Hi Morgan,
In the example, please ignore
`C_set_altrep_subset_method("compressedMatrix", get_subset_func)`. You do
not have to define it to run the example.
Best,
Jiefei
On Sat, Jun 15, 2019 at 11:45 AM King Jiefei wrote:
> Hi Morgan,
>
> Thanks for the context, it seems like you want to compr
Hi Morgan,
Thanks for the context, it seems like you want to compress your matrix and
you expect the "new" matrix should contain the same amount of information
as the "old" one, it is correct?
If this is the case, since you are using C++ code, a safer but imperfect
solution is to find a C++ data
Hi Jiedei,
Thank you for your reply.
To give you a bit more context, I wrote a function that find all the
positions (index) of all small matrices inside a larger matrix. At the
beginning I pre-allocate let's say a 100 by 2 matrix. However a lot of
values might remain empty in this matrix of posti
Hi,
I don't think there is a native R API to do what you want here, but if the
matrix is only used by you and not be exported to the other user, you can
hack R data structure to achieve that goal.
Because there is not too much context of your question, I will assume the
whole point of resizing a
Please do not re-post -- you have asked this before here. As this list is
about R programming help, it is perhaps not surprising that you did not
receive a reply.
You might try R-devel instead where " Questions likely to prompt discussion
unintelligible to non-programmers or topics that are too te
Hi,
Is there a way to resize a matrix defined as follows:
SEXP a = PROTECT(allocMatrix(INTSXP, 10, 2));
int *pa = INTEGER(a)
To row = 5 and col = 1 or do I have to allocate a second matrix "b" with
pointer *pb and do a "for" loop to transfer the value of a to b?
Thank you
Best regards
Morgan
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