Get CV values.

get_cv_data() is a wrapper function to return cv (coefficient of variation) calculated with filter_cv().

Usage

get_cv_data(mpactr_object)

Arguments

mpactr_object

The mpactr object that is created by calling the import_data() function.

Value

a data.table reporting the mean and median coefficient of variation for each input ion.

Examples

data <- import_data(
  example_path("coculture_peak_table.csv"),
  example_path("metadata.csv"),
  format = "Progenesis"
)

data_filter <- filter_cv(data,
  cv_threshold = 0.01,
)
#> ℹ Parsing 1303 peaks for replicability across technical replicates.
#> ✔ 1261 ions failed the cv_filter filter, 42 ions remain.

cv <- get_cv_data(data_filter)
head(cv)
#>    Compound  Biological_Group Sample_Code PassesCvFilter          cv
#>      <char>            <char>      <char>         <lgcl>       <num>
#> 1:        1            Blanks     UM1846B          FALSE  0.86736617
#> 2:        1  JC28 monoculture     UM1847B          FALSE  0.01656991
#> 3:        1   JC1 monoculture     UM1848B          FALSE -1.00000000
#> 4:        1 ANG18 monoculture     UM1849B          FALSE  0.03502637
#> 5:        1 ANGDT monoculture     UM1850B          FALSE  0.09073311
#> 6:        1         Coculture     UM1852B          FALSE  0.05760617