GDMS can help you leverage the spatial information already within your company's databases through intelligent use of geographic data and geocoding. GDMS is your resource for data in your GIS applications and is a value-added reseller for:
Dynamap/2000
Los Angeles County Assessor's Data Orange County Assessor's Data 
aerial imagery For more information, please contact GDMS at 661.949.1025 or
E-mail: gdms@gdms-1.com
GDT's Dynamap/2000
GDT's Dynamap/2000 database contains more than 14 million addressed street segments along with postal and census boundaries, landmarks, and water features. To ensure accuracy and up-to-date completeness, GDT incorporates more than one million changes every quarter. New streets, renamed highways, ZIP code revisions and other changes occurring in our nation's dynamic landscape are updated quarterly. GDT uses a number of quality control techniques, including raster imagery, to verify new roads and improve the spatial accuracy of the data. As a result, customers consistently credit GDT with the highest nationwide geocoding rates in the industry. Dynamap/2000 provides an excellent tool for customers with routing applications. GDT corrects inconsistent road attributes inherited from TIGER, standardizes road names, and provides several alternate names to ensure that all segments connect along the road network. All roads in Dynamap/2000 sew across counties nationwide. With Dynamap/2000, users can find optimal routes and directions to help save time and money in service and delivery. Dynamap/2000 enhancements help orient map users and heighten the visual quality of maps. The database identifies more than 30 types of landmarks organized in logical themed layers, including railroads, airports, parks, recreational areas, transportation terminals, institutions (such as schools and hospitals), major retail centers, and water features. Dynamap/2000 provides clean, straightened lines, curvy roads, cloverleaf ramps, and streets that line up perfectly across county lines to reflect real-world road conditions. Dynamap/2000 also includes improved Census boundaries and the highest quality ZIP code boundaries available in the marketplace. Available in quarterly, semi-annual, and annual releases. Custom services and technical support are also available.
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Los Angeles County Assessor's Data
Over 2.3 Million parcels exist today in Los Angeles County. These parcels, which are numbered individually
to uniquely identify and track their historical evolution, cover an area of over 4,080 square miles, including 88
cities and numerous unincorporated communities. Using GIS READY map base data means accuracy,
versatility and compatibility!
- This GIS READY map base is the standard for parcel level data in both the government and private
sectors.- Various recorded boundaries that define the Assessor's parcels with the Assessor's unique Identification Number, street names, recorded subdivision information, and recorded easements can be provided.
- Current parcel boundaries are accurate within plus or minus two feet over a half mile square grid.
- One map base for the entire county allows large areas or specific parcels to be examined.
- Layered data allows the creation of customized maps for specific needs.
GIS READY data can be used with any GIS or CADD software.
Specifications:
- Traversed or COGO data.
- Based on California's state plane coordinate system.
- Created using ESRI's ARCINFO and Computervision's CADDs 4X. Linework can be provided in these formats or in DXF.
- Attribute data can be provided in ASCII format.
Orange County Assessor's Data
GDMS is now authorized to offer parcel data for Orange County. Parcel data may be purchased as a perpetual license (one-time purchase) or as an annual license (five-year commitment).
AirPhotoUSA provides the highest quality, seamless digital aerial photography available in the marketplace today.
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AirPhotoUSA has now become the industry leader in providing current, true color, high resolution, seamless digital ortho-rectified aerial photography to real estate professionals, transportation agencies, planning officials, GIS professionals, engineering and environmental consultants, state and local municipalities, and virtually anyone who needs high quality imagery at the best possible price. AirPhotoUSA's, award winning interface, PhotoMapper™ allows the user to manipulate thousands of square miles of high resolution imagery (many gigabytes of aerial information) in real-time on a very low-end computer system. PhotoMapper, is fast, efficient and very easy to implement. With virtually no training, an average windows user is producing awesome aerial information in just a few minutes.
AirPhotoUSA has assembled the largest database of seamless, digital aerial photography the USA. In addition, AirPhotoUSA has bundled valuable information as "layers" within the PhotoMapper and increased the resolution of the imagery
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