add_trophic_status: Add columns for trophic status

In PatrickEslick/CyAN: Interact with CyAN data

Description

Add three columns for trophic status, where it is possible. Trophic status can be calculated from secchi depth, chlorophyll-a, or total phosphorus

Usage

add_trophic_status(cyan_data)

Arguments

cyan_data

a data frame from get_cyan_data with collect = TRUE

Value

cyan_data with three additional columns. TROPHIC_STATUS_INDEX giving the numerical trophic status index, TROPHIC_STATUS - indicating which trophic category that index falls into, and the method used to calculate the trophic stats. TROPHIC_STATUS_METHOD

Examples

#Connect to the example database bundled with CyAN
path <- system.file("extdata", "example.db", package = "CyAN")
db_connection <- connect_cyan(path)

#Get all of the chlorophyll and chlorophyll-a data (parameter id P0051 & P0054)
#or the state of Kansas in the year 2016
ks_chl_2016 <- get_cyan_data(db_connection, collect = TRUE,
                             years = 2016,
                             parameters = c("P0051", "P0054"),
                             states = "KS")

#Add trophic status columns
ks_chl_2016_wtrophic <- add_trophic_status(ks_chl_2016)

PatrickEslick/CyAN documentation built on Oct. 2, 2019, 5:50 p.m.