GISCTSL - GIS CONCEPTS AND TERMINOLOGY Maps are graphic...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
GIS CONCEPTS AND TERMINOLOGY Maps are graphic representations of the real world. Only a general representation because we all know that the real world is too detailed to be replicated. Real world comprised of objects (real and man-made). Maps comprised of features that represent real world objects. Features comprised of attributes (i.e. feature = river; attribute = name, length, avg. depth) Features – a map representation of a geographic object (church, school, river, lake, forest) Each map feature has a location, shape, symbol 1) Locations – map representation of where a particular object is in relation to other objects (because earth is sphere and maps are flat, there is always distortion of location of features on maps – discuss later – projections) 2) Shape – visible form of a geographic object. In arcview, shape is the the technical name for a map feature, stored in a shapefile format. (maps use 3 basic shapes to represent real world objects (points, lines, polygons)
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 2

GISCTSL - GIS CONCEPTS AND TERMINOLOGY Maps are graphic...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online