Fill blank entries in a vector
fillBlanks(x, blankGrep = c("[ \t]*"), first = "", ...)character vector
vector of grep patterns, or NA, indicating
the type of entry to be considered blank.
Each blankGrep pattern is searched using jamba::proigrep(), which
by default uses case-insensitive regular expression pattern
matching.
options character string intended when the first
entry of x is blank. By default "" is used.
additional parameters are ignored.
Character vector where blank entries are filled with the most recent non-blank value.
This function takes a character vector and fills any blank (missing) entries with the last non-blank entry in the vector. It is intended for situations like imported Excel data, where there may be one header value representing a series of cells.
The method used does not loop through the data, and should scale fairly well with good efficiency even for extremely large vectors.
Other jam string functions:
asSize(),
breaksByVector(),
cPasteSU(),
cPasteS(),
cPasteUnique(),
cPasteU(),
cPaste(),
formatInt(),
gsubOrdered(),
gsubs(),
makeNames(),
mixedOrder(),
mixedSortDF(),
mixedSorts(),
mixedSort(),
mmixedOrder(),
nameVectorN(),
nameVector(),
padInteger(),
padString(),
pasteByRowOrdered(),
pasteByRow(),
sizeAsNum(),
tcount(),
ucfirst(),
uniques()
x <- c("A", "", "", "", "B", "C", "", "", NA,
"D", "", "", "E", "F", "G", "", "");
data.frame(x, fillBlanks(x));
#> x fillBlanks.x.
#> 1 A A
#> 2 A
#> 3 A
#> 4 A
#> 5 B B
#> 6 C C
#> 7 C
#> 8 C
#> 9 <NA> <NA>
#> 10 D D
#> 11 D
#> 12 D
#> 13 E E
#> 14 F F
#> 15 G G
#> 16 G
#> 17 G