Description Usage Arguments Details Value Note Examples
This function applies a function to each row of a data frame. All variables of the data frame and the optional arguments are passed as arguments to the function.
1 | doforeachrow(data, fun, doitalsoforoptargs, ...)
|
data |
A data frame. |
fun |
A non-empty character string naming the function to be called. |
doitalsoforoptargs |
Logical. See Details. |
... |
Other arguments. |
It applies a function to each row of the data frame. The variables of the data frame and the optional arguments are passed as arguments. If there are common names among the data frame and the optional arguments, those values of the data frame are used.
If doitalsoforoptargs
is TRUE, then try to use the row of the
optional arguments, if it is possible (only when the length of the
optional argument is equal to the number of rows of the data
base). Otherwise, (doitalsoforoptargs
= FALSE or the lengths
are different), the whole optional arguments are passed to the function.
A list for each row with the values returned by the function.
Generic function.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 | fun <- "seq"
data <- data.frame(from=c(1,10), to=c(2,11))
doforeachrow(data, fun, TRUE)
## [[1]]
## [1] 1 2
## [[2]]
## [1] 10 11
doforeachrow(data, fun, TRUE, length.out=c(4))
## [[1]]
## [1] 1.000000 1.333333 1.666667 2.000000
## [[2]]
## [1] 10.00000 10.33333 10.66667 11.00000
doforeachrow(data, fun, TRUE, length.out=c(3,5))
## [[1]]
## [1] 1.0 1.5 2.0
## [[2]]
## [1] 10.00 10.25 10.50 10.75 11.00
|
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.