ConvertDataTableColumns: ConvertDataTableColumns

In nextpagesoft/hivEstimatesAccuracyReloaded: Improves Accuracy of HIV Estimates in EU/EEA Countries

Description

Converts columns of a data.table object to specified classes. The transformation is made by reference, thus the changes are made directly to the object passed in and no copies are made.

Usage

ConvertDataTableColumns(object, columnDefs, levelsFunc = NULL, ...)

Arguments

object	A data.table object whose column classes are to be converted
columnDefs	A list of column class definitions in a form "[ColumnName] = [ColumnClass]"
levelsFunc	Function used to initialize levels of factor columns. (def: NULL)
...	Additional arguments passed to levelsFunc.

Examples

object <- data.table::data.table(RecordId = c("1", "2"), CD4 = c("233", "459"))
# Column definitions as named vector
columnDefs <- c(RecordId = "integer", CD4 = "numeric")
# Check class of columns before conversion
sapply(object, class)
ConvertDataTableColumns(object, columnDefs)
# Check class of columns after conversion
sapply(object, class)

nextpagesoft/hivEstimatesAccuracyReloaded documentation built on March 14, 2020, 7:06 a.m.