Issue: Unable to Generate Valid JSONL Output – All Vertices Are Null

[pedro-mar]

I encountered some issues while installing and using the Roofer tool.

Installation Issue

I am using Windows 11, and during installation, I had to use the command:

cmake --build build --config Release

instead of:

cmake --build build

When running the original command, I received the following error:

Make Error at build/apps/roofer-app/cmake_install.cmake:39 (file):
  file INSTALL cannot find "PATH/roofer/build/apps/roofer-app/Release/roofer.exe": No error.
Call Stack (most recent call first):
  build/apps/cmake_install.cmake:37 (include)
  build/cmake_install.cmake:42 (include)

Configuration Issue

After installation, I tried running the command:

roofer -c config_file

with configuration files in various formats, including:

• roofer -c config_file.txt
• roofer -c config_file.toml

The configurations used were as described in the CLI Application Documentation:

[input.footprint]
source = "PATHTOGPKG.gpkg"

[[input.pointclouds]]
name = "pointcloud"
source = "PATHTOLAZ.laz"

[output]
folder = "PATHTOOUTPUT"

I also tried the format from the FOSS4G presentation:

[input.footprint]
path = "PATHTOGPKG.gpkg"
id_attribute = "id"

[[input.pointclouds]]
name = "pointcloud"
path = "PATHTOLAZ.laz"

[reconstruction]
reconstruction_complexity = 0.7

[output]
path = "PATHTOOUTPUT"

Result Issue

Not all attempts produced an output. When there was output, it always contained:

"vertices": [[0,0,0],[0,0,0],[0,0,0],[0,0,0]]

or something similar, with all vertices being null.

Input Details
Both inputs (GPKG and pointcloud) are in EPSG:31983, and there is overlap between the two datasets. I was also unable to visualize the output with cjseqview, possibly due to the null vertices.

Could you please advise on these issues? Thank you!

[Ylannl]

Is your point cloud classified? By default roofer expects LAS class 6 for building points and class 2 for terrain points.