[QGIS-Developer] QGIS FCGI Server 3.9.0 - JPEG renders but PNG empty
Jorge Gustavo Rocha
jgr at di.uminho.pt
Tue Oct 1 13:58:18 PDT 2019
Hi Tom,
Thanks for the feedback. Good to know that you found the problem.
I'll add the ldd qgis_mapserv.fcgi to my list of things to check, if
something is wrong with QGIS Server.
Best regards,
Jorge
Às 20:50 de 01/10/19, Tom Vanzieleghem escreveu:
> Hi Tomas,
>
> Thank you for your suggestions but in the meantime i fixed the issue
> that was due to different versions of the libpng library on my system.
>
> I changed the compilation of GDAL to build against the external (system)
> libpng library instead of the internal one provided with the GDAL source.
>
> Issue was mentioned and fixed before in
> http://osgeo-org.1560.x6.nabble.com/gdal-dev-compile-gdal-using-the-libpng-1-6-26-td5342371.html
>
> Best regards,
>
> Tom
>
>
> Op 30 sep. 2019 om 21:00 heeft qgis-developer-request at lists.osgeo.org
> <mailto:qgis-developer-request at lists.osgeo.org> het volgende geschreven:
>
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>> Today's Topics:
>>
>> 1. Plugin [923] Azimuth Measurement approval notification.
>> (noreply at qgis.org <mailto:noreply at qgis.org>)
>> 2. Re: Porting Create Grid algorithm to C++ (Nyall Dawson)
>> 3. Re: Updating osgeo4w to qt 5.12.4/5.13.1 (Nyall Dawson)
>> 4. Re: QGIS FCGI Server 3.9.0 - JPEG renders but PNG empty
>> (Tomas Straupis)
>> 5. Re: Updating osgeo4w to qt 5.12.4/5.13.1 (Jürgen E. Fischer)
>> 6. Plugin [995] dzetsaka : Classification tool approval
>> notification. (noreply at qgis.org <mailto:noreply at qgis.org>)
>> 7. No more layout page properties in contextual menu? (DelazJ)
>>
>>
>> ----------------------------------------------------------------------
>>
>> Message: 1
>> Date: Sun, 29 Sep 2019 19:47:35 -0000
>> From: noreply at qgis.org <mailto:noreply at qgis.org>
>> To: thomas.gratier at gmail.com <mailto:thomas.gratier at gmail.com>,
>> qgis-developer at lists.osgeo.org <mailto:qgis-developer at lists.osgeo.org>
>> Subject: [QGIS-Developer] Plugin [923] Azimuth Measurement approval
>> notification.
>> Message-ID: <20190929194735.8379.64507 at 2c6504964296>
>> Content-Type: text/plain; charset="utf-8"
>>
>>
>> Plugin Azimuth Measurement approval by pcav.
>> The plugin version "[923] Azimuth Measurement 0.2.1" is now approved
>> Link: http://plugins.qgis.org/plugins/AzimuthMeasurement/
>>
>>
>> ------------------------------
>>
>> Message: 2
>> Date: Mon, 30 Sep 2019 10:08:14 +1000
>> From: Nyall Dawson <nyall.dawson at gmail.com
>> <mailto:nyall.dawson at gmail.com>>
>> To: Clemens Raffler <clemens.raffler at gmail.com
>> <mailto:clemens.raffler at gmail.com>>
>> Cc: qgis-developer <qgis-developer at lists.osgeo.org
>> <mailto:qgis-developer at lists.osgeo.org>>
>> Subject: Re: [QGIS-Developer] Porting Create Grid algorithm to C++
>> Message-ID:
>> <CAB28AsgbRKab4uP5GyFL8-4rkbcEBDr=q5FPtzxWLy=cx5z5Yg at mail.gmail.com
>> <mailto:CAB28AsgbRKab4uP5GyFL8-4rkbcEBDr=q5FPtzxWLy=cx5z5Yg at mail.gmail.com>>
>> Content-Type: text/plain; charset="UTF-8"
>>
>> On Mon, 30 Sep 2019 at 03:06, Clemens Raffler
>> <clemens.raffler at gmail.com <mailto:clemens.raffler at gmail.com>> wrote:
>>>
>>> Dear QGIS Developers,
>>>
>>> lately I have been using the 'Create Grid' algorithm a lot on huge areas
>>> and with a rather fine grid resolution. I was not surprised that
>>> creating a very fine grid took a very long time as the algorithm is
>>> currently implemented in python.
