las2txt and ring number

[Katie Strattman]

Hello, 

I am working with .laz files from a Velodyne system with 16 scanner rings. It seems that a common problem with Velodyne systems is missing data for return_number and number_of_returns. So, I am using the las2txt tool to convert my .laz files to .txt and will calculate this data manually. I need to retain the ring number in my output text file but I do not see it as an option when I am selecting the data for parsing. Is there a way to retain the ring number or can this feature be added? Thanks in advance 

Kind regards,

Katie 

[Jochen Rapidlasso]

Hi Katie,

the "ring number" is no part of the LAS standard. So I guess Velodyne store this data in another data field.

If you provide a (small) sample I can have a look or may another LAStools user can give you information about.

Right now I think we can export everything out of a LAS file to text.

May you also just try out all parameters and see where the ring number shows up :)

Best regards,

Jochen @rapidlasso

[Katie Strattman]

Dear Jochen,

I was able to export it as an additional attribute stored as extra bytes, for example -parse 0, so seems like it is basically already implemented. Thank you for your help!

Kind regards,

Katie

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