[mkgmap-dev] [PATCH] Alpha code for pedestrian routing in plazas

Sun May 31 22:43:08 BST 2009

On May 29, 2009, at 10:18 PM, gypakk at gmx.eu wrote:

>> Good idea with this! What do you think about creating pedestrian ways
>> that connect to each of the streets that touch the plaza instead of
>> just creating ways around the outside?
>
> That was my first thought too when I read Clintons post.
> But... what it the pedestrian area is shaped as a banana? Then you  
> could get ways displayed which lead straight through a building.  
> Does anybody have an Idea to solve this?

Yes, these are things I have thought about. I believe this is a  
general routing problem with OSM, and not just one affecting Garmin  
maps created by mkgmap: this also applies to other routing programs  
which attempt to provide routes suitable for pedestrians.

Does anyone know how the other OSM routing programs (such as  
travelling salesman, etc.) solve this? (If at all)

I have also noticed that the success of pedestrian routing through  
squares seems to be largely dependent on the person doing the mapping.  
For example, most of the pedestrian squares in Rome appear to be  
nicely linked to other streets; Siena, on the other hand, has its  
Piazza del Campo drawn as an independent polygon.

Somehow I suspect that for pedestrian routing to work reliably, in any  
program, mappers must manually enter connecting ways.

What do you think?

Cheers.