These instructions cover installing QGIS on OS X. Note that OS X 10.7 (Lion) is the minimum supported version.
You will need 3 separate installers to get QGIS onto your computer. They can be found from the QGIS download page, or you can click the following links:
- GDAL (+ GEOS, PROJ, SQlite, UnixImageIO, and numPy)
- Matplotlib
- QGIS
- Open the GDAL disk image (e.g., GDAL_Complete-1.11.dmg).
- Open GDAL Complete (from your desktop or a Finder window).
- Right click on GDAL Complete.pkg and click Open. When prompted, click Open. You have to open it this way or it probably will not open.
- Click Continue on the Introduction.
- Click Continue on the Read Me.
- Read the license agreement, and click Continue.
- Click Install. Enter your password when prompted.
- After the install is finished, click Close then you can eject GDAL Complete and trash the .dmg if you wish.
- Open the Matplotlib disk image (e.g., matplotlib-1.3.1-2.dmg)
- Open matplotlib (from your desktop or a Finder window)
- Right click on matplotlib.pkg and click Open, then Open again on the prompt; again, you will likely have to do this instead of double clicking to get it to open.
- As with GDAL, click Continue, Continue, Continue, Install, enter your password, and let it install.
- After the install is finished, click Close then you can eject matplotlib and trash the .dmg if you wish.
- Open the QGIS disk image (e.g., QGIS-2.4.0-1.dmg)
- Open QGIS (from the desktop or a Finder window)
- Right click on Install QGIS.pkg and click Open, then Open on the prompt.
- As with GDAL, click Continue, Continue, Continue, Install, enter your password, and let it install.
- Once the install has finished, click Close. Eject QGIS and trash the .dmg if you wish.
- Open your Applications folder in Finder.
- Locate QGIS and double click it.
Congratulations! You now have a working QGIS install on your Mac.