Installed QGIS 3 in prescribed manner. (i.e. FIRST python, then GDAL, then QGIS 3). Then installed matplotlib manually by typing "sudo pip3 install matplotlib" into terminal. Then, (as per instructions on https://fromgistors.blogspot.com/p/plugin-installation2.html) I went to https://www.kyngchaos.com/software/python/ to download:
- NumPy 1.9.2-1
- SciPy 0.16.0-1
Did not download matplotlib 1.4.3-1 because I believe I installed that when I typed "sudo pip3 install matplotlib" into terminal.
Rebooted macbook (OS 10.14.2) Started QGIS 3 alright. Went into manage plugins and clicked : "re-install semi-automatic classification plugin". QGIS 3 just crashed.
What's going on ?