las2txt64

[Alejandro Hinojosa]

Hello

las2txt64 does not send the output to the screenany more, only to output file if specified -o out.txt, but not to screen. That option was useful to explore before sending to an output file.

The -subseq start end modifier does not work anymore ?  for instance, in cases where you want to output the first 100 points you would use -subseq 1 100. Is there another way?

I see most commands are 64, the ancestors are not working anymore. 

Thanks

--

Alejandro Hinojosa

Departamento de Geología

Ciencias de la Tierra

CICESE  www.cicese.edu.mx 

Carretera Ensenada-Tijuana No. 3918,

Zona Playitas, CP. 22860,

Ensenada B.C., México.

+52 (646) 175-0500 ext 26045

http://orcid.org/0000-0002-2282-337X 

[rapid...@gmail.com]

Hi Alejandro,
in general we try to be absolutely compatible to the 32 bit versions where possible, but enhance the speed and ability to handle larger files with the 64 bit version.
If you compare the 32 Bit version to the 64 Bit version please send the commands you did run, so we can compare as well.
If there are differences in data please also send a small data sample.

About sending to screen:
You always can use -stdout to output to screen/console.
So
    txt2las64 -i tmp.txt -otxt -stdout
should work.

About the "-stdout" argument:
After consulting the laslook argument search we see that "-subseq" is implemented in las2las, not in txt2las.
So
   las2las64 -i tmp.txt -otxt -stdout -subseq 5 2
should work.
Please keep in mind that the point index starts with 0 and the second number is not the end index but the number of points processed.

Cheers,

Jochen @rapidlasso

[Alejandro Hinojosa]

HI Jochen,

 Thanks for your prompt response.I was teaching my students about color filtering and how cool is to do it with HSL color model, thanks. 

I tested the -otxt -stdout modifiers to redirect output  to screen and it worked perfect. 

The -subseq in las2txt64 is not recognized. I was looking for something like head or tail in Unix, or in Pandas dataframes in Python notebooks, to view only a few records or points. Subseq would do it. Hopefully it will be included in a future version, or as an option to see a few points at the beginning or end of the file.

A pointer to a laslook tutorial would be great, I have not worked with it, so I do not know it. I am used to the command line, scripts, commands history,  but students may prefer a GUI interface.  

Thanks

Alejandro 

On Thu, Apr 2, 2026 at 2:21 AM rapid...@gmail.com <rapid...@gmail.com> wrote:

***************************************************************************************

** ADVERTENCIA: Mensaje recibido desde una dirección EXTERNA al CICESE **

***************************************************************************************

--
Download LAStools at
https://rapidlasso.de
Manage your settings at
https://groups.google.com/g/lastools/membership
---
You received this message because you are subscribed to the Google Groups "LAStools - efficient tools for LiDAR processing" group.
To unsubscribe from this group and stop receiving emails from it, send an email to lastools+u...@googlegroups.com.
To view this discussion visit https://groups.google.com/d/msgid/lastools/2c727778-b3f2-4e54-9444-f38aee6fea29n%40googlegroups.com.