When I am using join curves to try to combine lines with some certain geometric relationships, it did not work very well. I tried flatten the input lines, but it didn’t give me any change.
After I applied center of polygon, it shows a couple of points. But All I need is one point of the whole geometry.
Hi, your polyline curve needs to be closed in order to get the centroid of the shape. I have used Pufferfish plugin’s Close Curve component to close the curve and then find centroid.
And that is not my final purpose, I want to use this close curve as pattern geometry, and move the pattern to the points below (scale up and down a bit to make it like a pattern).