Re: Re: Matrix column access

>>>>> "Jan" == Jan Rychter <[email protected]> writes:

    Jan> I started using matlisp very recently and the things that were missing
    Jan> were:

    Jan> -- why wasn't pinv (pseudoinverse) incorporated? I had to put it in
    Jan>    myself, and the patches were posted to the list some months ago...

Mostly because no one wanted it early on, and later because I was
lazy.

It also doesn't help my motivation when someone (not you!) asks for
some functionality, and I ask a question about it, and never hear from
him again.

    Jan> -- not enough efficient data manipulation tools: the macros I posted for
    Jan>    operating on rows and columns are an example. I really really need
    Jan>    those to do anything serious.

What other kind of data manipulation tools are you looking for?

    Jan> -- minor stuff, like min/max.

This kind of stuff isn't there mostly because of my laziness, and
because of the lack of requests for such functionality.  Plus, what is
min/max supposed to do on a matrix?  Return the min/max element of the
matrix?

Ray



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