scrubc | R Documentation |
scrubc()
removes non-numeric characters from test scores.
swapc()
replaces non-numeric characters with numeric.
scrubc(c, re = "[^-.0-9]") swapc(c, re = "[Kk]", repl = "0")
c |
A character vector of potentially numeric values. |
re |
A regular expression specifying which characters to operate on. For best effect, re should begin with "[" and end with "]" to specify a character set. At some point, I'll add a check to enforce this. |
repl |
A single character to be used as a replacement. |
scrubc()
removes non-numeric characters from test scores,
often present due to fat-fingered data entry, in anticipation of converting to numeric.
Report the number of such characters removed. Characters to be removed are specified by regular expression (re).
The default re is "[^-.0-9]", which will remove all non-numeric characters at one swoop.
A typical use case in interactive use is to remove exactly 1 specific character at a time, e.g.,
scrubc(c=c("*K.1", "K.8", "1.6", "2.1", "3.0", ">12.9"), re="[>]")
. This serves to alert
the analyst to how many of each non-numeric character removed.
swapc()
replaces one character in a string with another in
anticipation of converting to numeric. One use-case is to replace
"K" with "0" in grade-equivalent test scores.
These sometimes occur in otherwise numeric standardized test scores.
Report the number of such characters replaced. Characters to be replaced
are specified by regular expression (re).
str_remove_all
cleanNumbers
str_replace_all
c <- c("0.1", "_0.8", "1.6", "2.1`", "+3. 0", "12.9") scrubc(c) c = c("<K.1", "K.8", "1.6", "2.1", "3.0", ">12.9") swapc(c)
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