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Aug
30
comment tool to find the routing distance between two latitude/longitude points using OSM data
CAn you project the point to the nearest line and use the projection for mapping?
Aug
29
comment What is the best open-source web mapping solution for handling 3000+ polygons
Can you rasterize these polygons? or perhaps use a feature server such a geoserver or featureserver?
Aug
28
revised How to obtain road classification type at a point via nominatim?
edited title
Aug
28
comment How to obtain road classification type at a point via nominatim?
I think road hierarchy is usually a jurisdictional manner in the true transportation sense. You're best bet is to contact your local transportation agency or the agency responsible for the data and get their GIS classification scheme + layer. I'm not sure about the UK, but in North America a lot of this data is available online for free.
Aug
26
comment Looking for a functionality in QGIS to find all neigbours in a polygon layer
@NathanW good point. I've never used spatialite. Feel free to edit or repost an answer using it and i'll delete my answer after that.
Aug
26
answered Looking for a functionality in QGIS to find all neigbours in a polygon layer
Aug
26
comment Help with Shortest path Algorithm for enormous bus routes database
to add to @Llaves comment, perhaps look into shortest "Cost" where cost is a function of time, distance, $, and any other variable you would like to add to it
Aug
26
comment Help with Shortest path Algorithm for enormous bus routes database
If this is a transportation planning exercise, you're better off aggregating the stops into a multi-tier system going from more aggregate to disaggregate. The bigger zones tell you about regional traffic, then as the zones get smaller, you can tell more about traffic dynamics and patterns. Determining a Transit O/D (between each stop) is not that beneficial from the grand scheme of things
Aug
24
revised Data attributes in Illinois legislative and senate TIGER shapefile
formatting and title change to match question
Aug
24
answered Which pgrouting workshop or tutorial is most current?
Aug
24
accepted Create an optimized point layer derived from a road layer so that the driving distance between each point is x
Aug
24
comment Create an optimized point layer derived from a road layer so that the driving distance between each point is x
This is absolutely awesome.
Aug
23
comment Create an optimized point layer derived from a road layer so that the driving distance between each point is x
@whuber Also, I have a smaller layer which is a subset of the road network where the equipment will go on.
Aug
23
comment What GIS software did you purchase to work with Tiger data?
What is your usage purpose of the data?
Aug
23
comment Create an optimized point layer derived from a road layer so that the driving distance between each point is x
@whuber the equipment must be located on the network itself similar to underground loops or overhead signs.
Aug
23
comment Create an optimized point layer derived from a road layer so that the driving distance between each point is x
@whuber you are correct in your assumptions and interpretation
Aug
23
comment Create an optimized point layer derived from a road layer so that the driving distance between each point is x
@whuber , is my second edit more comprehensive, or is there anything you'd like to me to add or expand upon?
Aug
23
revised Create an optimized point layer derived from a road layer so that the driving distance between each point is x
added 417 characters in body
Aug
23
revised Create an optimized point layer derived from a road layer so that the driving distance between each point is x
added 167 characters in body; edited tags
Aug
23
comment Reinventing the wheel: Public Transit System
As a transportation and traffic guy, I would suggest you speak with the local GIS and traffic folks about what they use for GIS systems. It has been my experience that a lot of times, different municipal offices build GIS systems in silos rather than in coordination. Also for the purposes of traffic planning and modeling, it would help us more if the systems were interoperable.