Using this Guide - University of Virginia Library Research ...

When the download is complete, double click the executable (e.g. “QGIS-OSGeo4W-3.4.8-1-Setup-x86_64.exe”) to install the software.After installation you will have a QGIS 3.4 folder, most likely in your “Programs” folder. For Mac. Click the “Download for Mac … ................
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