GIS mapping data can mean different things to different people and DDG can help and advise on these matters. The data required for use in a typical desktop GIS mapping may include; base mapping at different scales, aerial imagery, overlay data such as postcode boundaries or census data or client specific data relevant to the project.

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Data is not always available in its most suitable format and may require conversion into a more suitable or useable format for GIS use. This may include capture from paper maps into an accurate GIS database, or conversion from other GIS formats such as AutoCAD, DGN, GPS data or MapInfo etc. Using our expert team of GIS consultants and extensive proven experience, DDG is able to offer a full range of data capture and conversion services at internationally competitive prices, such as:

• Scanning of large paper maps
• Conversion from image files to geo-referenced imagery
• Conversion of one vector format to another
• Conversion from one coordinate system to another
• Vector to raster or raster to vector conversion
• Data capture of features from existing resources, both textural and spatial
• Geocoding to convert street addresses into spatial locations

The design of the appropriate GIS database is a critical element of an overall successful GIS strategy and requires a a suitable data model to efficiently store, query and manage the geographical or spatial data. DDG can consult, advise, design and create the GIS database which best matches the size and nature of the client requirement. This element of GIS is often inextricably linked to the data capture and conversion elements and our GIS specialists can design and implement a GIS database architecture for use with:

• ArcGIS shapefile
• ArcGIS personal and file geodatabases
• Oracle and SQL Server via ArcSDE technology
• Open Source database such as MySQL,Spatial Lite and PostgreSQL

• Ability to save cost because customers do not need to maintain and invest on particular software for database standardization
• Data is updated frequently following requirements
• Get support to build special tools to customize database following customer’s purposes