| Title: | Geologic Pattern Data from FGDC Used in 'deeptime' |
| Version: | 1.0.0 |
| Maintainer: | William Gearty <willgearty@gmail.com> |
| Description: | Geologic pattern data from https://ngmdb.usgs.gov/fgdc_gds/geolsymstd.php. Access functions are provided in the accompanying package 'deeptime'. |
| URL: | http://williamgearty.com/deeptimedata/, https://github.com/willgearty/deeptimedata |
| BugReports: | https://github.com/willgearty/deeptimedata/issues |
| Depends: | R (≥ 2.10) |
| License: | GPL (≥ 3) |
| Encoding: | UTF-8 |
| RoxygenNote: | 7.3.2 |
| LazyData: | true |
| Suggests: | grImport2, rsvg, usethis |
| NeedsCompilation: | no |
| Packaged: | 2024-10-24 17:40:53 UTC; willg |
| Author: | William Gearty 
[aut, cre, cph] |
| Repository: | CRAN |
| Date/Publication: | 2024-10-25 09:30:02 UTC |
deeptimedata: Geologic Pattern Data from FGDC Used in 'deeptime'
Description
Geologic pattern data from https://ngmdb.usgs.gov/fgdc_gds/geolsymstd.php. Access functions are provided in the accompanying package 'deeptime'.
Author(s)
Maintainer: William Gearty willgearty@gmail.com (ORCID) [copyright holder]
See Also
Useful links:
Report bugs at https://github.com/willgearty/deeptimedata/issues
FGDC Geologic Pattern Data
Description
Geologic map and lithology patterns as defined in the FGDC Digital Cartographic Standard for Geologic Map Symbolization by the U.S. Geological Survey and the Geologic Data Subcommittee (GDS) of the Federal Geographic Data Committee (FGDC). deeptime::geo_grob() and
deeptime::geo_pattern() should be used to retrieve and modify an individual
pattern as a grob object or GridPattern
object, respectively.
Usage
geo_grobs
Format
A list, where each item corresponds to a geologic pattern stored as a
gTree object as returned by grImport2::pictureGrob().
The names of the list correspond to the pattern codes.
Details
For specific pattern codes, see the "pattern numbers" in the full pattern chart.
Daven Quinn has also assembled more accessible documentation of the map patterns/codes
and lithology patterns/codes.
rmacrostrat::def_lithologies() can also be used to look up pattern codes
for various lithologies (see the "fill" column). Note that patterns
associated with color variants (e.g., "101-M") are not included but can be
created using deeptime::geo_grob().
These patterns were originally processed and optimized by Daven Quinn and are hosted on GitHub.
Source
https://ngmdb.usgs.gov/fgdc_gds/geolsymstd.php via https://github.com/davenquinn/geologic-patterns