Description
 

The scenario 4 is about making point clouds covering large areas from multiple small point clouds. This is achieved through thinning (or decimation), that is, reducing the number of points, and combining of the source point clouds into a single geometry:



This can be useful for creating mosaics of administrative units such as cities or counties, parks, future development areas etc:


Source Point Clouds
(529 LAS files with >500,000 points each)    

County Mosaic
(single LAS file with 1,000,000 points)



In flat areas, it makes sense to add to the workspace above a Scaler transformer, which can imporve visualization experience by exaggerating Z values:


Perspective View
"As Is"   

Perspective View
scaled 25 times along Z



The attached template contains only 6 source LAS files, however, all the tests and screenshots were made on a dataset with over 500 files:

See the attached template workspace LAS Thinning and Combining.fmwt