comment on

-- Can you please provide an example of relevant data and the relevant output you expect from that data?

You want me to post a 31,156,327 byte bit-vector that represents just under a quarter of a billion boolean states?

The vector is just a string of bits. Packing a integer to provide a sample was convenient. The ordering of the bits was irrelevant.

The important factor was showing how the rle was to be encoded. -- Can you say why vec must be used?

Pack (or any other means) is fine for the rle, but the original vector is built with vec() so the appropriate pack template for accessing the bits in the same order as they were constructed is 'b*'.

The downside of using unpack 'b*' during the rle, is it expands the 31MB vector to a 250 MB string.

On the other hand, vec() can process the 31MB without expanding it at all.

In reply to Re^4: Run length encode a bit vector by Anonymous Monk
in thread Run length encode a bit vector by Anonymous Monk

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