Hi
I have a polygon with name A and some points around with names A, B , C, D
I would like to calculate the distance between the centerpoint of polygon and the point with the same name of polygon (distance polygon A point A)
Thx
Francesco
This post is closed to further activity.
It may be an old question, an answered question, an implemented idea, or a notification-only post.
Please check post dates before relying on any information in a question or answer.
For follow-up or related questions, please post a new question or idea.
If there is a genuine update to be made, please contact us and request that the post is reopened.
It may be an old question, an answered question, an implemented idea, or a notification-only post.
Please check post dates before relying on any information in a question or answer.
For follow-up or related questions, please post a new question or idea.
If there is a genuine update to be made, please contact us and request that the post is reopened.
+22- Contributor
- 2179 replies
Replace the polygon with the center point (CenterPointReplacer).
Then use the NeighborFinder (group by name) to find the closest point (candidate) to the centerpoint (base).
This will add an attribute _distance, with the requested distance.
+15- Contributor
- 2252 replies
@frsisani
Or extract centerpoint (CenterPointReplacer)
FeatureMerge unconditionaly (req = 1 and sup = 1) to points.
Create lines Vertex replace with centerpoint and Vertex add with points.
Function @Length() holds the distance (can ber accesed via Aritmetic Editor in all transformer that provide acces to this editor, for instance tester or Attributecreator).
- 7843 replies
Alternatively, this procedure is also possible. This is a way to calculate distance literally using attributes.
- CenterPointExtractor: Extract coordinates (x0, y0) of center point from each polygon.
- CoordinatExtractor: Extract coordinates (x1, y1) from each point.
- FeatureMerger: Merge (x1, y1) to polygon feature using their name (A, B, C ...) as Join On.
- ExpressionEvaluator: Calculate the distance between (x0, y0) and (x1, y1) with this math expression. The AttributeCreator or the AttributeManager can also be used here.
@hypot((@Value(x1)-@Value(x0)),(@Value(y1)-@Value(y0)))