Convert values to different units

convert_values(x, from, to, messages)

Arguments

x: a numeric vector of values to convert
from: units to convert from
to: units to convert to
messages: should messages be printed when

Value

a numeric vector of the converted values

Details

Currently supported units for from and to are: c("ng/L", "ug/L", "mg/L", "g/L", "kg/L", "pH", "degC", "C", "CFU/dL", "MPN/dL", "CFU/100mL", "MPN/100mL", "CFU/g", "MPN/g", "CFU/mL", "MPN/mL", "Col.unit", "Rel", "NTU", "m", "uS/cm")

Examples


convert_values(1, "ug/L", "mg/L", messages = FALSE)
#> [1] 0.001

df <- data.frame(
  value = c(1.256, 5400000, 12300, .00098),
  units = c("mg/L", "ng/L", "ug/L", "g/L"),
  stringsAsFactors = FALSE
)
df
#>       value units
#> 1 1.256e+00  mg/L
#> 2 5.400e+06  ng/L
#> 3 1.230e+04  ug/L
#> 4 9.800e-04   g/L

df$units_mg_L <- convert_values(df$value, from = df$units, to = "mg/L", messages = FALSE)
df
#>       value units units_mg_L
#> 1 1.256e+00  mg/L      1.256
#> 2 5.400e+06  ng/L      5.400
#> 3 1.230e+04  ug/L     12.300
#> 4 9.800e-04   g/L      0.980