Basic usage
sprintf("%.3f" , pi);
# "3.142"
sprintf("%5.2f", pi);
# " 3.14"
sprintf("%+f" , pi); # with sign
# "+3.141593"
sprintf("%-10f", pi); # left adjustment
# "3.141593 "
Omitting quotes
The output of
sprintf embeds strings in quotes. These can be omitted by feeding the output of
sprintf to
cat(…):
vec <- c('foo', 'bar', 'baz');
sprintf('%s', vec);
#
# [1] "foo" "bar" "baz"
cat(sprintf('%s', vec));
#
# foo bar baz
Using the recycling rule
The recycling rule can be applied in sprintf:
cat(
sprintf('%s - %d', c('foo','bar', 'baz'), 3:8),
sep ="\n"
)
#
# foo - 3
# bar - 4
# baz - 5
# foo - 6
# bar - 7
# baz - 8