>>>
>>> In order to speed up my work I decided to experiment a little with C++
>>> (coming from a python background) development in QGIS and ported the
>>> algorithm to C++ based on other native algorithms. The code is working
>>> very well, the grid creation process has been sped up significantly. I
>>> would now like to contribute the code to the QGIS project so that other
>>> users can benefit from the speedup.
>>
>> Sounds fantastic, and a very valuable (and desired) contribution! Nice
>> work!
>>
>>> - Is there any reason why certain algorithms (eg. the Create Grid alg)
>>> should not be available in C++?
>>
>> No. In fact, the opposite! The long-term goal is to port all these
>> algorithms away from Python and to c++. Python is GREAT for plugin
>> based algorithms and for quickly developing new algorithms, but it's
>> just not competitive in speed vs the c++ algorithms. We've also had a
>> LOT of issues in the past where Python algorithms break due to lack of
>> compile time checks when QGIS API (or other Processing Python code) is
>> revised. In contrast, I'm not aware of a single regression of this
>> nature in any of the ported c++ algorithms.
>>
>> (My advice for readers out there: don't write big, complex
>> applications in Python. full stop.)
>>
>>> - As I am not familiar with the processes how native processing
>>> algorithms get committed to the main repository (pull requests,
>>> prepare-commit.sh, sip, etc.), would anybody like to help/mentor/guide
>>> me through this process and review the code?
>>
>> **raises hand**
>>
>>> - Are there any special requirements on testing infrastructure for C++
>>> algs which should be implemented too (I have not worked with tests so
>>> far)?
>>
>> Looks like there's already good test coverage with the existing Python
>> algorithm. These existing tests will carry over to the c++ port, so
>> it's likely that nothing extra is required here.
>>
>> In general, there's some "desirable changes" which we are encouraging
>> when porting an existing algorithm to c++, but none of them apply in
>> this particular case. Specifically:
>>
>> - use the QgsProcessingFeatureBasedAlgorithm subclass wherever possible.
>> - add support for dynamic parameters where desirable.
>>
>>
>>> So far, my experience with porting python algs to C++ has been very good
>>> with Create Grid and I would like to work on other ports if everything
>>> goes well.
>>
>> That's great to hear! I'd suggest having a look at a really simple
>> feature based algorithm like DensifyGeometries as a great candidate
>> for learning. There's almost no logic in the Python code for this one,
>> so it would be a great one to learn the overall process of porting to
>> c++ without the complexities of having to port a lot of
>> python-specific logic.
