[GRASS-dev] r3.univar
Hamish
hamish_nospam at yahoo.com
Mon Feb 19 02:20:17 EST 2007
Sören Gebbert wrote:
> Hi devs,
> i have written a new raster3d module named r3.univar.
It is great to see the r3.* modules maturing well. Thanks!
> I have replaced the qsort with a heapsort function,
> because qsort is in the worst case scenario quite slow on large datasets.
>
> Maybe we can put heapsort as library functions into the
> grass library, so r.univar and other modules can use them too?
> Or is this function already present in grass?
see this thread re s.cellstats's qisort() :
http://thread.gmane.org/gmane.comp.gis.grass.devel/14833/focus=15039
I am not responsible for exteneded stats in r.univar so I won't comment
beyond what's found in that thread.
Hamish
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