R/04-catalogue_functions.R
as_valueType.RdAttributes a valueType to an object, that can be a vector, or in a data frame using dplyr::mutate.
as_valueType(x, valueType = "text")Object to be coerced. Can be a vector.
A character string of the valueType used to coerce x.
The object coerced accordingly to the input valueType.
The valueType is a declared property of a variable that is required in certain functions to determine handling of the variables. Specifically, valueType refers to the OBiBa data type of a variable. The valueType is specified in a data dictionary in a column 'valueType' and can be associated with variables as attributes. Acceptable valueTypes include 'text', 'integer', 'decimal', 'boolean', datetime', 'date'. The full list of OBiBa valueType possibilities and their correspondence with R data types are available using valueType_list. The valueType can be used to coerce the variable to the corresponding data type.
{
# use madshapR_examples provided by the package
dataset <- madshapR_examples$`dataset_example`
as_valueType(head(dataset$dob),'date')
# as_valueType is compatible with tidyverse syntax
library(dplyr)
dataset <-
tibble(mtcars) %>%
mutate(cyl = as_valueType(cyl,'integer'))
head(dataset)
}
#> # A tibble: 6 × 11
#> mpg cyl disp hp drat wt qsec vs am gear carb
#> <dbl> <int> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl>
#> 1 21 6 160 110 3.9 2.62 16.5 0 1 4 4
#> 2 21 6 160 110 3.9 2.88 17.0 0 1 4 4
#> 3 22.8 4 108 93 3.85 2.32 18.6 1 1 4 1
#> 4 21.4 6 258 110 3.08 3.22 19.4 1 0 3 1
#> 5 18.7 8 360 175 3.15 3.44 17.0 0 0 3 2
#> 6 18.1 6 225 105 2.76 3.46 20.2 1 0 3 1