Vector data

Vector data is data with a one-dimensional domain-unit, with at least one feature-attribute and optionally other attributes for the same domain unit.

The feature attribute refers to the coordinates of the vectors.

The GeoDMS supports the following vector types:

• point: point data, the feature attribute refers to one coordinate per entry.
• arc: arc data, the feature attribute refers to at least two coordinates per entry.
• polygon: polygon data, the feature attribute refers to at least three coordinates per entry.

It is important to know the coordinate-system of your vector data, as they may effect the results of functions like arc_length and connect_info.

vector sources

Vector data in GeoDMS applications is read from (and can also be written to some of) the following formats:

• esri-shapefile (point, arc, polygon)
• geopackage (point, arc, polygon)
• ascii-files : csv (point) and xml (point, arc, polygon)
• filegeodatabase (point, arc, polygon)
• postgis (point, arc, polygon)
• XML/GML(point, arc, polygon)
• fss files (point, arc, polygon)

vector calculations

The GeoDMS contains multiple functions to calculate with the vector coordinates, see mainly the geometric-functions