+4Dear FME community,
I have a featureklass of lines. I want to find the start and end point of the lines. I used the Snipper transformers, setup as the screen shot below. '0' is the first vertex, '-1' is the ending vertex but the start and end points which I created , don not lie along the line. I also used coordintateExtractor,, it gave me the same result. I couldn’t figure out what went wrong.
I would appreciate any help to solve this problem.
You lines might be collections / aggregates. You can check this using the AggregateFilter.
+4I checked it, the lines are not aggregates. I have 3000 lines, I get 3000 start points and 3000 end points but location of the startpoint and end point donot fit with the line
Weird. Can you provide a sample of a line where this happens? A zipped .ffs file with the line without attributes? Takes a Sampler to get one feature, an AttributeKeeper to strip all attributes and a FeatureWriter to write to ffs.
+5
I did this once as well, used a similar approach as you did, but I did not extract all coordinates, but used a ‘specify coordinate’ extraction. This way I did not use a ListIndexer, because it is in separate transformers. Might work for your case as well
+4Thank you for your replay. My idee is to label start and end point of the line. Stlil the vertex I am making does start and end at lines( see the printScren).
+47Instead of the Snipper try 2 CoordinateExtractor (parallel) to get the coordinates of a specified point as attributes (index 0 is the first point, -1 is the last point) and then a VertexCreator to replace the line with a point taken from those attributes
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