Can somebody help me , How to change complex chain line string to line string?
Sorry, you question cannot be answered, because you provided zero information :-(
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And where are required information? What product, version, language do you use?
Also, what does it mean "complex chain line string"? Can you attach some example? Complex chain is a group of chained (but gaps may exist) linear elements, whereas line string is one element. So do you mean a complex chain element with exactly one line string inside?
you can just 'drop' the complex chain
@Lucy East! Small world! I am adding utilities to a drainage sdb file and unfortunately the "Create Utilities" tool in Select Series 10 does not allow adding complex chains. So basically, long utilities defined by complex chains are broken up at the vertices, so for one water line, there will be a separate utility for each segment. It's tedious to add each segment separately. However, if we can convert the complex chain to a line string then this issue would be resolved. The utilities tool allows adding utilities with multiple vertices when selecting a line string. The "Drop Element" tool breaks up the complex chain into separate line strings, which would be ok if there was a way to join them. Create complex chain will not work for this case.