network profile
| bio | website | |
|---|---|---|
| location | Quebec | |
| age | ||
| visits | member for | 10 months |
| seen | Mar 21 at 18:04 | |
| stats | profile views | 2 |
Studying in Geomatic applied to Environnement, Sherbrooke, Qc.
I'm new to GIS and programming, but I learn fast and I'm an hard worker ;)
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Jul 18 |
awarded | Teacher |
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Jul 17 |
awarded | Supporter |
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Jul 17 |
answered | Improve performances on distance coverage routing - PostgreSQL |
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Jul 17 |
comment |
Improve performances on distance coverage routing - PostgreSQL Well... the result I want will look almost exactly as your map, but I would use other criteras. The problem here though is to build the algorithm to do so on a postgreSQL DB, using pgRouting (I already got a license of arcGIS which does exactly this, but we want to go opensource) |
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Jul 16 |
comment |
Improve performances on distance coverage routing - PostgreSQL Hum, no, I really need to know every routes that can be reached, and to what length, from the startpoint over the given distance. Shortest path would only give one, and needs a endpoint... Sorry for my ignorance, but... RW? |
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Jul 16 |
comment |
Improve performances on distance coverage routing - PostgreSQL Oh, and a problem that brings Driving_distance is that it stops on the fartest vertex it can on the network... while the real distance is very often not on a vertex, but on the line itself! (I hope I'm not just missing something here though!) |
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Jul 16 |
comment |
Improve performances on distance coverage routing - PostgreSQL Well, it looks like it yes. I have to be able to point a fire station (for example) and get it's coverage for a given distance (let say, 10k, 15k...). So if we could switch the driving time of this to an effective distance, it would make it! Could you tell me more? (And I have to give that note: The problem is not the idea of the how to do it, but how to do it in a relatively fast way :) ) |
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Jul 16 |
awarded | Editor |
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Jul 16 |
comment |
Improve performances on distance coverage routing - PostgreSQL I added a case in the question (3rd picture) that shows a problem I think isochrones will give me. Am I wrong to think that in this case (above), the answer won't be precise? |
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Jul 16 |
comment |
Improve performances on distance coverage routing - PostgreSQL I just added a comment in the question above answering the thing about Driving_distance, though it gave me an idea I'll put to the test tomorrow... |
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Jul 16 |
revised |
Improve performances on distance coverage routing - PostgreSQL I lacked precision in my question! |
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Jul 14 |
awarded | Student |
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Jul 13 |
asked | Improve performances on distance coverage routing - PostgreSQL |
