hello there we need to calculate the length of each polygon edge , the polygona could be in irregular shape considering the polygon is 4 edges
if we use chopper or Geometrycoercer transformer we get many edge we are suppose to get only 4
Thanks
Solved
irregular polygon edges length
+11- Contributor
Best answer by geomancer
I can think of an algorithm for this particular polygon, but it will not work for all polygons.
For this polygon I would isolate the 2 longest segments, and combine the other segments if they are connecting to each other.
But this will not work when the two longest segments of your polygon share a vertex, or when the long segments are made up of several shorter segments. So this is by no means a complete solution.
The attached workspace makes use of the custom transformer PolylineAnalyzer from FME Hub. This transformer calculates a lot of other useful information, that may lead to other solutions.
+62- Celebrity
You can use a BoundingBoxReplacer, with the option to use a 2D oriented bounding box. It’ll be rectangular and will generate attributes for the length of the long and short sides (so multiply both by 2 to get the total circumference
If you need to retain the original geometry you can use a GeometryExtractor before and a GeometryReplacer after the BoundingBoxReplacer.
+11- Contributor
if I use the bounding box we will not get the exact value of the edge length for each side
+60- Evangelist
Can you provide some more information?
Of which 4 edges do you want to calculate the length?
Below I sketch 3 different possible definitions, but maybe you want yet another one.
+11- Contributor
Thanks for the your response
the Goal is to extract each 4 line and calculate their length
as its is presented in color
+60- Evangelist
- Best Answer
I can think of an algorithm for this particular polygon, but it will not work for all polygons.
For this polygon I would isolate the 2 longest segments, and combine the other segments if they are connecting to each other.
But this will not work when the two longest segments of your polygon share a vertex, or when the long segments are made up of several shorter segments. So this is by no means a complete solution.
The attached workspace makes use of the custom transformer PolylineAnalyzer from FME Hub. This transformer calculates a lot of other useful information, that may lead to other solutions.
+11- Contributor
I can think of an algorithm for this particular polygon, but it will not work for all polygons.
For this polygon I would isolate the 2 longest segments, and combine the other segments if they are connecting to each other.
But this will not work when the two longest segments of your polygon share a vertex, or when the long segments are made up of several shorter segments. So this is by no means a complete solution.
The attached workspace makes use of the custom transformer PolylineAnalyzer from FME Hub. This transformer calculates a lot of other useful information, that may lead to other solutions.
Very useful
+11- Contributor
if we need to calculate the edge length for the below case what will be your approach
thanks
+60- Evangelist
For this, I would start with isolating the 4 longest line segments, create a new polygon from those segments, and calculate the length of the 4 sides of that polygon.
Like my previous idea I suspect this may not work for all polygons.
