From 64c4b6004da65cf9eb1a0549df7cc9eb7510f67f Mon Sep 17 00:00:00 2001 From: "taha@asks2" Date: Sun, 2 Jul 2023 21:10:23 +0200 Subject: [PATCH] Added function to format numbers with their SI unit prefix + Rewrote package title and description to make it clearer + Fleshed out the README + bumped minor version number + added GPL-3 LICENSE file + removed what must have been unnecessary package dependencies from imports (knitr, xtable) + added xtable to suggests field instead (seems to be enough) + deleted commented out, long-deprecated, functions nm2eV() and eV2nm() + fixed link to mirrored repo on git.solarchemist.se --- DESCRIPTION | 16 +- LICENSE | 675 ++++++++++++++++++++++++++++++++++++++++++ NAMESPACE | 1 + R/common.R | 2 +- R/numeric.R | 66 +++++ R/unit-converters.R | 30 -- README.md | 43 ++- man/numbers2prefix.Rd | 32 ++ 8 files changed, 820 insertions(+), 45 deletions(-) create mode 100644 LICENSE create mode 100644 man/numbers2prefix.Rd diff --git a/DESCRIPTION b/DESCRIPTION index c0c2f1b..67aface 100644 --- a/DESCRIPTION +++ b/DESCRIPTION @@ -1,15 +1,15 @@ Package: common Type: Package -Title: solarchemist's collection of common R functions -Version: 0.0.2 -Description: solarchemist's collection of commonly-used R functions and scripts. +Title: A collection of solarchemist's common R functions +Version: 0.1.0 +Description: A package containing solarchemist's commonly-used R functions and scripts. 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If not, see . + +Also add information on how to contact you by electronic and paper mail. + + If the program does terminal interaction, make it output a short +notice like this when it starts in an interactive mode: + + {project} Copyright (C) {year} {fullname} + This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. + This is free software, and you are welcome to redistribute it + under certain conditions; type `show c' for details. + +The hypothetical commands `show w' and `show c' should show the appropriate +parts of the General Public License. Of course, your program's commands +might be different; for a GUI interface, you would use an "about box". + + You should also get your employer (if you work as a programmer) or school, +if any, to sign a "copyright disclaimer" for the program, if necessary. +For more information on this, and how to apply and follow the GNU GPL, see +. + + The GNU General Public License does not permit incorporating your program +into proprietary programs. If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. + diff --git a/NAMESPACE b/NAMESPACE index 379adcf..4e97d06 100644 --- a/NAMESPACE +++ b/NAMESPACE @@ -15,6 +15,7 @@ export(as.radians) export(int2padstr) export(is.wholenumber) export(molarity2mass) +export(numbers2prefix) export(numbers2swedish) export(numbers2words) export(pascal2torr) diff --git a/R/common.R b/R/common.R index 9d5f982..ad3ac29 100644 --- a/R/common.R +++ b/R/common.R @@ -31,7 +31,7 @@ simpleCap <- function(x) { #' abscoeef <- LoadRData2Variable(url="http://public.solarchemist/data/file.rda") #' } LoadRData2Variable <- function(path, url = "") { - # BEWARE: this function does **not** check for all possible + # BEWARE: this function does **not** check for all possible # variations in the two args. Someone should really improve on that. if (url == "") { return(eval(parse(text = load(path)))) diff --git a/R/numeric.R b/R/numeric.R index e320839..db57903 100644 --- a/R/numeric.R +++ b/R/numeric.R @@ -42,3 +42,69 @@ roundup <- function(x, nearest=1000) { is.wholenumber <- function(x, tol = .Machine$double.eps^0.5) { abs(x - round(x)) < tol } + + +#' Format numbers using SI unit prefixes +#' +#' Using SI unit prefixes is a more compact way to write very large or very small +#' numbers which can sometimes be useful. This function takes a number (or a vector +#' of numbers) and returns the equivalent value expressed using the nearest prefix. +#' My thanks to https://stackoverflow.com/users/843265/tomelgin for posting the +#' code that this function was based on (see first link below). +#' +#' @seealso https://stackoverflow.com/questions/11340444/convert-numbers-to-si-prefix +#' @seealso https://stackoverflow.com/questions/28159936/format-numbers-with-million-m-and-billion-b-suffixes +#' @seealso https://www.nist.gov/pml/owm/metric-si-prefixes +#' +#' @param number number, numeric vector +#' @param rounding rounds number to nearest integer (default FALSE), boolean +#' @param digits if rounding=FALSE, lets you specify significant figures (default 6), numeric +#' +#' @return number with SI prefix (as character string) +#' @export +numbers2prefix <- function(number, rounding = FALSE, digits = ifelse(rounding, NA, 6)) { + # https://www.nist.gov/pml/owm/metric-si-prefixes + # https://en.wikipedia.org/wiki/Unit_prefix + # https://blog.ansi.org/anab/new-prefixes-si-ronto-quecto-ronna-quetta + lut <- tibble::tribble( + ~factor, ~symbol, + 1e-30, "q", # quecto + 1e-27, "r", # ronto + 1e-24, "y", # yocto + 1e-21, "z", # zepto + 1e-18, "a", # atto + 1e-15, "f", # femto + 1e-12, "p", # pico + 1e-09, "n", # nano + 1e-06, "\u00B5", # micro + 1e-03, "m", # milli + 1e-02, "c", # centi + 1e-01, "d", # deci + 1, "", + 1e03, "k", # kilo + 1e06, "M", # mega + 1e09, "G", # giga + 1e12, "T", # tera + 1e15, "P", # peta + 1e18, "E", # exa + 1e21, "Z", # zetta + 1e24, "Y", # yotta + 1e27, "R", # ronna + 1e30, "Q") # quetta + + # note that findInterval() requires vec to be sorted non-decreasingly and not contain NAs + ix <- findInterval(x = number, vec = lut$factor) + if (ix > 0 && ix < length(lut$factor) && lut$factor[ix] != 1) { + if (rounding == TRUE && !is.numeric(digits)) { + sistring <- paste(round(number / lut$factor[ix]), lut$symbol[ix]) + } else + if (rounding == TRUE || is.numeric(digits)) { + sistring <- paste(signif(number / lut$factor[ix], digits), lut$symbol[ix]) + } else { + sistring <- paste(number / lut$factor[ix], lut$symbol[ix]) + } + } else { + sistring <- as.character(number) + } + return(sistring) +} diff --git a/R/unit-converters.R b/R/unit-converters.R index 5e99865..5c75d74 100644 --- a/R/unit-converters.R +++ b/R/unit-converters.R @@ -1,33 +1,3 @@ -# nm2eV <- function(nm) { -# ## Depends on: -# ## chepec/chetex/common/R/sunlight/solarconstants.R -# # Converts wavelength in nm to energy in eV -# # -# sun.constants <- solar.constants() -# -# eV <- -# sun.constants["h.eV", "value"] * -# 1E9 * sun.constants["c", "value"] / nm -# -# return(eV) -# } - - -# eV2nm <- function(eV) { -# ## Depends on: -# ## chepec/chetex/common/R/sunlight/solarconstants.R -# # Converts energy in eV to wavelength in nm -# # -# sun.constants <- solar.constants() -# -# nm <- -# sun.constants["h.eV", "value"] * -# 1E9 * sun.constants["c", "value"] / eV -# -# return(nm) -# } - - #' Convert wavelength to wavenumber #' #' Converts wavelength (nm) to wavenumber (cm-1) diff --git a/README.md b/README.md index 6a624cf..5d415f4 100644 --- a/README.md +++ b/README.md @@ -1,15 +1,46 @@ -# A collection of general functions and data +# My collection of R utility functions -Includes common numerical functions and some LaTeX-specific functions. +Includes common utilities and converters as well as some functions tailored +heavily towards my own use cases. + +If you find something you like, feel free to copy it and use it for your own work. +If you spot a bug, open an issue or [let me know](https://solarchemist.se/contact) +(with my appreciation!). Note that the package is named `common`, despite the repository being name `R-common`. -Sorry about that (this was one of the very first packages I created, and I haven't +Sorry about that (this was one of the very first packages I created, and I haven't gotten around to fixing the naming mismatch yet). -[This repository is mirrored on my Gitea](https://git.solarchemist.se/taha/common). +[This repository is mirrored on git.solarchemist.se](https://git.solarchemist.se/taha/R-common). + + +## Install this package + +To use this package, install it from this repo: + +``` +install.packages("remotes") +remotes::install_github("solarchemist/R-common") +``` + + +## Develop this package + +Check out the source code from this repo: +``` +git clone https://github.com/solarchemist/R-common.git +``` +I suggest the following package rebuild procedure: ++ Run `devtools::check()`. + Should complete with no warnings, errors or notes: +``` +── R CMD check results ─────────────────────────────────────── common 0.1.0 ──── +Duration: 8.1s -## NOTE: the electrochemical reference electrode functions +0 errors ✔ | 0 warnings ✔ | 0 notes ✔ +``` ++ If necessary, run `devtools::document()` to update the documentation. -have **moved** to the [`refelectrodes` package](https://github.com/chepec/refelectrodes)! +Contributions are welcome, no matter whether code, bug reports or suggestions! diff --git a/man/numbers2prefix.Rd b/man/numbers2prefix.Rd new file mode 100644 index 0000000..cd3e839 --- /dev/null +++ b/man/numbers2prefix.Rd @@ -0,0 +1,32 @@ +% Generated by roxygen2: do not edit by hand +% Please edit documentation in R/numeric.R +\name{numbers2prefix} +\alias{numbers2prefix} +\title{Format numbers using SI unit prefixes} +\usage{ +numbers2prefix(number, rounding = FALSE, digits = ifelse(rounding, NA, 6)) +} +\arguments{ +\item{number}{number, numeric vector} + +\item{rounding}{rounds number to nearest integer (default FALSE), boolean} + +\item{digits}{if rounding=FALSE, lets you specify significant figures (default 6), numeric} +} +\value{ +number with SI prefix (as character string) +} +\description{ +Using SI unit prefixes is a more compact way to write very large or very small +numbers which can sometimes be useful. This function takes a number (or a vector +of numbers) and returns the equivalent value expressed using the nearest prefix. +My thanks to https://stackoverflow.com/users/843265/tomelgin for posting the +code that this function was based on (see first link below). +} +\seealso{ +https://stackoverflow.com/questions/11340444/convert-numbers-to-si-prefix + +https://stackoverflow.com/questions/28159936/format-numbers-with-million-m-and-billion-b-suffixes + +https://www.nist.gov/pml/owm/metric-si-prefixes +}