Extract line segments between two points

@jeroenstiers I haven't been able to get the point on line overlayer to work correctly. I'm not sure what I'm missing.

If each line can be spatially related to just 2 points (start point and end point belonging to the same section), this data flow might work.

Because the PointOnLineOverlayer doesn't snap the end nodes of split lines to the input points, the output lines and points may not construct a network topology.

Hi mkov,

I found a method that works for 2 points and 1 road. So it should work for the road with ID 2 and also for one segment for the road with ID 1.

I tried this using created a sample. Can you try this method on your data to see if it works?

I am not entirely sure the 'select only 1 segment'-part is the most efficient one but it works :)

FME Inspector:

FME Workbench:

The segmentID used in the FeatureMerger is created in the Counter.

I implemented this method to find out how it works but I cannot find out what should happen with the MeasureExtractor:2 in combination with the StatisticsCalculator since the attribute '_point_measure' is empty when testing with my testdata.

Could you confirm if the result of the MeasureExtractor:2 should be the following?

Completely different approach flashed. Assuming that each line can be split into three parts by a pair of two points representing a section, the middle part is the required one.

1. Once connect the three parts with the LineJoiner.

• Group By: <line ID attribute>
• Preserve Original Orientation: yes
• List Name: _list
• Preserve Lines as Path Segments: Yes

2. Split the resulting line (path) into three parts again, with the PathSplitter.

• Segment Number Attribute: _segment_number
• List Attribute: _list{}

The segment having 1 as "_segment_number" is the middle segment.

The ability to set measure to points of the PointOnLineOverlayer is relatively new (maybe FME 2015.1+?). Which version of FME are you using?.

I was working in build 15250 and it didn't work. In build 15482 it does.

Thank you!

I know this is an old post at this point, but does anyone know how to do this when there are points between the two target points?  I have a set of pairs of points, each which has a unique identifier (not road segment, alas). Each pair is a start and end point that I want to overlay on our streets and extract all of the street segments between them.

But as you can see, there are other pairs of points between them. Does anyone know how to modify this workflow for the above?

User created a new post here: 

• Extract all line segments between many pairs of points