load_data_herblayer.RdThis function queries the given database to retrieve data on vegetation (ready for use in calculate_vegetation function). Year_record refers to year of the main vegetation survey (source is table "vegetation"), while year refers to year of recording of that specific species (possibly different for spring flora; source is table "herblayer")
load_data_herblayer(database, plottype = NA, forest_reserve = NA)name of fieldmap/access database (with specific fieldmap structure) including path
possibility to select only data for a certain plot type, e.g. 'Circular plot' or 'Core area' (the default NA means that data from all plots are retrieved)
possibility to select only data for 1 forest reserve by giving the name of the forest reserve (the default NA means that data from all plots are retrieved)
Dataframe with vegetation data on the species level ('herb layer'), containing columns as species, coverage_id, browse_index_id, date_vegetation (= date of main vegetation survey), deviating_date (= for spring flora only, date of spring survey), year_record (= year of main vegetation survey), year (= year of survey of specific species, possibly different for spring flora and other flora), ....
if (FALSE) {
#change path before running
library(forrescalc)
load_data_herblayer("C:/MDB_BOSRES_selectieEls/FieldMapData_MDB_BOSRES_selectieEls.accdb")
}