[FEATURE][QGIS-Server] Add Web Coverage Service support : funded Ifremer

[rldhont]

QGIS-Server already supports standards : Web Map Service (WMS version 1.3.0
and 1.1.1) and Web Feature Service (WFS version 1.0.0) and Web Feature
Service with Transaction (WFS-T).
The French Research Institute, Ifremer, would like that QGIS-Server supports
all the OGC standards.
We (3Liz) are implementing the Web Coverage Service (WCS version 1.0.0)
support in QGIS-Server.

[gioman]

Very nice news! Thanks!

[mhugent]

QGIS as a WCS server, that's really cool!

[slarosa]

Hi René,
I am trying this great feature but unfortunately getting a segfault. I am not sure whether it depend from your changes, but in stacktrace (below) I see something related to WCS stuff, it occurs when I change CRS in project properties dialog QGIS crashes:

Program received signal SIGSEGV, Segmentation fault.
0x000000000079df7f in QgsProjectProperties::apply (this=0x58aac30)
    at /home/sam/pacchetti_gis/QGIS/src/app/qgsprojectproperties.cpp:841
841     QString id = twWCSLayers->item( i, 0 )->data( Qt::UserRole ).toString();
(gdb) bt
#0  0x000000000079df7f in QgsProjectProperties::apply (this=0x58aac30)
    at /home/sam/pacchetti_gis/QGIS/src/app/qgsprojectproperties.cpp:841
#1  0x000000000092c70e in QgsProjectProperties::qt_static_metacall (_o=0x58aac30, _c=QMetaObject::InvokeMetaMethod, _id=4, 
    _a=0x7fffffffa3b0) at /home/sam/pacchetti_gis/QGIS/build-master/src/app/moc_qgsprojectproperties.cxx:126
#2  0x00007ffff353054f in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) ()
   from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#3  0x00007ffff353054f in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) ()
   from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#4  0x00007ffff353054f in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) ()
   from /usr/lib/x86_64-linux-gnu/libQtCore.so.4
#5  0x00007ffff2f29f32 in QAbstractButton::clicked(bool) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#6  0x00007ffff2c7e06e in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#7  0x00007ffff2c7e8a0 in ?? () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#8  0x00007ffff2c7eb0c in QAbstractButton::mouseReleaseEvent(QMouseEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#9  0x00007ffff2913e10 in QWidget::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#10 0x00007ffff28c470c in QApplicationPrivate::notify_helper(QObject*, QEvent*) ()
   from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#11 0x00007ffff28c93eb in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQtGui.so.4
#12 0x00007ffff49b0a48 in QgsApplication::notify (this=0x7fffffffd920, receiver=0x57953b0, event=0x7fffffffaff0)
    at /home/sam/pacchetti_gis/QGIS/src/core/qgsapplication.cpp:229
#13 0x00007ffff351ab5e in QCoreApplication::notifyInternal(QObject*, QEvent*) ()
   from /usr/lib/x86_64-linux-gnu/libQtCore.so.4

Steps:

• load postgis layer (32633)
• load raster layer (32633)
• change crs to 4326
• QGIS crashes

Also, I noticed that when add a new layer, which is different from Raster, it adds a new empty row into table (see image)

Please, could you check out it ?

Thanks!

[rldhont]

Hi Salvatore,

My steps to the crash :

• add a raster layer
• add a vector layer
• open project properties
• change the project CRS, automatic reprojection is already active
• save the changes
• navigate in the map
• open the project properties -> CRASH

I'll investigate

[rldhont]

I corrected it
commit 443a416

[slarosa]

Works fine now, thanks!