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4 items tagged "Street and Open"

Related tags: Map [+], View, Source

Mapperz - The Mapping News Blog

Google MapMaker Coverage Expands (but..)

Posted: August 16th, 2008, 1:00am CEST

Tags: Open Street Map

Google MapMaker Coverage Expands Google want 'users' to add content to areas that have poor or limited digital mapping coverage. Please remember the content you generate will become Google's...

Map and GIS News finding blog. With so many Maps and GIS sites online now it is hard to find the good from the not so good. This blog tries to cut the cream and provide you with the newest, fastest, cleanest and most user friendly maps that are available online. News has location and it is mapped.
State of the Map 2008 : Presentations - Open Street Map

Posted: July 28th, 2008, 5:38pm CEST

Tags: Open Street Map

State of the Map 2008's July 12th-13th Castletroy, Limerick has now got presentations available for people that could not attend the event. These include: OSM Cycle Map - See how much coverage...

Map and GIS News finding blog. With so many Maps and GIS sites online now it is hard to find the good from the not so good. This blog tries to cut the cream and provide you with the newest, fastest, cleanest and most user friendly maps that are available online. News has location and it is mapped.
OpenStreetMap Data in GlobalMapper - Fast!

Posted: April 30th, 2008, 6:32pm CEST by Mapperz

Tags: Open Street Map

OpenStreetMap in Global Mapper 9.0.3 - Fast! OpenStreetMap Data (.osm) can now be loaded directly into GlobalMapper. Global Mapper has had an update (now GlobalMapper v9.0.3) You would think...

Map and GIS News finding blog. With so many Maps and GIS sites online now it is hard to find the good from the not so good. This blog tries to cut the cream and provide you with the newest, fastest, cleanest and most user friendly maps that are available online. News has location and it is mapped.
TIGER,TIGER OpenStreetMap

Posted: February 18th, 2008, 4:30pm CET by Mapperz

Tags: Open Street Map

TIGER, TIGER in OpenStreetMap

Well ahead of schedule TIGER data (USA) has been successfully imported to OpenStreetMap

Clean, attributed data in OpenStreetMap

"OpenStreetMap (OSM) has completed the bulk import of comprehensive street and highway data for the United States, months ahead of the project's original estimates. The massive data set originated with the US Census Bureau's public domain map database, and importing it required a dedicated upload process running around the clock since August 2007. The imported data will still require human editing and error-correction, but the completed task is a major milestone for the OSM project."

How was this done so fast?
Once happy with the results, the project began importing the data into the main OSM system using three dedicated daemons running concurrently. Requiring all of the imported data to go through the OSM server's API just like manually collected GPS trace data meant it was a time-consuming process, but it was safer than attempting to bypass the API and alter the database directly.

Quadtiles to the rescue...
At the beginning of the process, the predicted completion date hovered between late May and early June 2008. Luckily, admin Tom Hughes found a way to re-index the database using quadtiles, resulting in greatly shortened database lookup times.

"Quadtiles recursively split each quadrant of the map into four sub-quadrants, allowing for better space efficiency by only subdividing those quadrants that require more detail -- a quadrant containing only ocean and therefore no roads, for example, would not require subdivision, whereas a metropolitan city center would."

Community Help
Now the real work begins, and you can help
The TIGER data set covers 6% of the Earth's surface. Its successful import does not mean that the work is finished. Users who have collected their own GPS logs in areas covered by the TIGER maps and uploaded the resulting data report sporadic problems with TIGER's information. Problems include misalignment of roads, missing features (including the regular absence of on-ramps and access roads, and representation of divided highways as a single road), and occasional confusion on features such as cul-de-sacs. Since the TIGER map data was produced from aerial photography, and was originally intended to assist Census Bureau officials in the field, such problems are bound to occur and are unlikely to have undergone official correction.

History
"OSM has performed one other bulk data import. In July 2007, AND Automotive Navigation Data donated a comprehensive road map of the Netherlands and highway system maps of India and China. The Netherlands import was completed last fall, but the data for the India and China import has yet to be released to the project.

Future
Although other prospects for large-scale map donations have been discussed, none are on the horizon. The addition of the AND and TIGER information gives the OSM project a helpful boost, but the bulk of the future work remains in the hands of individual users, each contributing their input toward the whole."

Some Random Places
Mountain View, Santa Clara
http://www.openstreetmap.org/?lat=37.3873&lon=-122.0877
&zoom=12&layers=B0FT

Seattle
http://www.openstreetmap.org/?lat=47.60933&lon=-122.33515
&zoom=15&layers=B0FT

Orlando
http://www.openstreetmap.org/?lat=28.6276&lon=-81.3724
&zoom=12&layers=B0FT

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