G Data Frame Properties
A database of the collection is maintained in a single file of comma-separated variables which can be read in by any number of editors or computer programs. The programming language R (R Core Team 2021) is used to query and manipulate the data from this file and to generate all the tables for this site. The site itself is generated through the use of the bookdown package in R (Xie 2016) and is processed through the user interface Rstudio (RStudio 2019).
The data file is read into R to create a “data frame”; a summary of its present properties is produced below.
## Maker Model circa Year
## Length :431 Length :431 Length :431 Length :431
## N.unique : 86 N.unique :330 N.unique : 2 N.unique :153
## N.blank : 0 N.blank : 0 N.blank :322 N.blank : 0
## Min.nchar: 2 Min.nchar: 1 Min.nchar: 0 Min.nchar: 4
## Max.nchar: 34 Max.nchar: 48 Max.nchar: 2 Max.nchar: 9
##
## Serial Type Style1 Style2
## Length :431 Length :431 Length :431 Length :431
## N.unique :135 N.unique : 4 N.unique : 4 N.unique : 52
## N.blank :295 N.blank : 0 N.blank : 0 N.blank : 0
## Min.nchar: 0 Min.nchar: 1 Min.nchar: 1 Min.nchar: 1
## Max.nchar: 9 Max.nchar: 1 Max.nchar: 1 Max.nchar: 5
##
## L0 L Lx Mat
## Min. : 2.00 Min. : 2.00 Min. : 2.000 Length :431
## 1st Qu.: 8.00 1st Qu.: 10.00 1st Qu.: 8.000 N.unique : 9
## Median : 10.00 Median : 10.00 Median :10.000 N.blank : 0
## Mean : 12.97 Mean : 13.65 Mean : 9.604 Min.nchar: 2
## 3rd Qu.: 10.00 3rd Qu.: 10.00 3rd Qu.:10.000 Max.nchar: 2
## Max. :500.00 Max. :500.00 Max. :48.000
## Case ScFr ScBk Country
## Length :431 Length :431 Length :431 Length :431
## N.unique : 9 N.unique :224 N.unique :148 N.unique : 10
## N.blank : 0 N.blank : 0 N.blank : 90 N.blank : 0
## Min.nchar: 2 Min.nchar: 1 Min.nchar: 0 Min.nchar: 2
## Max.nchar: 9 Max.nchar:111 Max.nchar: 73 Max.nchar: 4
##
## Notes References imFile AcqDate
## Length :431 Length :431 Length :431 Min. :19720901
## N.unique :424 N.unique :252 N.unique :431 1st Qu.:20200801
## N.blank : 0 N.blank : 6 N.blank : 0 Median :20210913
## Min.nchar: 8 Min.nchar: 0 Min.nchar: 9 Mean :20205379
## Max.nchar:374 Max.nchar:314 Max.nchar: 35 3rd Qu.:20231058
## Max. :20260615
## AccNum DataLink ModLnkNew PicL
## Length :431 Length :431 Length :431 Length :431
## N.unique :431 N.unique :431 N.unique :431 N.unique :431
## N.blank : 0 N.blank : 0 N.blank : 0 N.blank : 0
## Min.nchar: 10 Min.nchar: 26 Min.nchar: 42 Min.nchar: 28
## Max.nchar: 11 Max.nchar: 73 Max.nchar: 89 Max.nchar: 54
## Levels of variable Type: C, H, L, S
Levels of variable Style1: A, B, E, P
Levels of variable Style2: a, at, b, blptx, bm, bp, c, d, e, ex, g, k, km, l, ld, lo, lptvx, lptx, lt, ltvx, ltx, ltxb, lvx, lx, m, mb, mt, n, o, p, pb, pd, pex, ph, phx, pr, prz, pt, px, q, qx, r, rp, s, sp, spw, sw, t, tx, vld, w, z
Levels of variable Mat: Al, bb, br, iv, Mg, pl, pp, ss, wd
Levels of variable L0: 2, 3, 3.5, 3.75, 4, 5, 5.5, 6, 6.3, 6.5, 7, 7.5, 8, 9, 10, 10.25, 11, 12, 14, 15, 16, 17, 20, 22, 24, 26, 27, 28, 30, 31, 40, 50, 60, 66, 360, 468, 500
Levels of variable Country: AUS, CHN, DEN, EGER, FRA, GER, JPN, UK, USA, USSR
Other informational components will be added as time permits, such as better references to established Oughtred Society articles, more complete sets of pictures of the rules, whether instructions are included with the rule, etc.
For more information about creating a web site of this sort using Rstudio and the bookdown package a Bookdown Example is provided to give one a head-start.