GIS basics-vendor introduction (2) ESRI

US Institute of Environmental SystemsErsl ( Enveronmentalsystems researchinstitute , Abbreviated ESRL ), Ersl The company's market share has been dominant for many years GIS First in the industry. ESRI Exclusive Company 1995 World GIS 1/3 of the software market share, which has been stable for several years GIS The largest market share. 1991 Year, ESRI Workstation ARC/INFO The 6 The Chinese version made its products the first to enter the Chinese market.ErslThe GIS software is also the most widely used in the world.GISSoftware.

ArcGISIt provides powerful functions for automatic input, processing, analysis, and display of geographic data. It has been successfully applied to one hundred of the nine categories including natural resource management, Automatic Plotting, facility management, urban and regional planning, population and business management, transportation, oil and natural gas, education, and military multiple Fields. Its main features are:

UUse the geographic relationship data model;

UProvides strong spatial operations and analysis functions;

UIt adopts modular structure, which is flexible and easy to expand;

U provides macro command languages and menus, supporting secondary development.

U available 38 Map Projection Method, coordinate Transformation between different projections

UAbility to store and manage large data volumes;

UOpen Architecture, providing interfaces for direct connection to multiple databases;

U has good compatibility, 25 data formats of different systems are converted to each other.

UIt is independent of hardware and supports the widest range of hardware platforms;

UProvides convenient user interface capabilities, allowing you to callProgramExternal applications and operating system resources;

Supports various industrial standards today, including operating systems, graphic user interfaces, commercial databases, network protocol standards, spatial data interchange formats, and graphic output formats.

Company Website: http://www.esri.com/