Overlay 1.88: Spatial Overlay Tool for MapInfo Professional
overlay-188.zip is a compact spatial analysis utility created for use within MapInfo Professional. Developed by Bart Adriaanse, the tool simplifies the process of performing overlay operations between two map layers, enabling users to combine geometries and merge their associated attribute data.
Application Details
- File Name: overlay-188.zip (5.21 KB)
- Author: Bart Adriaanse
- Version: 1.88
- Created: November 5, 1999
- Modified: November 5, 1999
- Supported GIS Platform: MapInfo Professional
- Operating System Support: Windows
- Source Code: MapBasic included
Originally updated for MapInfo 4.0 and posted in March 1997, this utility remains a practical extension for spatial data processing tasks.
Core Functionality
Overlay 1.88 provides a streamlined method for executing spatial overlay operations similar to those found in ArcInfo environments. The tool supports:
- Point-in-polygon overlay
- Line-in-polygon overlays
- Polygon-in-polygon overlays
When two layers are processed, the utility identifies spatial relationships and produces output that combines geometry interactions with merged attribute information. This enables users to enrich features with data from intersecting layers without manual spatial queries.
How It Works
- Two map layers are selected for processing
- The tool evaluates spatial relationships between features
- Overlapping geometries are calculated.
- Related attribute data from both layers are merged into the resulting dataset.
The process reduces the need for multiple query steps and simplifies complex spatial data integration.
Practical Applications
Overlay operations are fundamental in GIS analysis. Typical use cases include:
- Assigning administrative boundaries to point locations
- Determining which land parcels intersect infrastructure lines
- Combining zoning polygons with demographic data
- Environmental impact assessment workflows
By automating overlay analysis, Overlay 1.88 increases efficiency and reduces the potential for manual processing errors.
Source Code Availability
The inclusion of MapBasic source code makes the utility especially valuable for GIS developers. Users can review, modify, or extend the tool to integrate with custom workflows or enterprise GIS environments.
Download Information
- Archive Name: overlay-188.zip
- File Size: 5.21 KB
After downloading, extract the archive and follow any provided instructions for installation within MapInfo Professional.
Overlay 1.88 offers a straightforward and effective solution for performing spatial overlay analysis and attribute merging within MapInfo-based GIS projects.
