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How to debug QGIS application-QGIS plugins?
After a few seconds debugger stops QGIS at given breakpoint, on main function: QGIS execution stopped on main function but gdb also reports it can not find source file containing source code of main function. And here we come to the main problem about browsing source code of debugging context.
How is the map canvas implemented in QGIS?
Map canvas is implemented as QgsMapCanvas class in qgis.gui module. The implementation is based on the Qt Graphics View framework. This framework generally provides a surface and a view where custom graphics items are placed and user can interact with them.
Which is the most important widget in QGIS?
The Map canvas widget is probably the most important widget within QGIS because it shows the map composed from overlaid map layers and allows interaction with the map and layers. The canvas shows always a part of the map defined by the current canvas extent.
How does the canvas interact with the map?
The canvas shows always a part of the map defined by the current canvas extent. The interaction is done through the use of map tools : there are tools for panning, zooming, identifying layers, measuring, vector editing and others.
How to set a breakpoint for a QGIS plugin?
So start QGIS in case you did not already and click the bug symbol. Now you can set a breakpoint and as soon as the code hits it, execution will stop and you can inspect the current state of your plugin.
How to fix QGIS importerror in Python 2.7?
Make a copy of qgis-unstable.bat and rename it pyscripter.bat. Open it in an editor. And remove the last line, the one that starts QGIS. Add a line that points to your Pyscripter executable and add the commandline argument that sets the version of Python to be used (2.7 in the case of QGIS >= 2.0)
Why does eclipse know about the QGIS API?
A very handy feature is to have Eclipse actually know about the QGIS API. This enables it to check your code for typos. But not only this, it also enables Eclipse to help you with autocompletion from the imports to API calls. To do this, Eclipse parses the QGIS library files and gets all the information out there.
Why is the pyrsgis plugin missing from QGIS?
You are missing the pyrsgis python module, which must be required by that plugin. Please execute either CMD, PowerShell, or Windows Terminal as Admininstrator. Ensure QGIS is completely closed. Re-Launch QGIS and it should work, provided there are no other missing dependencies.
Can this be originated by non ASCII character in QGIS version ” Nødebo “?
Note2: can this be originated by the non ASCII character in the QGIS version “Nødebo”? to install the required module. In my case this helped (Ubuntu 16.04): Download the (experimental) version from http://plugins.qgis.org/plugins/ Then install the Plugin via plugins > manage and install plugins > install from zip > your zip file
What to do if QGIS is missing OpenSSL?
Please execute either CMD, PowerShell, or Windows Terminal as Admininstrator. Ensure QGIS is completely closed. Re-Launch QGIS and it should work, provided there are no other missing dependencies. In response to your additional information above: You are also missing OpenSSL for Windows.
How does the remote debug plugin in Eclipse work?
Eclipse is now waiting for a connection from QGIS to its debug server and when QGIS connects to the debug server it will allow it to control the python scripts. That’s exactly what we installed the Remote Debug plugin for.
Which is the best IDE for writing QGIS plugins?
PyCharm is an IDE for Python developed by JetBrains. There is a free version called Community Edition and a paid one called Professional. You can download PyCharm on the website: https://www.jetbrains.com/pycharm/download We are assuming that you have compiled QGIS on Ubuntu with the given build directory ~/dev/qgis/build/master.