A subset is a section of a larger downloaded image. Since satellite data downloads usually cover more area than you are interested in and near 1 GB in size, you can select a portion of the larger image to work with. for example, A typical Landsat scene covers…

QGIS (Quantum GIS) is a free and open-source geographic information system (GIS) software that allows users to create, edit, visualize, analyze, and publish geospatial information. It is widely used for various applications such as mapping, spatial analysis…

Spectral indices are combinations of the pixel values from two or more spectral bands in a multispectral image. Spectral indices are designed to highlight pixels showing the relative abundance or lack of a land-cover type of interest in an image. Vegetation…

Contour generation typically refers to the process of creating contour lines or contour maps, which are used in cartography and geographic information systems (GIS) to represent the topography of an area. Contour lines are lines that connect points of equal…

Sentinel-2 is an Earth observation mission from the Copernicus Programme that acquires optical imagery at high spatial resolution (10 m to 60 m) over land and coastal waters. The mission's Sentinel-2A and Sentinel-2B satellites are to be joined in orbit in…

Cadmapper is a website that provides a service for converting geographic data (such as GIS and satellite imagery) into CAD files. It allows users to download CAD files of cities, regions, and countries, which can be useful for architectural and urban planning…

An earthquake is the shaking of the surface of the Earth resulting from a sudden release of energy in the Earth's lithosphere that creates seismic waves. The USGS monitors and reports on earthquakes assesses earthquake impacts and hazards, and conducts targeted…

Change detection is a process used in various fields, such as computer vision, remote sensing, and software development, to identify differences between two or more datasets over time. In the context of animation, change detection can refer to the ability…

Geofabrik is a well-known provider of OpenStreetMap (OSM) data. Their website offers various services, including downloadable extracts of OSM data for different regions around the world. Users can access map data in multiple formats suitable for GIS applications…