Detect and impute outliers with respect to a maximum level of radiation (Ct)
clearsky_outliers(x, Ct, date, threshold = 1e-04, quiet = FALSE)Numeric vector, time series of solar radiation.
Numeric vector, time series of fitted clear sky radiation.
Character or Date vector, time series of dates used to precisely impute solar radiation according to the realized values in the same day of the year.
Numeric, scalar, threshold value used for imputation. Default is 0.0001.
Logical.
The function will detect the observations for which x > Ct, x < 0 or is.na(x). Then, if
x < 0If a value is below 0 for a day it will be imputed to be equal to min(x) for that day
x > CtIf a value is above the maximum clear sky Ct it will be imputed to be Ct*(1-threshold)
is.na(x)If a value is NA it will be imputed to be the average mean(x) for that day.
Version 1.0.0
clearsky_outliers(c(1,2,3), 2)
#> Outliers: 2 (67 %)
#> $x
#> [1] 1.0000 1.9998 1.9998
#>
#> $original
#> [1] 2 3
#>
#> $imputed
#> [1] 1.9998 1.9998
#>
#> $index
#> [1] 2 3
#>
#> $index_type
#> $index_type$na
#> integer(0)
#>
#> $index_type$lo
#> integer(0)
#>
#> $index_type$hi
#> [1] 2 3
#>
#>
#> $date
#> [1] NA
#>
#> $n
#> [1] 2
#>
#> $MAPE
#> [1] 11.11667
#>
#> $MSE
#> [1] 0.577408
#>
#> $threshold
#> [1] 1e-04
#>