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Dima size depending on number of relations?

Posted: Mon Jun 02, 2025 10:01 am
by Bernd Welter
Hi there,
as far as I know the required filespace of a DIMA grows linear with the number of stored relation (or quadratic with ths number of locations in square shaped matrices). Can you give me a more precise formula I can use to determine the space?
What is the impact of the DIMA's time dependency mode?
Here's some info from DEV (Thanks, Frank!)
  • Locations (disttab.loc):
    • 8 bytes header
    • 262 bytes per unique location
  • Relations disttab.dat):
    • 40 bytes header
    • 8 bytes per relation for distance, travel time, violated and estimated
    • optional 4 bytes per relation for toll costs
    • optional 24 bytes per relation for travel time profiles (MultiTravelTimes)
Bernd