# Differences

This shows you the differences between two versions of the page.

Both sides previous revision Previous revision | |||

wiki:documentation:devguide:geometry_module [2016/01/20 10:22] gribeiro [LinearRing] |
wiki:documentation:devguide:geometry_module [2016/02/12 10:36] (current) gribeiro [General Concepts] |
||
---|---|---|---|

Line 14: | Line 14: | ||

* A 1-dimensional geometry is one with a geometric dimension of 1 (one). Curves (lines) are 1-dimensional objects. | * A 1-dimensional geometry is one with a geometric dimension of 1 (one). Curves (lines) are 1-dimensional objects. | ||

* A 2-dimensional geometry is one with a geometric dimension of 2 (two). Surfaces (polygons) are 2-dimensional objects. | * A 2-dimensional geometry is one with a geometric dimension of 2 (two). Surfaces (polygons) are 2-dimensional objects. | ||

- | * We can have geometries in ℜ2, ℜ3 or ℜ4 coordinate spaces. | + | * We can have geometries in ℜ<sup>2</sup>, ℜ<sup>3</sup> or ℜ<sup>4</sup> coordinate spaces. |

* The //z// coordinate value not necessarely represents altitude. | * The //z// coordinate value not necessarely represents altitude. | ||

* The //m// coordinate value represents arbitrary measurement. | * The //m// coordinate value represents arbitrary measurement. | ||

* The term //ring// is applied to a closed curve (the first and last points are coincident). | * The term //ring// is applied to a closed curve (the first and last points are coincident). | ||

- | |||

===== Geometry Class Hierarchy ===== | ===== Geometry Class Hierarchy ===== | ||