Menu
I'm trying to do something like this:
opts = list(
width=128,
overlap=width/2,
)
But, as expected, I get
Error: object 'width' not found
What is a good idiom for salvaging this code snippet?
949
In order to reference a list member directly, we have to use the double square bracket "[[]]" operator. The following object x[[2]] is the second member of x. In other words, x[[2]] is a copy of s, but is not a slice containing s or its copy.
How to Create Lists in R? We can use the list() function to create a list. Another way to create a list is to use the c() function. The c() function coerces elements into the same type, so, if there is a list amongst the elements, then all elements are turned into components of a list.
To subset lists we can utilize the single bracket [ ] , double brackets [[ ]] , and dollar sign $ operators. Each approach provides a specific purpose and can be combined in different ways to achieve the following subsetting objectives: Subset list and preserve output as a list. Subset list and simplify output.
To add or append an element to the list in R use append() function. This function takes 3 parameters input list, the string or list you wanted to append, and position. The list. append() function from the rlist package can also use to append one list with another in R.
You can use dplyr::lst which is same as list but here you can build the components sequentially.
dplyr::lst(
width = 128,
overlap=width/2,
)
#$width
#[1] 128
#$overlap
#[1] 64
Another option is:
opts = list(
width={width<-128},
overlap=width/2
)
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
