Hi, I have 2 lines and they have real elevation value (z value). I want to add lines which exaclty middle of 2 lines. Also the new line should has actual z value . ( average z of 2 lines). How can I do?
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center line
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Best answer by evieatsafe
Hi @bayram thanks for your question! From your description my understanding is that you would like this new line to have the same vertices as the other two lines but with z values elevation) that are between them as a vertical center line? There might be a couple of ways to achieve this, but here's one:
- exposing the vertices coordinates of each line (CoordinateExtractor & ListExploder)
- join on list indices, with z value attributes having two different names (FeatureMerger/FeatureJoiner)
- calculating the middle value (difference/2)+z (AttributeCreator/AttributeManager/ExpressionEvaluator)
- replace the lines with points using the new z values (VertexCreator)
- rebuilding the line, but make sure it is sorted correctly first (LineBuilder)
Hope this helps, or provides you with some ideas!
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- Best Answer
Hi @bayram thanks for your question! From your description my understanding is that you would like this new line to have the same vertices as the other two lines but with z values elevation) that are between them as a vertical center line? There might be a couple of ways to achieve this, but here's one:
- exposing the vertices coordinates of each line (CoordinateExtractor & ListExploder)
- join on list indices, with z value attributes having two different names (FeatureMerger/FeatureJoiner)
- calculating the middle value (difference/2)+z (AttributeCreator/AttributeManager/ExpressionEvaluator)
- replace the lines with points using the new z values (VertexCreator)
- rebuilding the line, but make sure it is sorted correctly first (LineBuilder)
Hope this helps, or provides you with some ideas!