Hi,

I'm aware that you can use things like the pgRouting plugin for shortest path 
calculations but when looking at the default functions is there a sensible way 
to speed up the calculations?

I've just run a couple of tests using an Oracle database based routing layer 
and it runs but seems to take a long time to build the graph. I wondered if 
there is a plugin which stores some sort of optimised network to speed up the 
process or perhaps a type of index I could put on the network?

At present the network is big so I guess perhaps some form of clip then run 
process might be helpful?

I just thought I'd email to see what others do as I've not looked at routing in 
QGIS for some years now and I'd prefer to avoid more complex options such as 
pgRouting if possible.

Thanks,
Paul
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