>>
>> Nyall
>>
>>
>> ------------------------------
>>
>> Message: 3
>> Date: Mon, 30 Sep 2019 10:09:19 +1000
>> From: Nyall Dawson <nyall.dawson at gmail.com
>> <mailto:nyall.dawson at gmail.com>>
>> To: Jürgen E. Fischer <jef at norbit.de <mailto:jef at norbit.de>>
>> Cc: qgis-developer <qgis-developer at lists.osgeo.org
>> <mailto:qgis-developer at lists.osgeo.org>>
>> Subject: Re: [QGIS-Developer] Updating osgeo4w to qt 5.12.4/5.13.1
>> Message-ID:
>> <CAB28AsjSCV17DVr1rr+4GCG+N4bJ_WMXnc3WHKTBYZq=nUp9ng at mail.gmail.com
>> <mailto:CAB28AsjSCV17DVr1rr+4GCG+N4bJ_WMXnc3WHKTBYZq=nUp9ng at mail.gmail.com>>
>> Content-Type: text/plain; charset="UTF-8"
>>
>> On Sat, 28 Sep 2019 at 19:31, Jürgen E. Fischer <jef at norbit.de
>> <mailto:jef at norbit.de>> wrote:
>>>
>>> Hi Nyall,
>>>
>>> On Thu, 26. Sep 2019 at 09:30:47 +1000, Nyall Dawson wrote:
>>>> Is there any plans on the horizon for updating the Qt build in
>>>> osgeo4w? I ask because of these issues (all relate to crashes when
>>>> exporting hi resolution layouts):
>>>
>>>>> - https://github.com/qgis/QGIS/issues/31100
>>>>> https://github.com/qgis/QGIS/issues/29065 and
>>>>> https://github.com/qgis/QGIS/issues/29768
>>>>> https://github.com/qgis/QGIS/issues/29064
>>>>> https://github.com/qgis/QGIS/issues/29065
>>>>
>>>> These have a confirmed fix in qt 5.12.4 and 5.13.1 (I've verified):
>>>
>>>> See bugreports.qt.io/browse/QTBUG-75082
>>>> <http://bugreports.qt.io/browse/QTBUG-75082> and
>>>> https://codereview.qt-project.org/c/
>>>> qt/qtbase/+/258696)
>>>
>>> Does that already also include the fixes we fund KDAB for?
>>
>> No - I'm not aware of anyone of these which have actually been merged
>> upstream yet. It's just a nice coincidence that this particular
>> upstream issue was recently solved for us.
>>
>> Nyall
>>
>>>
>>>
>>> Jürgen
>>>
>>> --
>>> Jürgen E. Fischer norBIT GmbH Tel.
>>> +49-4931-918175-31
>>> Dipl.-Inf. (FH) Rheinstraße 13 Fax.
>>> +49-4931-918175-50
>>> Software Engineer D-26506 Norden
>>> https://www.norbit.de
>>> QGIS release manager (PSC) Germany IRC: jef on
>>> FreeNode
>>
>>
>> ------------------------------
>>
>> Message: 4
>> Date: Mon, 30 Sep 2019 10:53:20 +0300
>> From: Tomas Straupis <tomasstraupis at gmail.com
>> <mailto:tomasstraupis at gmail.com>>
>> To: QGIS Developer Mailing List <qgis-developer at lists.osgeo.org
>> <mailto:qgis-developer at lists.osgeo.org>>
>> Subject: Re: [QGIS-Developer] QGIS FCGI Server 3.9.0 - JPEG renders
>> but PNG empty
>> Message-ID:
>> <CA+f=8=prbzKmHB4AU4vYOCq3JG5Hjfj5xx=+2BWLhgeRA9tC8Q at mail.gmail.com
>> <mailto:CA+f=8=prbzKmHB4AU4vYOCq3JG5Hjfj5xx=+2BWLhgeRA9tC8Q at mail.gmail.com>>
>> Content-Type: text/plain; charset="UTF-8"
>>
>> Hello, Tom
>>
>> You could probably try the method described by Jorge in QGIS-user list:
>>
>> 1. Compile QGIS with debug info.
>>
>> 2. Create a script with all FcgidInitialEnv taken from apache config
>> converted to export's like:
>> export QGIS_SERVER_LOG_FILE=/tmp/qgis-000.log
>>
>> 3. Add query string variable and project file:
>> export QUERY_STRING="SERVICE=WMS&VERSION=1.3.0&REQUEST=GetCapabilities"
>> export QGIS_PROJECT_FILE="/var/www/wms/oracle.qgs"
>>
>> 4. execute qgis_mapserv.fcgi with debug on:
>> export QGIS_DEBUG=9
>> export QGIS_LOG_FILE=/tmp/qgis.log
>> ./qgis_mapserv.fcgi
>>
>> This gives both server logs as well as debug information in separate
>> files.
