[Qgis-user] QGIS Shapefile Structure (?)

[Matthias Kuhn]

Hi Spring,

Which version of QGIS are you using?

On 06/22/2016 11:15 AM, Springfield Harrison wrote:
> Hello Alexandre,
> 
>         Ok, thank you.  That is cumbersome but does work I guess.
> 
>         Does "Save As" clear out the deleted features or do they live on
> as ghosts?
> 
>                 Thank you, cheers . . . .   Spring
> 
> 
> At 22-06-2016 01:54 Wednesday, Alexandre Neto wrote:
> 
>> Hello Spring,
>>
>> This has to do with the way qgis (GDAL) handles the feature deletion.
>> Instead of totally removing them (which takes longer) it mark them as
>> deleted.
>>
>> The (not very elegant) workaround here is to save the layer to a new
>> shapefile using save as...
>>
>> Hope it helps
>>
>> A qua, 22/06/2016, 09:39, Springfield Harrison <stellargps at gmail.com
>> <mailto:stellargps at gmail.com>> escreveu:
>>
>>     Hello All,
>>
>>     Â Â Â Â I have been opening QGIS shapefiles in Manifold GIS and
>>     noticed that
>>     they bear very little resemblance to the same file in QGIS, in some
>>     cases. When I then saved that file in QGIS as a different file, and
>>     opened it in Manifold GIS, all the features were present and arranged
>>     as expected.
>>
>>     Â Â Â Â On another occasion, it looked like previously deleted
>>     polygons were
>>     visible when opened in Manifold GIS.
>>
>>     Â Â Â Â And, in another instance, when attempting in QGIS to create a
>>     polygon, that failed. Instead, portions of old, deleted polygons
>>     were reactivated instead! What is going on here? This does not look
>>     like trustworthy behavior.
>>
>>     Â Â Â Â I tried using SpatiaLite files instead of shapefiles, but
>>     there edit
>>     and feature creation failed outright.
>>
>>     Â Â Â Â I believe this has been dealt with earlier; could someone
>>     point me
>>     to the discussion? I did a brief search but could not find the
>>     relevant posts.
>>
>>     Â Â Â Â Â Â Â Â Thanks very much, Cheers . . . . . . . . Spring
>>     Harrison
>>
>>
>>
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>> -- 
>> Alexandre Neto
>> ---------------------
>> @AlexNetoGeo
>> http://sigsemgrilhetas.wordpress.com
>> http://gisunchained.wordpress.com <http://gisunchained.wordpress.com/>
> 
> 
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