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Hi all,<br>
<br>
Here is some more eplanation of the issue:<br>
<br>
<a class="moz-txt-link-freetext" href="http://gis.stackexchange.com/questions/58101/how-to-avoid-creating-corrupt-shapefiles-during-editing/79677#79677">http://gis.stackexchange.com/questions/58101/how-to-avoid-creating-corrupt-shapefiles-during-editing/79677#79677</a><br>
<br>
I spent quite some time to fix this issue as much as possible from
QGIS side (Hint: "they" are not just lazy and ignore problems ;-) )<br>
It seems that there is also a second (closely related) problem left
to be solved and it looks that it can be solved by shipping a newer
GDAL version.<br>
Apparently the issue has not been completely solved yet and
apparently it is considered to be from "critical" over "big fail" to
"fatal" from the audience.<br>
It would be awesome if you could ask the maintainer of your
operation system's builds for a quote to ship QGIS with GDAL 2.0 on
your operation system. We will gladly provide you with email
addresses.<br>
<br>
Best regards,<br>
Matthias<br>
<br>
<div class="moz-cite-prefix">On 01/19/2016 10:54 PM, Mats Elfström
wrote:<br>
</div>
<blockquote
cite="mid:CAO1MNmV-fBR5kCzs_3CjwTQq-ytqG+cxE__mPcx-SSaV7mCDvg@mail.gmail.com"
type="cite">
<div dir="ltr">Hi!
<div>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.</div>
<div>With limited resources, it is even more important that bugs
are handled according to a simple risk analysis.</div>
<div>In this case, it would go something like this:</div>
<div>What is the probability that users will edit shape files
(high, moderate, low): High</div>
<div>What is the probability that QGIS will damage shape files:
Moderate (as I understand)</div>
<div>What is the severity of the potential damage (fatal,
reparable, negligible): Fatal</div>
<div>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.</div>
<div>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.</div>
<div><br>
</div>
<div>Regards, Mats.E</div>
<div><br>
</div>
</div>
<div class="gmail_extra"><br>
<div class="gmail_quote">2016-01-19 22:14 GMT+01:00 Saber
Razmjooei <span dir="ltr"><<a moz-do-not-send="true"
href="mailto:saber.razmjooei@lutraconsulting.co.uk"
target="_blank">saber.razmjooei@lutraconsulting.co.uk</a>></span>:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">
<div link="#0563C1" vlink="#954F72" lang="EN-GB">
<div>
<p class="MsoNormal"><span style="color:#1f497d">Dear
Uwe,</span></p>
<p class="MsoNormal"><span style="color:#1f497d"> </span></p>
<p class="MsoNormal"><span style="color:#1f497d">There
are some work-arounds and solutions provided within
the ticket.</span></p>
<p class="MsoNormal"><span style="color:#1f497d"> </span></p>
<p class="MsoNormal"><span style="color:#1f497d">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.</span></p>
<p class="MsoNormal"><span style="color:#1f497d"> </span></p>
<p class="MsoNormal"><span style="color:#1f497d">I
totally agree with you that there should be a
warning to users to make them aware of this
limitation.</span></p>
<p class="MsoNormal"><span style="color:#1f497d"> </span></p>
<p class="MsoNormal"><span style="color:#1f497d">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). </span></p>
<p class="MsoNormal"><span style="color:#1f497d"> </span></p>
<p class="MsoNormal"><span style="color:#1f497d">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:</span></p>
<p class="MsoNormal"><span style="color:#1f497d"><a
moz-do-not-send="true"
href="http://qgis.org/en/_downloads/PublicQGISfinancialreport2014.pdf"
target="_blank"><a class="moz-txt-link-freetext" href="http://qgis.org/en/_downloads/PublicQGISfinancialreport2014.pdf">http://qgis.org/en/_downloads/PublicQGISfinancialreport2014.pdf</a></a></span></p>
<p class="MsoNormal"><span style="color:#1f497d"> </span></p>
<p class="MsoNormal"><span style="color:#1f497d"> </span></p>
<p class="MsoNormal"><span style="color:#1f497d">If you
think, there should be more work done to increase
the quality of QGIS, you can get involved or
contribute to the project:</span></p>
<p class="MsoNormal"><span style="color:#1f497d"><a
moz-do-not-send="true"
href="http://qgis.org/en/site/getinvolved/governance/sponsorship/sponsorship.html"
target="_blank"><a class="moz-txt-link-freetext" href="http://qgis.org/en/site/getinvolved/governance/sponsorship/sponsorship.html">http://qgis.org/en/site/getinvolved/governance/sponsorship/sponsorship.html</a></a></span></p>
