[Qgis-user] [QGis 2.10]Error while saving shape file

Mon Feb 8 06:48:28 PST 2016

I''ve wrote a demand in the bug tracker. #14249. I hope it will help.
Sincerely.
Le 8 févr. 2016 15:36, "Nicolas Cadieux" <nicolas.cadieux at archeotec.ca> a
écrit :

> Hi,
> May I suggest you all file a bug reports if it has not been done.
>
> This is indeed the third problem reported.  The first seemed related to
> deleting shapefile geometries (a known problem caused by the fact that the
> released file description by ESRI does not explain how to delete
> geometries, the second was most likely cause by a wrongly selected
> snapping  option and now this this.
>
> General  recommendations vary from updating QGIS to the latest version,
> disabling third party plugins that may cause memory leaks and do things
> like slowing down saving file for simple modification (as reported here),
> to saving shapefile regularly under different names (which should be done
> all the time along with backups of the original data before it is modified)
> and finally, to use a more modern file format like spatialite.   Spatialite
> format is open and apparently very effective.   Shapefile, being an old
> proprietary format  should be used only for last resort file sharing. That
> being said, I use it all the time.  Call it a bad habit! :)
>
> Nicolas Cadieux M.Sc.
> Les Entreprises Archéotec inc.
> 8548, rue Saint-Denis Montréal H2P 2H2
> Téléphone: 514.381.5112  Fax: 514.381.4995
> www.archeotec.ca
> On Feb 8, 2016 08:56, "Uwe Fischer [via OSGeo.org]" <[hidden email]
> <http:///user/SendEmail.jtp?type=node&node=5249487&i=0>> wrote:
>
> Pierre,
>
>
>
> this is now the third message in this list concerning fatal errors in
> editing shapefiles in QGIS within a few weeks (see details below). Maybe
> it’s not a consolation to you, but others lost a lot of confidence in QGIS,
> too. Looks like there are bugs that are very difficult to remove. It’s a
> pity that there is no information on the debugging status.
>
>
>
> Regards,
>
>
>
> Uwe
>
>
>
> On Feb 2, 2016 8:46 PM, "Springfield Harrison [via OSGeo.org] " <<a href="
> http://user/SendEmail.jtp?type=node&node=5248593&i=0">[hidden
> email]> wrote:
>
> Hello Group,
>
>         Am using QGIS 2.10.1 and have done so without significant problems
> for many months.  I am attempting to create simple polygons in a shapefile
> by direct vertex entry or copying polygons from another shapefile layer and
> pasting them into the active layer.
>
>         In almost every case, these features disappear.  There is an
> entity entry in the attribute table but there are no polygons created.  In
> one case a polygon was created but it was not the shape that I digitized;
> no more polygons could be created although the process for doing so appears
> to be working.  No error messages were created.  The CRS for the project
> and the shapefile are the same.
>
>         The shapefile can be opened in another GIS but has no content.
>
>         Here are some product details:  QGIS version  2.10.1-Pisa  QGIS
> code revision  d20c5b7 <https://github.com/qgis/QGIS/commit/d20c5b7>
>
>         Thanks very much for any help you can render, Cheers . . . . . . .
> . Springfield Harrison
>
> _______________________________________________
> Qgis-user mailing list
>
>
>
> Hello all,
>
>
>
> today I was working on a shape dataset and I had to delete some features.
> Later I opened the shapefile in ArcMap by chance and I found that the
> features were not deleted. They still did exist. I repeated the process –
> and got the same result. Then, searching the internet, I found this
> incredible post: https://hub.qgis.org/issues/11007
>
>
>
> It is a well known problem (for 1,5 years!!) that *QGIS is not able to
> delete shapes in a reliable way*!! I was horrified to read this because
> it is the same as if a Word processor would not be able to delete a letter
> from a text. I cannot understand why the QGIS developers haven’t fix that
> yet. If QGIS really wants to compete with ArcMap, they should fix it as
> soon as possible. At least, the according menu entries or buttons should be
> inactivated if they don’t bring out reliable results.
>
>
>
> My questions are:
>
> ·         is this information still up to date? I can‘t read all of the
> 80 answers to the post now to get in-depth information ...
>
> ·         does anybody have information about how they are planning to
> handle this problem at the development team?
>
> ·         is there a workaround for this? Do the GRASS vector tools bring
> out reliable results?
>
> ·         are there more of those software errors in QGIS that might lead
> to huge problems in working on vector data and sharing them with others? If
> so, is there a „black list“ of things one is never allowed to use in QGIS
> if you don’t want to destroy your datasets?
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
> *Von:* Qgis-user [mailto:<a
> href="/user/SendEmail.jtp?type=node&node=5249473&i=0">[hidden
> email]] *Im Auftrag von *Pierre Muckensturm
> *Gesendet:* Montag, 8. Februar 2016 14:34
> *An:* <a
> href="/user/SendEmail.jtp?type=node&node=5249473&i=1">[hidden
> email]
> *Betreff:* [Qgis-user] [QGis 2.10]Error while saving shape file
>
>
>
> Hi,
>
> I use a QGis 2.10 version,  X64 on Windows installed with Osgeo4W.
>
> I'll try to explain the bug.
>
> I work on a map, with a shape file of polygons. They are not really
> complex, nor numerous (25). I got   id,    DOSSIER,    NOM_OPERAT,
> PRIORITE,    COMMENTA,    DATE_MAJ,    SOURCE,    LIBELLE_X, LIBELLE_Y
> fields and         SURF_HA which is a virtual field.
>
> Friday, it took me 5 min to save the file each time I modify a vertex.
>
>
>
> Today, I update my id field with the expression "$id". Then, my shape file
> looks like a totally mess (look at the imgur album :
> http://imgur.com/a/noSM2). The LIBELLE_X, LIBELLE_Y fields have
> disappeard, the DOSSIER field which used to be null is now partially
> fulled, the NOM_OPERAT are truncated, fulled in a completelly non-sense
> manner. As for PRIORITE, DATE_MAJ.
>
> Conclusion, 2 days of work in a trash. I'm quite pissed off, according
> with the fact that I'm trying to convince my superior we shall use QGis.
>
> So, what happened ? How could this happen ? Sorry but I don't have the
> genuine files, and the data are quite sensitive.
>
> --
>
> PLM
>
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