CloudCompare forum

First off congrats on the software, its brilliant.

I am comparing the distance between two point clouds using the C2C tool. The output I get is the 'C2C absolute distances' scalar field. Is there a way to save or attach this scalar field to the original .las file? My goal is to take these results and bring it into another software program. It appears that I can export the C2C distances in a .txt or csv file. Can I also do the same thing for .las files?

Thanks for the help!

Jeff

Hi,

In fact, LAS files can be associated to several scalar fields but their role and format is pre-determined and you can't change them.

In CloudCompare, you just have to give any scalar field the "right" name (case sensitive) before saving the cloud as a LAS file. But your problem will be to choose the right field. And a bigger problem might be that there's only one 64 bits 'double' field that could be used to store a distance field properly: "Time".

There' a "User Data" field but it's only 8 bits (it could work if your distance field was only integer values between 0 and 255 (hum, hum).

For the records, here are all the LAS fields supported by CC and their size (in bits)

• "Intensity" (16)
• "Return Number" (3)
• "Number of Returns" (3)
• "Scan Direction" (1)
• "Flightline Edge" (1)
• "Classification" (8)
• "Scan Angle Rank" (8)
• "User Data" (8)
• "Point Source ID" (16)
• "Red" (16)
• "Green" (16)
• "Blue" (16)
• "Time" (64)

Thank you very much for the information Daniel!