Here we collect answers to question which come up very often.

We will start of with this one page, maybe restructure it into sections, or even more pages if needed


How to ask a QGIS question?

If you are going to ask QGIS related question via the mailing lists, please provide enough information to help others easily understand what your problem is. Without a clear and precise question, it is very hard to answer for anybody or takes just too much time because the answer will be a question to you etc etc. You may provide information such as:

  • preferably a descriptive title for your email
  • which QGIS version you used at that moment (exact)
  • what are you expecting to get
  • if applicable, what have you tried and the result you got
  • if your question is about something broken, you may also provide:
    • what exactly is the error (if possible: screendump, stacktrace, copy of error text)
    • which Operating System and version
    • how you installed it (osgeo4w? standalone-installer? own build?)
    • at what time did it break (reinstall, new install, system update, project changes)

Keep in mind that the more precise is your question, the quicker and more accurate can be the answer.


In case of a broken function, you may give a look at QGIS issue tracker before mailing to the list. More information at Bugs, Features and Issues.

How are QGIS release names selected?

After a succesfull developer meeting in Zurich (Switzerland), we decided that the next release should be related to it. Since then, all releases have been named after locations of our developer meetings.

How to cite QGIS?

To cite QGIS in your piece of work, or for an assignment, this general citation might be helpful: “QGIS Development Team (YEAR). QGIS Geographic Information System. Open Source Geospatial Foundation Project. http://qgis.osgeo.org”.

Can I open ECW files with QGIS?

Yes you can… BUT depending on your Operating System, it is more or less difficult.

If you are under Windows and are using the OSGeo4w installer, it is included.

If you are using OS X, you can find the ECW plugin and install instructions at http://www.kyngchaos.com/software/frameworks

For other instructions, eg look here: http://www.faunalia.com/content/adding-ecw-support-quantum-gis


Can I compile QGIS myself?

Yes, compiling QGIS from source is possible whatever OS you use (Windows, OS X, Linux). Please read Building QGIS from source