Bug report #19914
using the console and cloning a symbol from a graduated style layer crashes qgis 3
| Status: | Closed | ||
|---|---|---|---|
| Priority: | Normal | ||
| Assignee: |  Alessandro Pasotti | ||
| Category: | PyQGIS Console | ||
| Affected QGIS version: | 3.3(master) | Regression?: | No |
| Operating System: | Easy fix?: | No | |
| Pull Request or Patch supplied: | No | Resolution: | invalid |
| Crashes QGIS or corrupts data: | Yes | Copied to github as #: | 27738 |
Description
User Feedback
Working on a project with quite a few layers loaded. I selected a graduated styled layer and I am attempting to change the sizes of the symbol via the python console. As soon as I issue the clone() command it crashes.¶
layer = qgis.utils.iface.mapCanvas().currentLayer()
renderer = layer.renderer()
current_symbol = renderer.ranges()[1].symbol()
new_symbol = current_symbol.clone()
I've tried it in the 3.0 version and also deleted all layers except one graduated layer with 5 ranges.
also the same effect with this sequence: layer = qgis.utils.iface.mapCanvas().currentLayer()
renderer = layer.renderer()
current_symbol = renderer.ranges()[1].symbol()
current_symbol.size()
Report Details¶
I tried it with the data defined override for symbol size on and off with the same effect. Also with different index number in the range.
Crash ID: afdb5feb28fe4c13c1eaedd723b645ed4adbbf15
Stack Trace
meth_QgsMarkerSymbol_clone sip_corepart1.cpp:339792 PyCFunction_FastCallDict : PyObject_GenericGetAttr : PyEval_EvalFrameDefault : PyErr_Occurred : PyEval_EvalCode : PyDict_SetItemId : PyDict_SetItemId : PyCFunction_FastCallDict : PyObject_GenericGetAttr : PyEval_EvalFrameDefault : PyObject_GenericGetAttr : PyEval_EvalFrameDefault : PyErr_Occurred : PyObject_GenericGetAttr : PyEval_EvalFrameDefault : PyErr_Occurred : PyObject_GenericGetAttr : PyEval_EvalFrameDefault : PyObject_GenericGetAttr : PyEval_EvalFrameDefault : PyObject_GenericGetAttr : PyEval_EvalFrameDefault : PyFunction_FastCallDict : PyObject_CallFunctionObjArgs : PyObject_Call : PyInit_sip : PyInit_Qsci : QWidget::event : QFrame::event : QAbstractScrollArea::event : PyInit_Qsci : QApplicationPrivate::notify_helper : QApplication::notify : QgsApplication::notify qgsapplication.cpp:380 QCoreApplication::notifyInternal2 : QSizePolicy::QSizePolicy : QSizePolicy::QSizePolicy : QApplicationPrivate::notify_helper : QApplication::notify : QgsApplication::notify qgsapplication.cpp:380 QCoreApplication::notifyInternal2 : QGuiApplicationPrivate::processKeyEvent : QWindowSystemInterface::sendWindowSystemEvents : QEventDispatcherWin32::processEvents : CallWindowProcW : DispatchMessageW : QEventDispatcherWin32::processEvents : qt_plugin_query_metadata : QEventLoop::exec : QCoreApplication::exec : main main.cpp:1470 WinMain mainwin.cpp:170 __scrt_common_main_seh exe_common.inl:253 BaseThreadInitThunk : RtlUserThreadStart :
QGIS Info
QGIS Version: 3.3.0-Master
QGIS code revision: a2db44c383
Compiled against Qt: 5.9.2
Running against Qt: 5.9.2
Compiled against GDAL: 2.2.4
Running against GDAL: 2.2.4
System Info
CPU Type: x86_64
Kernel Type: winnt
Kernel Version: 10.0.17134
History
#1
Updated by Alessandro Pasotti over 5 years ago
- Resolution set to invalid
- Assignee set to Alessandro Pasotti
- Status changed from Open to Closed
you need to store a reference to the range object or the symbol will be garbage collected before you can call clone() on it:
layer = qgis.utils.iface.mapCanvas().currentLayer() renderer = layer.renderer() renderer_range = renderer.ranges()[1] current_symbol = renderer_range.symbol() new_symbol = current_symbol.clone()