Road Status after the Earthquake in Japan based on OSM – Neis One!

Road Status after the Earthquake in Japan based on OSM – Neis One!
Road Status after the Earthquake in Japan based on OSM
Yesterday, Bing Maps has announced a map for Japan, which shows the
“Road-Status after the Earthquake”
. The information seems to be from Honda (footer: “Status of Roads provided by Honda”).
My first thought: with OpenStreetMap it is possible too!
So here we go: The Geofabrik generates hourly new files for Japan (Sendai region only). It’s available
here
. I have written a small script that only gets the highways out of these files and after that I imported them in a PostGIS/PostgreSQL database. Finally they are available in a Geoserver WMS/WFS.
The processing steps with its time range are:
Download OSM file from the Geofabrik Server: ca. 25sec.
Generate an *.osm file from the *.pbf with Osmosis: ca. 40sec.
Create and import WMS PostGIS table: ca. 25sec.
Overall:
ca. *1min 30sec*
(A cronjob is running every 30min at 20 and 50 on the hour!)
You can use the WMS Layer in your own application
. If you have an OpenLayers client, the following lines of code adds the overlay:
var wms = new OpenLayers.Layer.WMS(
"Road Status Japan (OSM) (impassabel=yes)",
"http://openls.geog.uni-heidelberg.de/geoserver/wms",
{'layers':'osm_japan:roads', transparent: "true", format: "image/png"} );
map.addLayer(wms);
The
layer
has only
two colors
: green and red. The
green
color symbolizes all the roads which can
be used for traffic
. The
red
color symbolizes the roads which have an “impassable=yes”-tag in the OpenStreetMap database and which can
NOT be used for traffic
I put a small example of the overlay with an OpenStreetMap map online here:
You can find further information about OpenStreetMap and the Sendai earthquake/tsunami in the
OpenStreetMap Wiki
. Additional information you can find in the
German OpenStreetMap Blog
I hope this overlay is useful for some people!
If you run into problems or you have questions, do not hesitate to contact me …
thx @ All OpenStreetMap contributors !!1!
thx @ University of Heidelberg for the Web Mapping Service
thx @ Frederik from The Geofabrik for the Japan OSM files
thx @ *Fab*
[Update 1. – March 18th, 2011]
Last nigth I’ve added a second layer with node barriers (barrier=*). You can used it with the following lines of code:
var osm_japan_barriers = new OpenLayers.Layer.WMS(
"Node Barriers Japan (OSM) (barrier=*)",
"http://openls.geog.uni-heidelberg.de/geoserver/wms",
{'layers':'osm_japan:barriers', transparent: "true", format: "image/png"} );
map.addLayer(osm_japan_barriers);
[Update 2. – March 21th, 2011]
I’ve added a third layer with tsunami:damage polygons (key=”tsunami:damage” ; value=”flooded”, “yes”, “scoured”, “flood”, “debris”, “debris_field” or “destroyed”). You can used it with the following lines of code:
var osm_japan_tsunami_damage = new OpenLayers.Layer.WMS(
"Tsunami Damage Japan (OSM) (tsunami:damage)",
"http://openls.geog.uni-heidelberg.de/geoserver/wms",
{'layers':'osm_japan:tsunami_damage', transparent: "true", format: "image/png"} );
map.addLayer(osm_japan_tsunami_damage);
[Update 3. – March 24th, 2011]
You can now find the
Honda Sanriku layer
on the
“Status Map after the Earthquake in Japan”
too (
update daily!
).
Further I have added some Japanese translations and a Bing Aerial layer to the site.
You can use the Honda Layer with the following lines of code:
var honda_sanriku = new OpenLayers.Layer.WMS(
"Honda Sanriku Layer",
"http://openls.geog.uni-heidelberg.de/geoserver/wms",
{'layers':'osm_japan:honda_sanriku', transparent: "true", format: "image/png"} );
map.addLayer(honda_sanriku);
Again, my example site can be found here:
Posted
March 17th, 2011
in
OpenStreetMap
by
Pascal Neis
Tags:
OSM
Overlay
Comments
7 responses to “Road Status after the Earthquake in Japan based on OSM”
andygates
March 17th, 2011
Hi Pascal, great stuff!
I’ve been mapping extensively and using barrier= tags to mark blocked roads on nodes. It’d be great to add those (maybe as red X’s) to this to incorporate more of the mapping information.
pascal
March 18th, 2011
Hi Andygates, thanks for your comment.
Have a look @
I’ve added such a node layer with red X’s 🙂
Shu Higashi
March 22nd, 2011
Thanks for your nice map!
Could you please add Japanese character strings for us Japanese as following?
It would be very useful for us.
Thanks!
Road Status Japan:道路状況
Node Barriers Japan:障害物
Tsunami Damage Japan:津波被害
Legend:凡例
Green:緑
Traffic possible:通行可
Red:赤
Traffic not possible:通行不可
pascal
March 24th, 2011
@Shu Higashi
Thx for noticing! I’ve updated the map with your Japanese character strings …
Christian
March 22nd, 2011
If you use mapcss for the style, there is also the practicability-tag that H.O.T. uses, see here:
The region of Sendai has lots of those. Basically, if you’re just interested in the impassable ways, you can map practicability=no to the same style you use for impassable=yes.
take care,
cmuelle8
ikonor
March 24th, 2011
Hi Pascal,
thanks for the map. I would find a Bing Satellite base layer useful to find still unmapped places.
pascal
March 24th, 2011
@ikonor
thx for your idea! I’ve added a bing aerial layer …