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Re: [cgal-discuss] Reading a las file.


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  • From: Maxime Gimeno <>
  • To:
  • Subject: Re: [cgal-discuss] Reading a las file.
  • Date: Thu, 24 Sep 2020 17:06:33 +0200
  • Authentication-results: mail3-smtp-sop.national.inria.fr; spf=None ; spf=Pass ; spf=None
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Why do you link privately with CGAL ? Why not target_link_library(dsm PUBLIC CGAL) ? 

Le jeu. 24 sept. 2020 à 17:00, Himanshu Sharma <> a écrit :
Yes, I did that.

I also tried with CGAL 5.1 just now. I am attaching the CMakeLists.txt for 5.1. For this, it is unable to find CGAL_LASLIB_support. Can you help with this as well


include could not find load file:


    CGAL_LASLIB_support



From: <> on behalf of Maxime Gimeno <>
Sent: Thursday, September 24, 2020 10:50 AM
To: <>
Subject: Re: [cgal-discuss] Reading a las file.
 
Did you include <CGAL/IO/read_las_points.h> ?

Le jeu. 24 sept. 2020 à 16:44, Himanshu Sharma <> a écrit :
Sorry, I am using 5.0 i meant.

From: Himanshu Sharma <>
Sent: Thursday, September 24, 2020 10:44 AM
To: <>
Subject: Re: [cgal-discuss] Reading a las file.
 
I am using 5.1
It is NOTICE : the LAS reader found.

Regards,
Himanshu

From: <> on behalf of Maxime Gimeno <>
Sent: Thursday, September 24, 2020 10:21 AM
To: <>
Subject: Re: [cgal-discuss] Reading a las file.
 
Actually it depends on your version of CGAL. <5.1, your code is probably right, if LASLIB_FOUND is TRUE. What is your CMAKE output during configuration ?
NOTICE : the LAS reader found.
or
NOTICE : the LAS reader test requires LASlib and will not be compiled.
?

Le jeu. 24 sept. 2020 à 16:11, Himanshu Sharma <> a écrit :
I see. I have attached the CMakeLists.txt along.

I tried to follow CMakeLists.txt of read_las_example from Point_set_processing_3, but didnt get it right it seems.

Regards
Himanshu

From: <> on behalf of Maxime Gimeno <>
Sent: Thursday, September 24, 2020 2:13 AM
To: <>
Subject: Re: [cgal-discuss] Reading a las file.
 
Hello,

It looks like you did not link with LAS. Can you provide your CMakeLists.txt ? You must have forgotten to link with the target CGAL::LASLIB_support. Have a look here : https://doc.cgal.org/latest/Manual/thirdparty.html#thirdpartyLASlib

Le jeu. 24 sept. 2020 à 05:27, Himanshu Sharma <> a écrit :

Hello,


I am trying to read a .las file into Point_set_3. Below is the code snippent. However this throws following error:

error: no matching function for call to 'make_las_point_reader.

I am not sure what goes wrong here. I understand that the argument to the make_las_point_reader is not of the right type.

 


std::ifstream ifile (argv[1], std::ios_base::binary);

  CGAL::Point_set_3<Point_3> points;


  if (!CGAL::read_las_points

      (ifile,

       points.index_back_inserter(),

       CGAL::make_las_point_reader(points.point_map())))

    {

      std::cerr << "Error: cannot read file " << argv[1] << std::endl;

      return EXIT_FAILURE;

    }


Regards
Himanshu

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