Opengeo suite has provided a tutorial on how to manage LiDAR data using postgresql. I was trying to follow the tutorial in this link.

I am new to Linux and using Ubuntu 12.04. I have successfully installed Opengeo suite 4.1. I started off with the tutorial smoothly, installed point cloud extension and pdal and downloaded the example data. I only got stuck at the section "Loading LiDAR into the database". In this section, I followed the tutorial and implemented following codes successfully:

CREATE EXTENSION pointcloud_postgis;

And also the following pdal commands run smoothly:

pdal info --input 20090429_42122c8225_ld_p23.laz --schema
pdal info --input 20090429_42122c8225_ld_p23.laz --metadata --xml

Now I faced the issue while implementing the following command:

pdal pipeline laz2pg.xml

From the terminal I got the error:

mzaman@ubuntu:~/Downloads$ pdal pipeline laz2pg.xml Caught PDAL exception: unable to connect to database

This is to mention that, I have created a database in Postgresql called 'LiDAR' using pgAdmin. I kept another terminal open and run the following command using users 'postgres' and 'mzaman'.

mzaman@ubuntu:~/Downloads$ sudo -u mzaman psql LiDAR

psql (9.3.4) Type "help" for help. LiDAR=#

I also tried with the user 'postgres',

entermzaman@ubuntu:~/Downloads$ sudo -u postgres psql LiDAR

But the first terminal where I run pdal command, still shows the error:

Caught PDAL exception: unable to connect to database.

My question is, how to bypass this error?

  • You need to do it as postgres user.
    – user40499
    Nov 12, 2014 at 15:03

1 Answer 1


Great to find you here.

Have you edited the laz2pg.xml to point to your DB? You mentioned you created a database and named it "LiDAR" while the tutorial named the database "lidar". In linux world I believe "LiDAR" != "lidar".

<Option name="connection">dbname='lidar' user='postgres'</Option>

Try changing that line to:

<Option name="connection">dbname='LiDAR' user='postgres'</Option>


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