Added functions to convert arcminutes and arcseconds <-> degrees

Very simple stuff. Would have been nice if there was an easy
way to get arcminutes and arcseconds notation to/from degrees,
but that's a whole other can of worms. No such R packages exist
as far as I can tell. Where are all the astronomy peeps?

DESCRIPTION

@@ -1,7 +1,7 @@
 Package: common
 Type: Package
 Title: A collection of solarchemist's common R functions
-Version: 0.1.1
+Version: 0.1.2
 Description: A package containing solarchemist's commonly-used R functions and scripts.
 Authors@R: person("Taha", "Ahmed", email = "taha@chepec.se", role = c("aut", "cre"))
 License: GPL-3 + file LICENSE

NAMESPACE

@@ -10,8 +10,12 @@ export(ProvideSampleId)
 export(SubfigureGenerator)
 export(SubstrateHistory)
 export(TabularXtableHeader)
+export(amin2degrees)
 export(as.degrees)
 export(as.radians)
+export(asec2degrees)
+export(degrees2amin)
+export(degrees2asec)
 export(int2padstr)
 export(is.wholenumber)
 export(molarity2mass)

R/numeric.R

@@ -1,6 +1,62 @@
+#' Convert arcminutes to degrees
+#'
+#' Convert arcminutes to degrees
+#'
+#' @param x arcminutes, numeric
+#'
+#' @seealso https://en.wikipedia.org/w/index.php?title=Minute_and_second_of_arc&oldid=1159601591
+#'
+#' @return degrees, numeric
+#' @export
+amin2degrees <- function(x) {
+   return (x / 60)
+}
+
+
+#' Convert arcseconds to degrees
+#'
+#' Convert arcseconds to degrees
+#'
+#' @param x arcseconds, numeric
+#'
+#' @seealso https://en.wikipedia.org/w/index.php?title=Minute_and_second_of_arc&oldid=1159601591
+#'
+#' @return degrees, numeric
+#' @export
+asec2degrees <- function(x) {
+   return (common::amin2degrees(x / 60))
+}
+
+
+#' Convert degrees to arcminutes
+#'
+#' Convert degrees to arcminutes
+#'
+#' @param x degrees, numeric
+#'
+#' @return arcminutes, numeric
+#' @export
+degrees2amin <- function(x) {
+   return (60 * x)
+}
+
+
+#' Convert degrees to arcseconds
+#'
+#' Convert degrees to arcseconds
+#'
+#' @param x degrees, numeric
+#'
+#' @return arcseconds, numeric
+#' @export
+degrees2asec <- function(x) {
+   return (60 * common::degrees2amin(x))
+}
+
+
 #' Calculate area under a curve
 #'
-#' Numerically  calculate area under an arbitrary curve (defined by x, y coord pairs)
+#' Numerically calculate area under an arbitrary curve (defined by x, y coord pairs)
 #' using trapezodial integration. See Wikipedia for more info on trapz integration.
 #'
 #' @param x  vector (of length n)

README.md

@@ -36,7 +36,7 @@ I suggest the following package rebuild procedure:
 + Run `devtools::check()`.
   Should complete with no warnings, errors or notes:
 ```
-── R CMD check results ─────────────────────────────────────── common 0.1.1 ────
+── R CMD check results ─────────────────────────────────────── common 0.1.2 ────
 Duration: 8.1s
 
 0 errors ✔ | 0 warnings ✔ | 0 notes ✔

man/amin2degrees.Rd

@@ -0,0 +1,20 @@
+% Generated by roxygen2: do not edit by hand
+% Please edit documentation in R/numeric.R
+\name{amin2degrees}
+\alias{amin2degrees}
+\title{Convert arcminutes to degrees}
+\usage{
+amin2degrees(x)
+}
+\arguments{
+\item{x}{arcminutes, numeric}
+}
+\value{
+degrees, numeric
+}
+\description{
+Convert arcminutes to degrees
+}
+\seealso{
+https://en.wikipedia.org/w/index.php?title=Minute_and_second_of_arc&oldid=1159601591
+}

man/asec2degrees.Rd

@@ -0,0 +1,20 @@
+% Generated by roxygen2: do not edit by hand
+% Please edit documentation in R/numeric.R
+\name{asec2degrees}
+\alias{asec2degrees}
+\title{Convert arcseconds to degrees}
+\usage{
+asec2degrees(x)
+}
+\arguments{
+\item{x}{arcseconds, numeric}
+}
+\value{
+degrees, numeric
+}
+\description{
+Convert arcseconds to degrees
+}
+\seealso{
+https://en.wikipedia.org/w/index.php?title=Minute_and_second_of_arc&oldid=1159601591
+}

man/degrees2amin.Rd

@@ -0,0 +1,17 @@
+% Generated by roxygen2: do not edit by hand
+% Please edit documentation in R/numeric.R
+\name{degrees2amin}
+\alias{degrees2amin}
+\title{Convert degrees to arcminutes}
+\usage{
+degrees2amin(x)
+}
+\arguments{
+\item{x}{degrees, numeric}
+}
+\value{
+arcminutes, numeric
+}
+\description{
+Convert degrees to arcminutes
+}

man/degrees2asec.Rd

@@ -0,0 +1,17 @@
+% Generated by roxygen2: do not edit by hand
+% Please edit documentation in R/numeric.R
+\name{degrees2asec}
+\alias{degrees2asec}
+\title{Convert degrees to arcseconds}
+\usage{
+degrees2asec(x)
+}
+\arguments{
+\item{x}{degrees, numeric}
+}
+\value{
+arcseconds, numeric
+}
+\description{
+Convert degrees to arcseconds
+}

man/trapz.Rd

@@ -15,6 +15,6 @@ trapz(x, y)
 vector (of length n - 1)
 }
 \description{
-Numerically  calculate area under an arbitrary curve (defined by x, y coord pairs)
+Numerically calculate area under an arbitrary curve (defined by x, y coord pairs)
 using trapezodial integration. See Wikipedia for more info on trapz integration.
 }