[Maxima] subseq, array slice
robert.dodier at gmail.com
Thu Apr 5 01:44:04 CDT 2012
On 2012-04-04, Tamas Papp <tkpapp at gmail.com> wrote:
> 2. Is there something similar for arrays (similar to a[i:j,k:l] in R)?
There is an experimental share package amatrix which is an
implementation of matrices using a Lisp array for storage.
Various notations for indexing are recognized: list of indices,
Boolean expressions, 'all. demo(amatrix) shows some examples.
Ranges aren't recognized, although it would be straightforward to add them.
amatrix is an attempt at a matrix reimplementation. Disclaimer: I wrote
it. Unfortunately amatrix isn't integrated with the rest of Maxima --
operations which work on ordinary matrices won't work on amatrix.
Hope this helps,
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