[GRASS-dev] tickets to solve for GRASS 6.4.2 release

[Markus Neteler]

On Thu, Sep 1, 2011 at 5:29 PM, Markus Metz
<markus.metz.giswork at googlemail.com> wrote:
> Hamish wrote:
>>> >#1110     v.rast.stats locks up on wingrass
>>> >  --> I would suggest to replace v.rast.stats with
>>> > v.rast.stats2 from addons with has enjoyed more
>>> > maintenance and testing in the last months.
>>
>> devil's advocate: not more than the script itself :)
>
> No, as much as the script itself, plus recent bug fixes and enhancements.

Hamish: it renders it from unusable to usable.

>> how do the two compare performance wise? are the options/flags
>> 100% backwards compatible? give identical results?
>>
> We (you and me and others) had this exact discussion previously.
> Excerpts from the previous discussion:
>
> v.rast.stats does not scale at all, for e.g. 10000 areas it is
> completely useless whereas v.rast.stats2 is 10000x faster, e.g. 20 sec
> vs 55 hours. That's the reason for the existence of v.rast.stats2
> making use of zonal statistics in r.univar, it's meant to be a
> replacement, not something new. More details in the ML archives.

+1 for update.

Markus