lookupQT: Hash Table/Dictionary Lookup These functions were originally...
In iemisc: Irucka Embry's Miscellaneous Functions
lookupQT R Documentation
Hash Table/Dictionary Lookup
These functions were originally contained in "qdapTools" version 1.3.4
lookup - data.table
based hash table useful for large vector lookups.
Description
Hash Table/Dictionary Lookup
These functions were originally contained in "qdapTools" version 1.3.4
lookup - data.table
based hash table useful for large vector lookups.
Usage
lookupQT(terms, key.match, key.reassign = NULL, missing = NA)
Arguments
terms
A vector of terms to undergo a lookup.
key.match
Takes one of the following: (1) a two column data.frame of a
match key and reassignment column, (2) a named list of vectors (Note: if
data.frame or named list supplied no key reassign needed) or (3) a single
vector match key.
key.reassign
A single reassignment vector supplied if key.match is
not a two column data.frame/named list.
missing
Value to assign to terms not matching the key.match. If set
to NULL the original values in terms corresponding to the
missing elements are retained.
Value
Outputs A new vector with reassigned values.
Author(s)
Tyler Rinker ('qdapTools' package version 1.3.4)
iemisc documentation built on Sept. 25, 2023, 5:09 p.m.
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| lookupQT | R Documentation |
Hash Table/Dictionary Lookup
These functions were originally contained in "qdapTools" version 1.3.4
lookup - data.table
based hash table useful for large vector lookups.
Description
Hash Table/Dictionary Lookup
These functions were originally contained in "qdapTools" version 1.3.4
lookup - data.table
based hash table useful for large vector lookups.
Usage
lookupQT(terms, key.match, key.reassign = NULL, missing = NA)
Arguments
terms |
A vector of terms to undergo a lookup. |
key.match |
Takes one of the following: (1) a two column data.frame of a match key and reassignment column, (2) a named list of vectors (Note: if data.frame or named list supplied no key reassign needed) or (3) a single vector match key. |
key.reassign |
A single reassignment vector supplied if key.match is not a two column data.frame/named list. |
missing |
Value to assign to terms not matching the key.match. If set
to |
Value
Outputs A new vector with reassigned values.
Author(s)
Tyler Rinker ('qdapTools' package version 1.3.4)
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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