I have one large elevation model and numerous smaller elevation models (same resolution) which are within the area of the larger elevation model. The areas of the smaller elevation models are generated from a point cloud and clipped out according to a polygon (bridge). Now I want to merge the smaller elevation model areas into the larger DEM (wherever the smaller elevation models have a value, this should be used and if they have no value, the large elevation model should be used. My attempts with the RasterMosaicer unfortunately fail, because I cannot influence which elevation model is the "last" one. Is there another possibility to combine the different elevation models?
To try and better understand, why can you not influence the order of the elevation models into the RasterMosaicker?
+7- Contributor
david_r wrote:
To try and better understand, why can you not influence the order of the elevation models into the RasterMosaicker?
I think the problem is that I am not clear how I can influence the order. I have two inputs:
a) the DEM which covers the whole area
b) the smaller DEM which I cut out before. I have a Sorter-Transformer running, which sorts the DEMs by ID. Unfortunately the result is not what I hoped for.
Maybe this article can be of help in getting the right feature order: https://docs.safe.com/fme/html/FME_Desktop_Documentation/FME_Workbench/Workbench/Controlling-Transformer-Flow-at-Runtime.htm
Especially the last section.
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