Re^3: Mysterious slow down with large data set

I tried it this way:

    @topX = (-1) x 20;
...
        $topX[ $_ ] < $sim and splice( @topX, $_, 0, $sim ), pop( @top
+X ), last for 0 .. 19;
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A short-ciruited, linear insertion is at worst O(N) rather than O(N logN).

It speeds things a little, but doesn't address the slowdown which is happening exclusively (and inexplicably) inside PDL.

Unfortunately, the PDL documentation spends more time telling you about their 'philosophy'; and indexing the indexes to the documentation than is does telling you what these functions actually do; or how to inspect the results of what they did :(

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'

Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.

"Science is about questioning the status quo. Questioning authority".

In the absence of evidence, opinion is indistinguishable from prejudice.

The start of some sanity?

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