<p class="MsoNormal"><span style="color:#1f497d"> </span></p>
<p class="MsoNormal"><span style="color:#1f497d">Regards,</span></p>
<p class="MsoNormal"><span style="color:#1f497d">Saber</span></p>
<p class="MsoNormal"><span style="color:#1f497d"> </span></p>
<div>
<div style="border:none;border-top:solid #b5c4df
1.0pt;padding:3.0pt 0cm 0cm 0cm">
<p class="MsoNormal"><b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif""
lang="EN-US">From:</span></b><span
style="font-size:10.0pt;font-family:"Tahoma","sans-serif""
lang="EN-US"> Qgis-user [mailto:<a
moz-do-not-send="true"
href="mailto:qgis-user-bounces@lists.osgeo.org"
target="_blank"><a class="moz-txt-link-abbreviated" href="mailto:qgis-user-bounces@lists.osgeo.org">qgis-user-bounces@lists.osgeo.org</a></a>]
<b>On Behalf Of </b>Uwe Fischer<br>
<b>Sent:</b> 19 January 2016 19:10<br>
<b>To:</b> 'qgis-user ML'<br>
<b>Subject:</b> [Qgis-user] QGIS big fail in
deleting Shapes!!</span></p>
</div>
</div>
<div>
<div class="h5">
<p class="MsoNormal"> </p>
<p class="MsoNormal"><span
style="font-family:"Verdana","sans-serif""
lang="DE">Hello all,</span></p>
<p class="MsoNormal"><span
style="font-family:"Verdana","sans-serif""
lang="DE"> </span></p>
<p class="MsoNormal"><span
style="font-family:"Verdana","sans-serif""
lang="DE">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: <a
moz-do-not-send="true"
href="https://hub.qgis.org/issues/11007"
target="_blank"><a class="moz-txt-link-freetext" href="https://hub.qgis.org/issues/11007">https://hub.qgis.org/issues/11007</a></a></span></p>
<p class="MsoNormal"><span
style="font-family:"Verdana","sans-serif""
lang="DE"> </span></p>
<p class="MsoNormal"><span
style="font-family:"Verdana","sans-serif""
lang="DE">It is a well known problem (for 1,5
years!!) that <i><u>QGIS is not able to delete
shapes in a reliable way</u></i>!! 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.</span></p>
<p class="MsoNormal"><span
style="font-family:"Verdana","sans-serif""
lang="DE"> </span></p>
<p class="MsoNormal"><span
style="font-family:"Verdana","sans-serif""
lang="DE">My questions are:</span></p>
<p><span style="font-family:Symbol" lang="DE">·</span><span
style="font-size:7.0pt;font-family:"Times
New Roman","serif"" lang="DE">
</span><span
style="font-family:"Verdana","sans-serif""
lang="DE">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 ...</span></p>
<p><span style="font-family:Symbol" lang="DE">·</span><span
style="font-size:7.0pt;font-family:"Times
New Roman","serif"" lang="DE">
</span><span
style="font-family:"Verdana","sans-serif""
lang="DE">does anybody have information about
how they are planning to handle this problem at
the development team?</span></p>
<p><span style="font-family:Symbol" lang="DE">·</span><span
style="font-size:7.0pt;font-family:"Times
New Roman","serif"" lang="DE">
</span><span
style="font-family:"Verdana","sans-serif""
lang="DE">is there a workaround for this? Do the
GRASS vector tools bring out reliable results?</span></p>
<p><span style="font-family:Symbol" lang="DE">·</span><span
style="font-size:7.0pt;font-family:"Times
New Roman","serif"" lang="DE">
</span><span
style="font-family:"Verdana","sans-serif""
lang="DE">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?</span></p>
<p class="MsoNormal"><span
style="font-family:"Verdana","sans-serif""
lang="DE"> </span></p>
<p class="MsoNormal"><span
style="font-family:"Verdana","sans-serif""
lang="DE"> </span></p>
<p class="MsoNormal"><span
style="font-family:"Verdana","sans-serif""
lang="DE">Regards,</span></p>
<p class="MsoNormal"><span
style="font-family:"Verdana","sans-serif";font-variant:small-caps"
lang="DE">Uwe Fischer</span></p>
</div>
</div>
</div>
<br>
<br>
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<br>
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</div>
-- <br>
<div class="gmail_signature">
<div dir="ltr">______________________________________________<br>
Mats Elfström, Väpplingvägen 21, SE-227 38 LUND, Sweden<br>
tel: +46 46 145959 / mob: +46 70 595 39 35<br>
alt e-mail: <a moz-do-not-send="true"
href="mailto:mats.elfstrom@telia.com" target="_blank">mats.elfstrom@giskraft.com</a><br>
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<pre class="moz-signature" cols="72">--
Matthias Kuhn
OPENGIS.ch - <a class="moz-txt-link-freetext" href="https://www.opengis.ch">https://www.opengis.ch</a>
Spatial • (Q)GIS • PostGIS • Open Source</pre>
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