Add rows to data.frame/matrix/table
Take a sequence of vector, matrix or data-frame arguments and combine by
rows. Contrary to rbind it handles non-matching column
names. %add_rows% is an infix version of add_rows.
There is also special method for the results of
cro/cro_fun/tables/fre. .add_rows is
version for adding rows to default dataset. See default_dataset.
add_rows(...)
## S3 method for class 'data.frame'
add_rows(..., nomatch_columns = c("add", "drop", "stop"))
x %add_rows% y
.add_rows(..., nomatch_columns = c("add", "drop", "stop"))... |
data.frame/matrix/table for binding |
nomatch_columns |
action if there are non-matching columns between
data.frames. Possible values are |
x |
data.frame/matrix/table for binding |
y |
data.frame/matrix/table for binding |
a = data.frame(x = 1:5, y = 6:10)
b = data.frame(y = 6:10, z = 11:15)
add_rows(a, b) # x, y, z
a %add_rows% b # the same result
add_rows(a, b, nomatch_columns = "drop") # y
# simple tables
data(mtcars)
# apply labels
mtcars = apply_labels(mtcars,
mpg = "Miles/(US) gallon",
cyl = "Number of cylinders",
disp = "Displacement (cu.in.)",
hp = "Gross horsepower",
drat = "Rear axle ratio",
wt = "Weight (lb/1000)",
qsec = "1/4 mile time",
vs = "V/S",
vs = c("V-engine" = 0, "Straight engine" = 1),
am = "Transmission (0 = automatic, 1 = manual)",
am = c(automatic = 0, manual = 1),
gear = "Number of forward gears",
carb = "Number of carburetors"
)
tbl_mean = calculate(mtcars, cro_mean(cyl, am))
tbl_percent = calculate(mtcars, cro_cpct(cyl, am))
tbl_mean %add_rows% tbl_percentPlease choose more modern alternatives, such as Google Chrome or Mozilla Firefox.