Recent Posts

US Bridge Condition Data in Google Earth

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Simon Ilyushchenko writes “I’m starting a blog called “The Days Are Numbered” that will talk about plotting large environment-related datasets. The first entries show 2007 US bridge condition data as collected by Department of Transportation. There are two views: the state percentages of structurally deficient and functionally obsoleted bridges are plotted using just-released Maker application from Fortius GeoCommons. Also, 189,000 out of 716,000 bridges with the lowest rankings are plotted in Google Earth using the regionator script.

Regionator scores data by a user-specified metric and arranges placemarks into KML regions so that only highest-scoring ones are shown at high zoom levels. The placemark size corresponds to the amount of daily traffic, and the color shows the bridge rating. Placemark description provides data about the bridges: names, detailed condition and appraisal ratings, year built, daily traffic and the name of the agency responsible for maintenance. Here’s a sample image.

This might be of interest to people who work with presenting large datasets online, as well as to those who are curious about the condition of their local bridges. Let me know if you have any suggestions on improving the visualization or on ways to make the underlying data available to other tools.”

GlobCover Version 2 Global 300m LULC Released

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An important land use land cover global dataset was released this week, the ESA’s GlobCover Global LC version 2 at a spatial resolution of 300m.

Amongst the highlights: “The GlobCover Land Cover product is the highest resolution (300 meters) Global Land Cover product ever produced.
The GlobCover Land Cover product is based on ENVISAT MERIS data at full resolution from January 2005 to June 2006.
The GlobCover Land Cover product has been developed in partnership with EEA, FAO, GOFC-GOLD, IGBP, JRC and UNEP.
The GlobCover Land Cover product is labelled according to the UN Land Cover Classification System.

Be careful, the product description and some webpages have not been updated yet but should be very soon.

We discussed GlobCover in the past. Our Land Use topic may also be of interest.

Geospatial Solutions Launch a Geo-Wikipedia

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From the Geospatial Solutions web site: “We’re excited to announce the launch of the Geospatial Solutions Wiki — an interactive resource created by the geospatial community. This dynamic encyclopedia comprises information about the people and technologies involved in mapping, remote sensing, location, and geographic information systems (GIS). Whether you’re a student or a professional, a novice or an industry veteran, this is your place to learn and share — what knowledge can you contribute?” See this Geospatial Solutions Wiki home page to contribute: http://wiki.geospatial-solutions.com/

OGC Spatial Data Quality Survey Released

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Vector One provides a followup the OGC survey on spatial data quality, mentioned last year.

The results of the survey can be found here [pdf]. From V1’s entry: “– Smaller companies (less than 20 people) are most keenly interested in data quality, followed by large companies. Medium sized are last.

– Spatial data quality impacts 46% of projects currently with end-user’s feeling most impacted.

– People want consistent results.

– 80% of people store data digitally (but 20% are still on paper).”

IP Addresses Geolocation

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APB links to a Wall Street Journal article on IP addresses geolocation. See also these two previous stories.

From the article: “Still, geolocation technology won’t pinpoint Web visitors’ locations beyond the city level, which won’t satisfy advertisers seeking to target potential customers by neighborhood or street. “That might be the next forefront people might try to push toward,” says Dane Walther, director of custom engineering at Cambridge, Mass.-based Akamai Technologies Inc., which has a geolocation product. “There’s certainly interest from marketers, who always want to get as detailed, as local as they can.”
[…] Marie Alexander, Quova’s chief executive, says one manufacturer told her that it has found a transaction to be fraudulent in 73% of cases where the state in the credit-card billing address doesn’t match the state associated with the IP address. “It’s a huge savings to pull those [transactions] out,” she says.