age2int()convert the Age column from standard HMD or HFD tables to integer
Long the bane of many an HMD/HFD user is that the age column must be read into R as a factor or character vector, yet we'd like to use it as integer or numeric. This function strips symbols that are used to indicate the open age groups ("12-","55+","110+"), and coerces to integer format. This function is called by
HMDparse(), and so forth.
a vector of the Age column from and HMD or HFD data object that has been read directly into R. This may be a factor or character vector.
This function is written for the sake of various parse functions.
the same age vector as a clean integer.
original function submitted by Josh Goldstein, modified by Tim Riffe.
AgeTest <- c("12-","13","14","55+") (AgeNew <- age2int(AgeTest)) AgeNew + .5 # sort of mid-interval # also handles abrdiged ages properly: AgeAbridged <- c("0","1-4","5-9","10-14") age2int(AgeAbridged)
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