Conversion of Existing Data to GIS Data Formats (Especially for GATE-Geospatial 2022)

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Data conversion is defined as a mechanism for converting GIS data from one format to another. It can be easy or difficult. It depends upon the specialty of the data formats

  • Proprietary data formats require special translators for data conversion
  • Whereas neutral or public formats require a GIS package that has translators to work with the formats

To leverage the investment in legacy systems such as CAD, companies will need to undergo massive conversion projects to spatially enable their existing data collections. ISSI analysts have extensive experience in data conversion and have developed routines to convert CAD based data to more functional GIS data structures.

Data conversion is the process of transforming graphic and non-graphic analog sources into a computer-readable format through data input and/or transforming existing spatial digital data into a format that can be used by a Geographic Information System (GIS) . This fact sheet refers to only the conversion of existing digital data.

This Diagram Shows Data Sources and the Users Are Linked by …

As shown in figure, the data sources (maps and records) and the users are linked by tasks. Data sources are composed of hand base and facilities information. The GIS operates between the user and the data access sources. Converted data are loaded into the GIS. The GIS provides data access functions to the user. These functions create data requests to the GIS, resulting in information being returned to the users. In most cases, the link between the users and the data source is replaced by direct interaction between GIS and user.

General Format of Data for GIS

Generally, data for GIS are a combination of land base features and attribute, appropriate facility features and attributes, and other types of data such as natural resources or demographic detail. Land base features are typically right of way, edge of pavement, hydrography, parcels, and other spatially oriented items of interest.

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