| Basics of Coordinate Metrology Unit 4: Geometric Elements - Point (in space) |
Step 8 of 11 |
The most
difficult geometric element is the point. A point is distinguished by
the following characteristics:
It is described by three coordinates (x,y,z). These three coordinates are also called local vector . A local vector or briefly vector is an arrow pointing from the origin of the coordinate system (zero point) to the point P (x,y,z). The local vector is defined by the number triple (x,y,z) of the coordinates of the point P. Tip: In practice it is very difficult to measure a point directly by probing it once. A much more stable solution (in particular with respect to measuring uncertainty) is to calculate a point as an intersection of other standard geometric elements. |
Element: |
|||||
|
Display:
|
||||||
|
Parameter: local vector P (x, y, z) |
||||||
|
Required minimum number of probing points: 1 probing point |
||||||
