load_data_herblayer: retrieve species specific vegetation data from 'Fieldmap'...

In inbo/forrescalc: Calculation of Aggregated Values on Dendrometry, Regeneration and Vegetation of Forests, Starting from Individual Tree Measures from Fieldmap

retrieve species specific vegetation data from Fieldmap database

Description

This function queries the given database to retrieve data on vegetation (ready for use in calculate_vegetation() function). year_main_survey 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)

Usage

load_data_herblayer(
  database,
  plottype = NA,
  forest_reserve = NA,
  processed = TRUE
)

Arguments

database	name of Fieldmap/Access database (with specific Fieldmap structure) including path
plottype	possibility to select only data for a certain plot type, e.g. 'CP' for Circular plot or 'CA' for Core area (the default NA means that data from all plots are retrieved)
forest_reserve	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)
processed	Should only processed and surveyed data be added? Defaults to TRUE (yes).

Value

Dataframe with vegetation data on the species level ('herb layer'), containing columns as species, coverage_id, browse_index_id, date_vegetation (= date of survey of specific species, different for spring flora and other flora in the same plot), year (= year of survey of specific species, possibly different for spring flora and other flora), ....

Examples

library(forrescalc)
# (add path to your own fieldmap database here)
path_to_fieldmapdb <-
  system.file("example/database/mdb_bosres.sqlite", package = "forrescalc")
load_data_herblayer(path_to_fieldmapdb)

inbo/forrescalc documentation built on Sept. 28, 2024, 11:45 a.m.