Truncate spline at zero if... — spline.truncate • PEcAn.uncertainty

Truncate spline at zero if P[x<0] < pnorm(-3) pnorm(-3) chosen as default value for min quantile because this is the default low end of range for the sensitivity analysis. This parameter could be determined based on minimum value in settings$sensitivity.analysis$quantiles

spline.truncate(x, min.quantile = stats::pnorm(-3))

Arguments

x: vector
min.quantile: threshold quantile for testing lower bound on variable

Value

either x or a vector with values < 0 converted to zero

Author

David LeBauer

Examples

set.seed(0)
x <- c(rgamma(998,1,1), rnorm(10))
min(x) # -0.5238
#> [1] -2.041882
min(PEcAn.uncertainty::spline.truncate(x))
#> [1] -2.041882