The SWC visualiser display the incorrect radius, the following line:
https://github.com/MartinPyka/SWC2Blender/blob/master/io_mesh_swc/operator_swc_import.py#L73
The data should be read from position 4 not 5.
I made some other updates also a while back, you can find a copy of your code with my alterations here for comparison:
https://github.com/Hjorthmedh/Snudda/tree/master/snudda/plotting/Blender/io_mesh_swc
The SWC visualiser display the incorrect radius, the following line:
https://github.com/MartinPyka/SWC2Blender/blob/master/io_mesh_swc/operator_swc_import.py#L73
The data should be read from position 4 not 5.
I made some other updates also a while back, you can find a copy of your code with my alterations here for comparison:
https://github.com/Hjorthmedh/Snudda/tree/master/snudda/plotting/Blender/io_mesh_swc