[Qgis-user] Very slow performance with large SHP files, with over 200k objects

[Carson Farmer]

Porting fTools to C++ is already under way, but it is extremely slow
at the moment (due to my PhD!). If there are any C++ devs out there
with an interest in speeding these operations up, please don't
hesitate to contact me!

My other comment, which is frequently given on the R mailing lists, is
this: There are rarely any problems that can't be broken down into
smaller components; if you have issues with visualizing/working with
large vector layers, why not try sub-setting the layers into
manageable pieces?

Carson

On Tue, Mar 8, 2011 at 6:16 PM, Agustin Lobo <alobolistas at gmail.com> wrote:
> At least regarding the vector operations (ftools), it seems that the
> slowness is because of python code. During
> FOSS4G in Barcelona we raised the question of rewriting all that part in c++
>
> Agus
>
> 2011/3/7 Giovanni Manghi <giovanni.manghi at gmail.com>:
>>
>>> Agreed, this is a serious problem, and should be dealt with. There is a
>>> ticket on this, please have a look to it.
>>
>> it is even worst when you try edit those vectors.
>>
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-- 
Carson J. Q. Farmer
ISSP Doctoral Fellow
National Centre for Geocomputation
National University of Ireland, Maynooth,
http://www.carsonfarmer.com/