added Beazley dataset

Author: lsteinmann

DESCRIPTION

@@ -9,4 +9,11 @@ License: CC BY-SA 4.0
 Encoding: UTF-8
 LazyData: true
 RoxygenNote: 7.1.0
-Suggests: testthat, devtools
+Suggests: 
+    testthat,
+    devtools,
+    knitr,
+    rmarkdown
+Depends: 
+    R (>= 2.10)
+VignetteBuilder: knitr

R/DAT_df.R

@@ -0,0 +1,44 @@
+#' datplot Testing data
+#'
+#' A test dataset containing a data.frame how it should ideally be arranged to work with datplot.
+#' Data are not real and illustrate some common problems such as lower and upper dating in the wrong columns.
+#'
+#' \itemize{
+#'   \item ID. Identifier of the Objects (has to be unique)
+#'   \item var. Grouping variable, such as a Type or a Findspot
+#'   \item DAT_min. Integer: lower range of the dating, BCE in negative numbers
+#'   \item DAT_max. Integer: uppder range of the dating, BCE in negative numbers
+#' }
+#'
+#' @docType data
+#' @keywords datasets
+#' @name DAT_df
+#' @usage data(DAT_df)
+#' @format A data frame with 5000 rows and 4 variables
+
+"DAT_df"
+NULL
+
+
+#' Beazley (sample of 1000)
+#'
+#' A test dataset containing a data.frame how it should ideally be arranged to work with datplot.
+#' Data are gathered from the Beazley Archive Pottery Database (BAPD) -- https://www.beazley.ox.ac.uk/pottery/default.htm
+#' and transformed to work with datplot
+#'
+#' \itemize{
+#'   \item Identifier (Vase.Number in BAPD)
+#'   \item Technique: Sample contains only red- or blackfigured objects
+#'   \item DAT_min. Integer: lower range of the dating, BCE in negative numbers
+#'   \item DAT_max. Integer: uppder range of the dating, BCE in negative numbers
+#' }
+#'
+#' @docType data
+#' @keywords datasets
+#' @name Beazley
+#' @usage data(Beazley)
+#' @format A data frame with 1000 rows and 4 variables
+#' @source https://www.beazley.ox.ac.uk/pottery/default.htm
+
+"Beazley"
+NULL