Summary
The query "setkey order r" can be answered based on the provided results. setkey reorders the rows of a data.table by the columns provided.
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Generally, the sort method used has developed over the years and has contributed to base R too.
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setindex creates an index for the provided columns. This index is simply an ordering vector of the dataset's rows according to the provided columns. This order vector is stored as…
setkey function - RDocumentation
rdocumentation.org
Summary
setkey reorders (i.e. sorts) the rows of a data.table by the columns provided. The sort method used has developed over the years and we have contributed to base R too; see sort . Generally
R: Create key on a data.table
r-project.org
setkey : Create key on a data table - R Package Documentation. rdrr.io. If setorder results in reordering of the rows of a keyed data.table , then its key will…
setkey order r results
neeva.com
data.table implements its own fast radix-based ordering. See the references for some exposition on the concept of radix sort. setorder accepts unquoted column names (with names preceded with a -…
setorder function - RDocumentation
rdocumentation.org
setorder (and setorderv) reorders the rows of a data.table based on the columns (and column order ) provided. It reorders the table by reference and is therefore very memory efficient. Note…
data.table: setorder – R documentation – Quantargo
quantargo.com
