How to apply the following formula on PointClouds?

Hello and thank you for the reply.

Here's my setup in the  PointCloudExpressionEvaluator:

Output is a LAS file. I'm getting this message:

Failed to parse the EXPRESSION_LIST clause. The provided value was '((@XValue()/0.999604)-482902.876)+(((@YValue()/0.999604)-5447183.654)*0.000039706);((@YValue()/0.999604)-5447183.654)-(((@XValue()/0.999604)-482902.876)*0.000039706)'. Please ensure that your syntax is correct

Any idea?

Thanks,

Tomer

Thank you very much - that was it. Great.

Much appreciated.

Tomer

You need a Dynamic Workflow for this. Multiple ways to do.

Using FeatureReaders and FeatureWriters makes more sense and I think are easier than classic readers and writers.

What I use a lot is a FeatureReader with a Directory and File Pathnames reader to scan a directory for files. Then another FeatureReader to read the file and a FeatureWriter to write the result.

Some considerations:

• You can do it all in one workflow. The downside is if the process takes a long time and you have an error when you're half way, you need to restart.
• You can do it in two steps, scan the directory and write this out to a to-do table. Then use a parent and child construction, the parent reading the table with the files which need to be processed, starting the child workspace for each file. Let the child update the table when the file was successfully processed. Now you can stop and start the processing.

With the volume of files you have you probably want to do it file by file.

One way is to use the Offsetter to move the object to (0,0). Then use the Scaler to resize. Use the offsetter again to move back to original coordinates. I think I use the CenterPointExtractor (center of gravity) to get a coordinate as attribute to use in the Offsetters.

Happy I could help. If you create separate questions next time other users have more chance to find the answers on their similar questions.