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Getting coordinates out of .laz and into .csv

  • August 22, 2018
  • 2 replies
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N

Hello,

I am new and just starting out using FME. I have several .LAZ files and I need to get the coordinates and elevation out and into a .CSV file. I have tried to use the LAS reader >>> Point Cloud Coercer >>> CSV writer. All I get is a file filled with commas. Can someone walk me through what I need to do to get the x,y, and z data?

Thanks

Best answer by takashi

Hi @nt, you can use the CoordinateExtractor (Mode: Specify Coordinate, Coordinate Index: 0) to extract coordinate values (x, y, z) as attributes after applying the PointCloudCoercer, then write the attributes into the destination CSV file.

Alternatively, you can use the Point Cloud XYZ Writer to directly write a point cloud feature into a text file, without using any transformer. File extension, delimiter, etc. can be specified via the writer parameters. See the help on the writer to learn more: Point Cloud XYZ (POINTCLOUDXYZ) Reader/Writer

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2 replies

takashi
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  • takashiCelebrity
  • 7843 replies
  • Best Answer
  • August 22, 2018

Hi @nt, you can use the CoordinateExtractor (Mode: Specify Coordinate, Coordinate Index: 0) to extract coordinate values (x, y, z) as attributes after applying the PointCloudCoercer, then write the attributes into the destination CSV file.

Alternatively, you can use the Point Cloud XYZ Writer to directly write a point cloud feature into a text file, without using any transformer. File extension, delimiter, etc. can be specified via the writer parameters. See the help on the writer to learn more: Point Cloud XYZ (POINTCLOUDXYZ) Reader/Writer

Why not inspect features with Visual/Data Preview and Feature/Record Information before writing them into a destination dataset?
N
  • nt
  • Author
  • 1 reply
  • August 22, 2018

Hi @nt, you can use the CoordinateExtractor (Mode: Specify Coordinate, Coordinate Index: 0) to extract coordinate values (x, y, z) as attributes after applying the PointCloudCoercer, then write the attributes into the destination CSV file.

Alternatively, you can use the Point Cloud XYZ Writer to directly write a point cloud feature into a text file, without using any transformer. File extension, delimiter, etc. can be specified via the writer parameters. See the help on the writer to learn more: Point Cloud XYZ (POINTCLOUDXYZ) Reader/Writer

Hi takashi, thanks for your answer. I followed the 1st suggestion and was able to get the coordinates in the csv file. The headers are a bit off and there are 3 commas in front of each entry but I do have the x,y,z coordinates I was looking for.

 

Thank you.

 

 

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