[Qgis-user] QGIS big fail in deleting Shapes!!

Tue Jan 19 13:54:00 PST 2016

Hi!
While all that Nicolas and Uwe says is generally true and reasonable, it is
also true that bugs and errors can be more or less dangerous.
With limited resources, it is even more important that bugs are handled
according to a simple risk analysis.
In this case, it would go something like this:
What is the probability that users will edit shape files (high, moderate,
low): High
What is the probability that QGIS will damage shape files: Moderate (as I
understand)
What is the severity of the potential damage (fatal, reparable,
negligible): Fatal
And High * Moderate * Fatal equals a probable risk for fatal damage, which
ought to prompt for a rapid fix of ths bug, regardless of where it resides
in the QGIS ecosystem.
But oddly enough, I have browsed through many of the posts on the shape
file issue, but have yet to find a technical description of the exact cause
and origin of this bug.

Regards, Mats.E

2016-01-19 22:14 GMT+01:00 Saber Razmjooei <
saber.razmjooei at lutraconsulting.co.uk>:

> Dear Uwe,
>
>
>
> There are some work-arounds and solutions provided within the ticket.
>
>
>
> Also, work is underway to resolve the issue in the next LTR release. Last
> time I checked (5 minutes ago) it is still present in master.
>
>
>
> I totally agree with you that there should be a warning to users to make
> them aware of this limitation.
>
>
>
> In general, QGIS and other GIS/non-GIS proprietary software come with
> bugs. The reason developers haven’t fixed this bug and other bugs is due to
> lack of resources (time, money).
>
>
>
> The project steering committee is committed to resolving the bugs and they
> have already allocated a big proportion of their income for bug fixing. You
> can see last year’s financial report hear:
>
> http://qgis.org/en/_downloads/PublicQGISfinancialreport2014.pdf
>
>
>
>
>
> If you think, there should be more work done to increase the quality of
> QGIS, you can get involved or contribute to the project:
>
> http://qgis.org/en/site/getinvolved/governance/sponsorship/sponsorship.html
>
>
>
> Regards,
>
> Saber
>
>
>
> *From:* Qgis-user [mailto:qgis-user-bounces at lists.osgeo.org] *On Behalf
> Of *Uwe Fischer
> *Sent:* 19 January 2016 19:10
> *To:* 'qgis-user ML'
> *Subject:* [Qgis-user] QGIS big fail in deleting Shapes!!
>
>
>
> 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?
>
>
>
>
>
> Regards,
>
> Uwe Fischer
>
>
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