constants | R Documentation |
Some constants are provided to limit error by using some common values in programs They are defined using UPPERCASE names to be recoginizable as constants
YES
NO
DONTKNOW
YES_NO_DNK
An object of class character
of length 1.
An object of class character
of length 1.
An object of class character
of length 1.
An object of class character
of length 3.
Beware to never redefine these objects in your code, or use ifnBase:: prefix to be sure of the value used.
is 'Yes' level used to recode many variables
is 'No' level
'DNK' Dont know level
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