How to save a VERY BIG .rda file in an R package

Question

I want to save two 460 x 5000 numeric matrices in my R-packet. Following the instructions in: How to efficiently deal with uncompressed savings when checking packages? I saved the objects as:

save(mat1,file="mat1.rda",compress="xz")
save(mat2,file="mat2.rda",compress="xz")

However, the resulting R-objects are quite large (8.7MB and 8.9 MB), and R CMD CHECK --as-cran gives me notes:

 * checking installed package size ... NOTE
   installed size is 20.1Mb
   sub-directories of 1Mb or more:
   data  20.0Mb

In my opinion, you cannot send R packets to a CRAN that does not “pass” (that is, there is no note or warning). R CMD CHECL --as-cran. Is there a way to compress a dataset even less?

Answer 1

Do I need to include these files? I see several options:

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Answer 2

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