>>
>> --
>> Tomas
>>
>>
>> ------------------------------
>>
>> Message: 5
>> Date: Mon, 30 Sep 2019 09:59:39 +0200
>> From: Jürgen E. Fischer <jef at norbit.de <mailto:jef at norbit.de>>
>> To: Nyall Dawson <nyall.dawson at gmail.com <mailto:nyall.dawson at gmail.com>>
>> Cc: qgis-developer <qgis-developer at lists.osgeo.org
>> <mailto:qgis-developer at lists.osgeo.org>>
>> Subject: Re: [QGIS-Developer] Updating osgeo4w to qt 5.12.4/5.13.1
>> Message-ID: <20190930075939.ipf7afnls6bsgczz at norbit.de
>> <mailto:20190930075939.ipf7afnls6bsgczz at norbit.de>>
>> Content-Type: text/plain; charset="utf-8"
>>
>> Hi Nyall,
>>
>> On Mon, 30. Sep 2019 at 10:09:19 +1000, Nyall Dawson wrote:
>>>> Does that already also include the fixes we fund KDAB for?
>>
>>> No - I'm not aware of anyone of these which have actually been merged
>>> upstream yet.
>>
>> Is there an ETA on that?
>>
>>
>> Jürgen
>>
>> --
>> Jürgen E. Fischer norBIT GmbH Tel.
>> +49-4931-918175-31
>> Dipl.-Inf. (FH) Rheinstraße 13 Fax.
>> +49-4931-918175-50
>> Software Engineer D-26506 Norden
>> https://www.norbit.de
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>> ------------------------------
>>
>> Message: 6
>> Date: Mon, 30 Sep 2019 09:50:34 -0000
>> From: noreply at qgis.org <mailto:noreply at qgis.org>
>> To: karasiak.nicolas at gmail.com <mailto:karasiak.nicolas at gmail.com>,
>> qgis-developer at lists.osgeo.org <mailto:qgis-developer at lists.osgeo.org>
>> Subject: [QGIS-Developer] Plugin [995] dzetsaka : Classification tool
>> approval notification.
>> Message-ID: <20190930095034.24825.85476 at 2c6504964296>
>> Content-Type: text/plain; charset="utf-8"
>>
>>
>> Plugin dzetsaka : Classification tool approval by pcav.
>> The plugin version "[995] dzetsaka : Classification tool 3.6" is now
>> approved
>> Link: http://plugins.qgis.org/plugins/dzetsaka/
>>
>>
>> ------------------------------
>>
>> Message: 7
>> Date: Mon, 30 Sep 2019 18:24:15 +0200
>> From: DelazJ <delazj at gmail.com <mailto:delazj at gmail.com>>
>> To: qgis-developer <qgis-developer at lists.osgeo.org
>> <mailto:qgis-developer at lists.osgeo.org>>
>> Subject: [QGIS-Developer] No more layout page properties in contextual
>> menu?
>> Message-ID:
>> <CAECJsSoFynD0ja+5Lv9T_6FdD+e61h_KNu5uN4Fo3wLbEQ4Wng at mail.gmail.com
>> <mailto:CAECJsSoFynD0ja+5Lv9T_6FdD+e61h_KNu5uN4Fo3wLbEQ4Wng at mail.gmail.com>>
>> Content-Type: text/plain; charset="utf-8"
>>
>> Hi devs,
>>
>> I'm using QGIS 3.9 ea7b27ef3e and am unable to access the page properties;
>> it used to be available with right-click in the layout but can't find it
>> there. Browsing the menus neither shows it.
>>
>> Since my version is not the latest (and osgeo4w did not let me update all
>> the day), can someone confirm whether it's a bug, a moved feature or me
>> needing new glasses?
>>
>> Regards,
>> Harrissou
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J. Gustavo
--
Jorge Gustavo Rocha
Departamento de Informática
Universidade do Minho
4710-057 Braga
Gabinete 3.29 (Piso 3)
Tel: +351 253604480
Fax: +351 253604471
Móvel: +351 910333888
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