Is it possible to split lines into parts and give a minimal distance for the parts to be split?
I have a layer with rivers, some of them are one object, even if they are hundreds of kilometers away from each other. How can I split them into dedicated lines?
If I use the tool parts-to-single, the lines will be split into small segments. I want to say: split if the parts are >50km away from other parts, to get single, but complete lines for each river.
Starting data :
rivers layer with a unique identifier river_id to identify each objects, each grouped segments of riversProcessing :
Do a buffer on rivers, not dissolved, with a distance of 50 km / 2 so 25 km. If you want strictly >, you can do a buffer of 24.9999 km
Your buffer_25km has a river_id, so dissolve this layer and select as Dissolve field river_id.
Apply on the new buffer_25km_dissolved a Multipart to Singleparts
Create an unique field on the single_buffer_25km_dissolved to identify each patch buffer_id updated with $id
Apply on rivers a Multipart to Singleparts
Create a new field (integer) on single_rivers and retrieve the buffer_id data into this field by location or overlap_within( expression
Dissolve single_rivers and select as Dissolve field river_id and buffer_id
