what is common GIS method?

Question

I want to know what is the main methods that used in GIS to connect between the location and their information (spatial access methodes) SAM.

I read in some web sites two methods are:

vector raster

is that methods related what I want???

thank you ^_^

Answer 1

I think what you are thinking of is the WKT Geometry column.

In a data table where each row has one corresponding feature (point, line, segment, polygon,etc), there is usually a hidden GEOMETRY column, which consists of Well-Known Text (WKT) or Well-Known Binary (WKB). Polygons and lines are represented by all their vertex coordinates. See https://en.wikipedia.org/wiki/Well-known_text_representation_of_geometry.

Answer 2

there are indeed in general two types of GIS datasources: Vector and Raster.

With vector; the attribute data can be stored in several ways: - Side by side in a spatial database - In a vector file paired with an attribute file (ESRI shape with ESRI dbf) - Connected in an application (f.i. in MapInfo; connecting points to an excel sheet based upon a common attribute)

With raster; all you have is the numeric value of a pixel.

Answer 3

The process of connecting data to geo-spatial coordinates is called Geocoding.

Other common methods use simple coordinates (Lat/Long or GPS).

Vector/Raster refers to the two main types of graphical data that a GIS might use to render a map.