| Title: | Data Set of Trig Points in Great Britain in British National Grid Coordinates |
| Version: | 1.0.0 |
| Description: | A complete data set of historic GB trig points in British National Grid (OSGB36) coordinate reference system. Trig points (aka triangulation stations) are fixed survey points used to improve the accuracy of map making in Great Britain during the 20th Century. Trig points are typically located on hilltops so still serve as a useful navigational aid for walkers and hikers today. |
| License: | MIT + file LICENSE |
| Encoding: | UTF-8 |
| LazyData: | true |
| RoxygenNote: | 6.1.0 |
| Depends: | R (≥ 2.10) |
| Imports: | sf, tibble |
| BugReports: | https://github.com/philmikejones/trigpoints/issues |
| URL: | https://philmikejones.github.io/trigpoints/ |
| NeedsCompilation: | no |
| Packaged: | 2018-09-15 09:13:12 UTC; lw1pj |
| Author: | Phil Mike Jones 
[aut, cre] |
| Maintainer: | Phil Mike Jones <philmikejones@gmail.com> |
| Repository: | CRAN |
| Date/Publication: | 2018-09-21 22:40:03 UTC |
Trig points.
Description
List of all UK trig points Contains OS data © Crown copyright and database right (2018)
Usage
trigpoints
Format
A data frame with 16 variables:
- name
Station name, assigned by surveyor
- station
Further station details
- new_name
Further station details
- height
Height above Ordnance Datum in metres
- order
Level of precision to which the station was observed. 1 is highest; 4 is lowest
- type
Type of station
- sec_com_blk
Which computation block the station was computed and adjusted in
- com_date
Year of last computation
- maintained
Date of last maintenance
- lvl_class
Precision of the levelling
- lvl_date
Date of levelling
- lvl_datum
Datum the levelling refers to
- destroyed
1 = destroyed; 0 = exists
- notes
Additional notes
- geometry
Coordinates in OSGB36 British National Grid (easting, northing)
Source
https://www.ordnancesurvey.co.uk/gps/legacy-control-information/triangulation-stations