von Andrian, and Westermann (2011) <doi:10.1073/pnas.1102288108>, Textor, Sinn, and de Boer (2013) <doi:10.1186/1471-2105-14-S6-S10>, Textor, Henrickson, Mandl, von Andrian, Westermann, de Boer, and Beltman (2014) <doi:10.1371/journal.pcbi.1003752>.

Maintained by Johannes Textor. Last updated 7 months ago.

3.08 score 6 scripts

vald

timetools:Seasonal/Sequential (Instants/Durations, Even or not) Time Series

Objects to manipulate sequential and seasonal time series. Sequential time series based on time instants and time duration are handled. Both can be regularly or unevenly spaced (overlapping duration are allowed). Only POSIX* format are used for dates and times. The following classes are provided : 'POSIXcti', 'POSIXctp', 'TimeIntervalDataFrame', 'TimeInstantDataFrame', 'SubtimeDataFrame' ; methods to switch from a class to another and to modify the time support of series (hourly time series to daily time series for instance) are also defined. Tools provided can be used for instance to handle environmental monitoring data (not always produced on a regular time base).

Maintained by Vladislav Navel. Last updated 6 days ago.

1.08 score 12 scripts