[postgis-users] PostGIS Usage Survey
khorton at imagelinks.com
Tue Feb 4 07:35:29 PST 2003
> - Name of the organization
ImageLinks, Inc. (www.imagelinks.com)
> - Data being managed in the database
On line Active Archive of Imagery (Satellite, Arial), Maps (DRGs), and
> - How the data is being accessed / manipulated
Data is staged using C++/libpq++. Each record contains image meta data
(datum, type, bands, acquistion date,etc).
Image vertices are used to create a POLYGON geometry.
End users queries for data are based on an Area of Interest (AOI). AOI
is established via web interface
using a map interface (OpenMap), Lat-Lon, or UTM.
Available data within the AOI is determined using PostGIS queries from PHP.
Experimentation is currently in progress using shape files.
> - Why you chose to use PostGIS for the application
Open Source, OpenGIS functionality.
PostGIS geometry overlap functions are expecially useful for imagery
that are not rectangular (i.e. Landsat footprint, hyperspectral scenes).
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