[TCMUG] Drive Time Analysis using QGIS or other open source tools?

[Dan Little]

How does the OSM 'speed' attributes look in the Twin Cities? Are you using
that or Tiger ? Or something from MetroGIS (not sure how old/updated) that
stuff is.  Is it okay to infer speed from the classification of the road?

I did a thing on routing for FOSS4G, it's not QGIS but I did my  best to
clarify a lot of the common routing operations:
https://github.com/theduckylittle/routing-for-fun

My costs calculate "fun", but if you adjust the cost calculation to
minimize distance, maximize speed, etc. then you'd be able to generate the
routes and take the route map to calculate the rest.  There's some python
code that's not awful as well.

On Fri, Sep 23, 2016 at 12:16 PM, Jennifer Strahan <strahanjen at gmail.com>
wrote:

> Also, does anyone have road data for MN and WI that includes travel
> direction and speed fields?
>
> On Fri, Sep 23, 2016 at 12:15 PM, Jennifer Strahan <strahanjen at gmail.com>
> wrote:
>
>> Hi Everyone,
>>
>> I'm hoping to do a drive time analysis with a result that looks like the
>> attached. I tried using OpenRouteService's Accessibility Analysis, but it
>> doesn't support North America.
>>
>> I also tried the Rocky Branches Market Analysis plugin, but it is based
>> on distance rather than time.
>>
>> Any other suggestions that I should try?
>>
>> Best.
>> Jennifer
>> [image: Inline image 2]
>>
>
>
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