[Qgis-user] qgis browser hangs while opening big shapefile

[Nicolas Cadieux]

Hi,
If the CRS are different, an empty file is to be expected.  Try opening the original shape file with the "CRS on the fly"turned off. You could saving the shape file in an other format like spatialite. .shp are less capable of dealing with bid complex shapes that we can create today.
Good luck
Nicolas

Envoyé de mon iPad

> Le 30 août 2016 à 10:37, Reginald Carlier [via OSGeo.org] <ml-node+s1560n5283058h59 at n6.nabble.com> a écrit :
> 
> Tyler;
> 
>  
> 
> I tried to clip without adding to the project.
> 
> It took about 20 seconds to complete. When I opened the resulting shapefile it was empty.
> 
> The algorithm gave a warning that the two shapefiles were in a different CRS. So maybe this is the problem. I will try to put them in the same CRS.
> 
>  
> 
> Regards,
> 
>  
> 
> Reginald Carlier
> Deskundige GIS
> 
> 
> 
> 
> Gemeente Ingelmunster, Oostrozebekestraat 4, 8770 Ingelmunster 
> T +32 51 33 74 39 www.ingelmunster.be
> 
>      
> 
> Van: Tyler Veinot [mailto:[hidden email]] 
> Verzonden: dinsdag 30 augustus 2016 15:49
> Aan: Reginald Carlier; [hidden email]
> Onderwerp: Re: [Qgis-user] qgis browser hangs while opening big shapefile
> 
>  
> 
> Reginald;
> 
> I am on 2.14.5 (thought I had also installed 2.16.x but I guess I skipped it). The first thing I noticed is when opening the file my memory usage doubled and qgis-ltr-bin.exe moved right to the top of the processes list. I didn't get any hang-ups but I feel I may have gotten close. Did you try using the clip function without adding the layers to the project? My machine did the clip faster and the result didn't not come in sluggish and I clipped it by about 1/3.
> 
> Tyler
> 
>  
> 
> On Tue, Aug 30, 2016 at 10:08 AM, Reginald Carlier <[hidden email]> wrote:
> 
> Tyler,
> 
>  
> 
> I downloaded belgium-latest.shp.zip
> 
>  
> 
> Regards,
> 
>  
> 
> Reginald Carlier
> Deskundige GIS
> 
> 
> 
> 
> Gemeente Ingelmunster, Oostrozebekestraat 4, 8770 Ingelmunster 
> T <a href="tel:%2B32%2051%2033%2074%2039" target="_blank">+32 51 33 74 39 www.ingelmunster.be
> 
>      
> 
> Van: Tyler Veinot [mailto:[hidden email]] 
> Verzonden: dinsdag 30 augustus 2016 15:06
> Aan: Reginald Carlier
> CC: [hidden email]
> 
> 
> Onderwerp: Re: [Qgis-user] qgis browser hangs while opening big shapefile
> 
>  
> 
> Reginald;
> 
> There are 2 download options, I would like to test the one you downloaded.
> 
> Which one did you download, latest of latest free?
> 
> Tyler
> 
>  
> 
> On Tue, Aug 30, 2016 at 9:23 AM, Reginald Carlier <[hidden email]> wrote:
> 
> Hi Tyler,
> 
>  
> 
> The shape can be downloaded from this link:
> 
> http://download.geofabrik.de/europe/belgium.html
> 
> I used Belgium-latest.shp
> 
>  
> 
> Greetings,
> 
>  
> 
> Reginald Carlier
> Deskundige GIS
> 
> 
> 
> 
> Gemeente Ingelmunster, Oostrozebekestraat 4, 8770 Ingelmunster 
> T <a href="tel:%2B32%2051%2033%2074%2039" target="_blank">+32 51 33 74 39 www.ingelmunster.be
> 
>      
> 
> Van: Tyler Veinot [mailto:[hidden email]] 
> Verzonden: dinsdag 30 augustus 2016 13:53
> Aan: Reginald Carlier
> Onderwerp: Re: [Qgis-user] qgis browser hangs while opening big shapefile
> 
>  
> 
> Reginald;
> 
> Can you send the shape?
> 
> Tyler
> 
>  
> 
> On Tue, Aug 30, 2016 at 6:40 AM, Reginald Carlier <[hidden email]> wrote:
> 
> Hi,
> 
>  
> 
> I downloaded the latest shapefile of OSM for Belgium.
> 
> When I open QGIS browser and point to the buildings.shp (size : 325959kB) the application hangs, so I can’t change the CRM.
> 
> I also tried clipping the buildings.shp with a polygon shape of a town but that resulted in the same unresponsive behavior.
> 
> I’m using QGIS 2.16.1.
> 
>  
> 
> Regards,
> 
> Reginald Carlier
> Deskundige GIS
> 
> 
> 
> 
> Gemeente Ingelmunster, Oostrozebekestraat 4, 8770 Ingelmunster 
> T <a href="tel:%2B32%2051%2033%2074%2039" target="_blank">+32 51 33 74 39 www.ingelmunster.be
> 
>      
> 
> 
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