I'm rethinking the interface of a package, specifically how external binary
data is formatted for use in R. I can't decide if it is better to use
attributes to store metadata or use a list to hold the main data and
metadata as separate elements.
Here's is what one datatype currently looks like:
List of 2
$ : int [1:16, 1:16, 1:16] 9 9 9 9 10 10 1 1 14 14 ...
..- attr(*, "palette")=List of 16
[snip]
$ : int [1:16, 1:16, 1:16] 1 1 1 1 1 1 1 1 1 1 ...
..- attr(*, "palette")=List of 2
[snip]
- attr(*, "offset")= int 3
It's a list of two 16x16x16 arrays of integers. Each array has its own
"palette" attribute. Each value in the array refers to a specific element
of the palette. In addition the entire list has an offset attribute.
I am considering alternative strategies for representing this data, and I
would like any opinions on which style is recommended and why?
List of 3
$ index :List of 2
..$ : int [1:16, 1:16, 1:16] 9 9 9 9 10 10 1 1 14 14 ...
..$ : int [1:16, 1:16, 1:16] 1 1 1 1 1 1 1 1 1 1 ...
$ palette:List of 2
..$ :List of 16
..$ :LIST of 2
$ offset : int 3
or
List of 2
$ :List of 2
..$ index: int [1:16, 1:16, 1:16] 9 9 9 9 10 10 1 1 14 14 ...
..$ palette:List of 16
$ : List of 2
..$ index : int [1:16, 1:16, 1:16] 1 1 1 1 1 1 1 1 1 1 ...
..$ palette : List of 2
- attr(*, "offset")= int 3
Thanks.
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