[GRASSLIST:5972] Re: speeding up v.in.ogr

Radim Blazek blazek at itc.it
Wed Mar 2 08:59:57 EST 2005


Lorenzo Moretti wrote:
> Hi Chris
> 
>> I have been trying to import a detailed shapefile of the florida coast
>> (about 24M) into grass6.0b2, using v.in.ogr. Unfortunately, having
>> started 3 days ago, the import has not yet completed. It is making
>> progress, as the number of intersections is incrementing, however this
>> surely should not be taking quite this long. Are there ways of
>> speeding up the process?
>>
>> I am on a 1GHz OS X Powerbook with 1GB RAM.

Is it one or few big shapes or many small?

> The problem is in that shape in OS X version. Some shape files are not 
> good in grass in OS X.
> 
> Open it before with another sw: QGIS, Thuban or Jump and see about 
> problems (in areas, lines, etc.)
> 
> In grass 6
> Try:
> - v.in.ogr with "Do not clean polygons" selected
> then
> - v.clean

This is not correct. I have already written that here.
For areas v.in.ogr -c + v.clean != v.in.ogr.

Radim




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