setcolsnull

a character vector of column names to be deleted

delete

a character vector of column names to keep;
the rest will be removed; <code>keep</code> overrides <code>delete</code>

keep

logical; if <code>TRUE</code>, also does <code>setcolorder</code> using
<code>keep</code>

colorder

logical; if <code>TRUE</code>, does not cause an error if any variable
name in <code>keep</code> or <code>delete</code> is missing; <code>soft = FALSE</code> useful
for programming sometimes

soft

Delete <code>data.table</code> columns if there


    Enables computation of various epidemiological statistics where the use of population data such as population counts and hazards is required. Relatively high computation speed achieved by using data.table.

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setcolsnull: Delete `data.table` columns if there

Description

Usage

Arguments