An empirical seed transfer zone — acth7 • eSTZwritR

This data set is from Johnson et al. 2017, and slightly modified by us. It is an eSTZ of Eriocoma thurberiana. Johnson, R. C., E. A. Leger, and Ken Vance-Borland. "Genecology of Thurber’s Needlegrass (Achnatherum thurberianum [Piper] Barkworth) in the Western United States." Rangeland Ecology & Management 70.4 (2017): 509-517.

Format

A data frame/tibble/sf with 2 columns

ID: A unique ID for each each polygon, note this includes gaps in the numbering.
GRIDCODE: From an ESRI raster, the classification output used during creating the product.
area_ha: From ESRI calulcated area of each polygon.
zone: STZ defined by the authors from the GRIDCODE.
geometry: sf geometry column

Examples

acth7 <- sf::st_read(file.path(
   system.file(package="eSTZwritR"), "extdata", 'ACTH7.gpkg')
)
#> Reading layer `ACTH7' from data source 
#>   `/home/runner/work/_temp/Library/eSTZwritR/extdata/ACTH7.gpkg' 
#>   using driver `GPKG'
#> Simple feature collection with 4967 features and 4 fields
#> Geometry type: MULTIPOLYGON
#> Dimension:     XY
#> Bounding box:  xmin: -121.5447 ymin: 36.53208 xmax: -111.0114 ymax: 46.35708
#> Geodetic CRS:  WGS 84
plot(acth7[,4])