TdhGIS

TdhGIS is a powerful software package designed for vector-based spatial analysis, available at no cost for non-commercial use on MS Windows and Linux systems.
The application provides a diverse range of tools that enable users to perform spatial analysis efficiently. Key functionalities include:

- Create and Edit Geometric Data: Users can easily create and modify geometric shapes and features.
- Import Shapefiles and OpenStreetMap Data: TdhGIS supports the import of various data formats, allowing for extensive data manipulation.
- Use Raster Images as Backgrounds: Users can overlay raster images to enhance their spatial analysis.
- Allocate Point Data to Buffers and Polygons: This feature allows for better data categorization and analysis based on spatial relationships.
- Create Thiessen Polygons and Data Contours: Users can define areas based on proximity, which is essential for spatial planning and analysis.
- Calculate Area and Perimeter of Irregular Polygons: TdhGIS includes tools for precise measurement of geometric properties.

All data is stored in an SQLite database, enabling further manipulation and complex queries. Additionally, TdhGIS functions as a capable viewer and editor for Shapefiles, making it a versatile tool for professionals in the field of geographic information systems (GIS).

For those interested in customizing the software, TdhGIS also offers options for software customization to fit specific user needs.