A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

An extent is the minimum bounding box/rectangle (xmin, ymin and xmax, ymax) defined by coordinate pairs of a data source. All coordinates for the data source fall within this boundary.
720 questions
Area is a quantity that expresses the extent of a two-dimensional surface or shape, or planar lamina, in the plane.
Google's virtual globe application that allows users to view 3D buildings, imagery, terrain, any other information stored in KML files.
The vertical distance of a point or object above or below a reference surface or datum (generally mean sea level).
Performance concerns how effectively a computing system uses resources.
702 questions
A Styled Layer Descriptor (SLD) is an XML schema specified by the Open Geospatial Consortium (OGC) for describing the appearance of map layers.
700 questions
GeoTools is an open source Java library that provides tools for geospatial data.
699 questions
An extension to ArcGIS for Desktop and Server which adds functionality for analyzing networked data, particularly for road and transport networks.
695 questions
Version 2.7 of the Python programming language
693 questions
A Geospatial Data Abstraction Library (GDAL) image mosaicing, reprojection, and warping utility.
Questions related to GIS objects that have three dimensions.
678 questions
SpatiaLite is a spatial extension to SQLite, providing vector geodatabase functionality.
660 questions
open source Python library for reading and writing geospatial raster data
Esri geodatabase is a database schema designed by ESRI for managing feature classes, versioning, topology, networks, terrains and other Esri application specific storage requirements.
659 questions
The process of sorting or arranging entities into groups or categories; on a map, the process of representing members of a group by the same symbol, usually defined in a legend.
657 questions
when ArcGIS 9.3 is the version you are using from the ArcGIS platform.
652 questions
Normalized Difference Vegetation Index is used to quickly identify vegetation and its condition in remotely-sensed data.
For questions about ArcGIS Python Parser for labelling expressions and field calculations
649 questions
A command used to retrieve information from a database
647 questions
The field of study concerning statistical methods that use space and spatial relationships (such as distance, area, volume, length, height, orientation, centrality and/or other spatial characteristics…
An application of QGIS used to develop models utilizing a large variety of powerful Geoprocessing tools via a GUI.
when ArcGIS 10.4 is the version you are using from the ArcGIS platform.
607 questions
Ubuntu is a computer operating system based on the Debian Linux distribution and distributed as free and open source software, using its own desktop environment.
604 questions
Questions about data from the Moderate-Resolution Imaging Spectroradiometer sensors aboard the Terra and Aqua satellites.
NetCDF (Network Common Data Form) is a set of software libraries and self-describing, machine-independent data formats that support the creation, access, and sharing of array-oriented scientific data.
To select data records according to logical criteria applied to their field values ("attributes")
595 questions
SAGA (System for Automated Geoscientific Analyses) is a GIS toolbox with many modules that can be used from the GUI, command line or accessed through R,python or directly using C++.
593 questions
A series of Earth-observing satellite missions jointly managed by NASA and the U.S. Geological Survey.
Excel is a spreadsheet application from Microsoft with native *.xls and *.xlsx formats.
To show, hide, extract, or remove particular data from a larger set, narrowing it down, or the specific criteria used to do so.
581 questions
consist of finding optimal paths along geographic networks such as roads or trail systems.
A mathematical procedure used to solve problems with a series of steps. Algorithms are usually encoded as a sequence of computer commands.
Software for which the original source code is made freely available and may be redistributed with or without modification.
541 questions
WGS 84 (that spelling) is the name of an ellipsoid (EPSG::7030), the name of a geodetic coordinate reference system (EPSG::4326), and the alias of a datum (EPSG::6326), official name World Geodetic Sy…
536 questions
An application programming interface specific to Google Maps.
534 questions
A library for performing conversions between cartographic projections.
533 questions
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