tailieunhanh - KEY CONCEPTS & TECHNIQUES IN GIS Part 9

Nhóm đầu tiên của GIScientists gặp phải vấn đề đó đã được các chuyên gia viễn thám, và vì vậy nó là không có gì ngạc nhiên khi họ là những người đầu tiên để "khám phá" các mạng thần kinh như là một giải pháp có thể. | 92 KEY CONCEPTS AND TECHNIQUES IN GIS Object view Represents the features as discrete objects with well-define boundaries in an empty space Ontology Formal specification of the meaning of a datum Overlay Quintessential GIS operation that determines spatial coincidences PDF Portable document format - an open file format for the description of deviceindependent documents Pedologist One who studies soil science Precision The amount of detail that can be discerned in geographic information Projection See Map projection Raster Spatial organization of data similar to an array or a spreadsheet space is completely filled by the cells that make up the raster Regional science Academic discipline at the intersection of economics and geography that developed its own set of spatial analysis techniques Remote sensing The technique and science behind gathering information from objects without touching them Scanning An automated form of digitizing that results in raster data Semantics The meaning of a datum Shape measures Set of statistical measures to describe spatial configurations originally developed in landscape ecology Spatial reference Descriptor for a location on Earth SQL Structured query language - a standard with many variations way of querying a database GLOSSARY 93 SVG Scalable vector graphics - an XML dialect for the description of vector data Thiessen polygon For a point dataset the area around one point that is closer to this point than to any other point TIFF Tagged image file format - an error-free storage format for raster data TIN Triangulated irregular network - a representation of a surface derived from irregularly spaced sample points Topology Branch of mathematics that deals with qualitative spatial relations. Topological relationships are important for many GIS operations and have been used as a check for the geometric consistency of a GIS database UML Unified modeling language - an ISO standard for the specification of database schemas Unix Family of .