GIS Cloud Map Editor

GRASS GIS (Geographic Resources Analysis Support System) is a free and open-source Geographic Information System (GIS) software suite utilized for geospatial data management and analysis, image processing, graphics and map production, spatial modeling, and visualization. It supports raster, vector, and geospatial processing, enabling advanced modeling, data management, imagery processing, and time series analysis with a Python API, optimized for large-scale analysis. GRASS GIS is compatible with multiple operating systems, including OS X, Windows, and Linux, and can be accessed through a graphical user interface or integrated with other software such as QGIS. The software includes over 350 modules for rendering maps and images, manipulating raster and vector data, processing multispectral image data, and creating, managing, and storing spatial data. GRASS GIS is widely used in academic and commercial settings, as well as by governmental agencies.

TdhGIS provides a robust and versatile set of tools for vector based spatial analysis. Everything needed to be performing spatial analysis within minutes is included in this easy to use software package. Feature Summary: Graphically create and edit geometric data, as with a CAD program Import Shapefiles and OpenStreetMap data Use raster images as background and a CAD drawing as an overlay Color polygons based on user data values using either discrete intervals or gradients Allocate point data to user specified buffers for points, polygons and multilines (e.g. find all gas stations within 1 mile of a highway) Allocate point data to polygons. (e.g. assign structures to hydrological basins) Allocate polygon data to other polygons. (e.g. allocate population data by census block to political boundaries) Create thiessen polygons (e.g. for all hospitals within a state, define the areas closest to each hospital)