CanopyPercentCover: LPI canopy cover by transect

In nationalparkservice/mojn-sv-rpackage: QC, Analysis, and Visualization of Spring Vegetation Data

Description

LPI canopy cover by transect

Usage

CanopyPercentCover(conn, path.to.data, park, spring, field.season,
  data.source = "database")

Arguments

conn	Database connection generated from call to OpenDatabaseConnection(). Ignored if data.source is "local".
path.to.data	The directory containing the csv data exports generated from SaveDataToCsv(). Ignored if data.source is "database".
park	Optional. Four-letter park code to filter on, e.g. "MOJA".
spring	Optional. Spring code to filter on, e.g. "LAKE_P_BLUE0".
field.season	Optional. Field season name to filter on, e.g. "2019".
data.source	Character string indicating whether to access data in the spring veg database ("database", default) or to use data saved locally ("local"). In order to access the most up-to-date data, it is recommended that you select "database" unless you are working offline or your code will be shared with someone who doesn't have access to the database.

Details

Only includes data from visits labeled 'Primary.' Counts both plant canopy and other canopy (e.g. litter) as cover. Does not take into account the number of canopy layers, only presence/absence of canopy at a point. I.e., a point with a single plant counts the same as a point with multiple plants in multiple strata. Percent cover is calculated only from points at which data were collected - if only three points were recorded for a transect and one of them had canopy cover, that transect would have 33.3

Value

A tibble with columns Park, SpringCode, SpringName, FieldSeason, TransectNumber, CanopyPercentCover

nationalparkservice/mojn-sv-rpackage documentation built on Oct. 29, 2021, 7:13 p.m.