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Question

Building route events nativ FME - possible with newer Versions ?

geoal
Contributor
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  • geoalContributor
  • Contributor
Hi all !

 

 

I've been trying with FME and searching FMEPedia for several days without success.

 

Can I solve this old Problem comfortable with FME2013SP2 or 2012 SP3 ?

 

I found a few threats about this, discussed about older Versions like 2007, but without solutions working for me.

 

This seems to be an recurring problem over years, so I hope safe did anything in the meantime to make the workflow better.

 

 

Sources:

 

Line featues out of an SDE DB incl. SDE30_measures + Excel Sheet which includes ofcourse RouteIDs and Attributes for Route Event builing(Start & Endpoints).

 

 

I´ve tried to find a way with Feature Merger to join Attributes and Geometry in connection with Snipper, without getting satisfactory results.

 

 

The Workbench is running, but the results are incorrect and i have no idea why, no errors are occurring.

 

FME always select the correct Route, but the Snipper ist failing without an error.

 

The result is the complete route, no segmantation :(

 

 

Any idea ?

 

Thanks in advance

 

 

 

 

6 replies

david_r
Evangelist
  • david_rEvangelist
  • July 16, 2013
Hi,

 

 

if you're trying to calculate routes on a network, try the new ShortestPathFinder transformer. It expects a topologically correct network as well as a simple line(!) feature connecting the start and destination coordinates.

 

 

There is a lot more info here: http://fmepedia.safe.com/articles/Samples_and_Demos/Find-the-Shortest-Path-Between-a-Start-and-End-Point

 

 

David

 

 

 

takashi
Contributor
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  • takashiContributor
  • Contributor
  • July 17, 2013
Hi,

 

 

I guess you are looking for a way to split lines at node points and / or to associate  node points and lines. If so, the TopologyBuilder, PointOnLineOverlayer, AnchoredSnapper etc. might help you.

 

Take a look at those transformers.

 

 

Takashi
geoal
Contributor
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  • geoalContributor
  • Author
  • Contributor
  • July 18, 2013
What i want to do is:

 

Join the excel sheet to the Dataset which includes the Geometry - that works

 

The Geometry owns measures for each of its Line features out of the SDE Database.

 

 

The Goal is dynamic Segmentation/linear Referecing.

 

The joined Excel Data contain columns for start and end of the desired segement e.g. from(1.5) to(2.0)

 

I want FME to snip this dynamic interval from excel, out of every Route in the list.

 

 

Length unit is kilometer

 

Route 1 contains measures 0 -> 18.32

 

snip Route 1:  1.5 - 2.0

 

 

Goal: line feature with 500meters referenced and snipped out of source data.

 

There is no point data inside the source files.

 

The Shortestpathfinder claims nodes, I 've also tried the other recommended transformers but I think they are pointing in the wrong direction.

 

Or do i have to go the detour with points ?

 

The Snipper should exactly do what i want, but it doesn't work so far.

 

 

Does FME

 

 

 

 

geoal
Contributor
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  • geoalContributor
  • Author
  • Contributor
  • July 18, 2013
....treat the measures out of ArcGIS in another way like FME does it ?
takashi
Contributor
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  • takashiContributor
  • Contributor
  • July 18, 2013
Hi,

 

 

I think the Snipper should work. One possible reason of the wrong result is that the unit of coordinate value of the geometry data is not kilo-meter (meter, degree?). The Snipper (Snipping Mode: Distance (Value)) assumes the distance unit of geometry is same as the unit of specified parameter values (Starting / Ending Location). 

 

 

Takashi
takashi
Contributor
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  • takashiContributor
  • Contributor
  • July 19, 2013
... or "Measure (Value)" mode of the Snipper might work.

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