Utility Function to Prepare Exponential Fitted Edges of Trapezoid

Called by optram_wetdry_coefficients to prepare exponential curve along trapezoid edges. Calculates the intercept and slope of both wet and dry edges and updates the edges data.frame with these exp fitted values. Not exported.

Usage

exponential_coefficients(df, output_dir)

Arguments

df,

data.frame, values of VI and STR along edges of trapezoid

output_dir,

string, path to save coefficients CSV file

Value

df, data.frame, the trapezoid line edge points with fitted wet/dry values added

Note

Three CSV files are saved:

• the regressions coefficients,

• the trapezoid edge points

• RMSE of the fitted curve

Examples

if (FALSE) { # \dontrun{
  df <- read.csv(system.file("extdata", "trapezoid_edges.csv",
                package = "rOPTRAM"))
  output_dir <- tempdir()
  coeffs <- rOPTRAM::exponential_coefficients(df, output_dir)
  coeffs
} # }