A new tool based on Graphserver
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Hannes Junnila
Apr 9, 2011, 3:54:47 PM4/9/11
to Graphserver
Hello,
I have been working on a new tool for visualizing transit data. The
program is based on Graphserver and related scripts (old copy of
transitshed), but also implements features such as finding POIs based
on travel time. The tool can be found at http://eradix.net:51808/
I have also done some visualizations based on this engine, which I
think are of interest. The first one is quantifying transitability
(http://www.isk.kth.se/~haju/transitability_2253858_map.png). This is
done by creating 30 min isochrones, and counting how many street nodes
are within that range. The node cont works as quite good proxy for the
number of inhabitants+working places. This is done as it is had to get
that data with good granularity due to data security issues. The green
colour represents best "transitability", and the red is 1% of the
maximum. Similar maps can be drawn with other data, such as
reachability to fast-food places during the night (http://
www.isk.kth.se/~haju/transitability_498789_kebab_0130-0230.png). The
maps could be used for all kinds of interesting things.
The tool is currently only available for the Helsinki region and my
question is, do you think there would be any use for a tool that could
provide this kind of maps by user specification in other cities? If
yes, how do you think I should go forward with it, or if you have any
comments or tips for functionality that you would find interesting?
Also the tool uses the master-branch from graphserver + serialization
from the pull request + transit slack from Andrew. Which branches/
patchsets do you think would be of interest?
Best regards,
Hannes Junnila
I have been working on a new tool for visualizing transit data. The
program is based on Graphserver and related scripts (old copy of
transitshed), but also implements features such as finding POIs based
on travel time. The tool can be found at http://eradix.net:51808/
I have also done some visualizations based on this engine, which I
think are of interest. The first one is quantifying transitability
(http://www.isk.kth.se/~haju/transitability_2253858_map.png). This is
done by creating 30 min isochrones, and counting how many street nodes
are within that range. The node cont works as quite good proxy for the
number of inhabitants+working places. This is done as it is had to get
that data with good granularity due to data security issues. The green
colour represents best "transitability", and the red is 1% of the
maximum. Similar maps can be drawn with other data, such as
reachability to fast-food places during the night (http://
www.isk.kth.se/~haju/transitability_498789_kebab_0130-0230.png). The
maps could be used for all kinds of interesting things.
The tool is currently only available for the Helsinki region and my
question is, do you think there would be any use for a tool that could
provide this kind of maps by user specification in other cities? If
yes, how do you think I should go forward with it, or if you have any
comments or tips for functionality that you would find interesting?
Also the tool uses the master-branch from graphserver + serialization
from the pull request + transit slack from Andrew. Which branches/
patchsets do you think would be of interest?
Best regards,
Hannes Junnila
Brandon Martin-Anderson
Apr 10, 2011, 2:16:24 PM4/10/11
to graph...@googlegroups.com
Hi Hannes,
This is wonderful work! I would definitely be interested in seeing this extended to more cities.
As far as I'm aware the 1.0.0 tag at graphserver/graphserver is the most stable available, though certainly a number of people have made wonderful contributions that have not yet been folded into the master graphserver branch.
-B
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