header_get_wktcs: Can't read CRS from header

[cstepper]

las_header.zip

Hi,
attached is my Header from a LAZ files i want to process.
Unfortunately I can't extract the CRS from the header, as the "WKT OGC COORDINATE SYSTEM" is in the liblas slot, which is not
browsed in header_get_wktcs.

Not sure, if my LAZ file is correct WRT laz standards, but it was directly exported from Pix4D Mapper.

Coud the liblas be integrated to the function?

las_header = readRDS(fs::path(Sys.getenv("HOME"),"las_header.rds"))
header = as.list(las_header)
#> Loading required package: lidR
header[["Variable Length Records"]] |> str(max.level = 2)
#> List of 3
#>  $ WKT OGC CS:List of 5
#>   ..$ reserved           : int 0
#>   ..$ user ID            : chr "LASF_Projection"
#>   ..$ record ID          : int 4224
#>   ..$ length after header: int 2243
#>   ..$ description        : chr "WKT2 VLR"
#>  $ liblas    :List of 6
#>   ..$ reserved                 : int 0
#>   ..$ user ID                  : chr "LASF_Projection"
#>   ..$ record ID                : int 2112
#>   ..$ length after header      : int 737
#>   ..$ description              : chr "OGC Transformation Record"
#>   ..$ WKT OGC COORDINATE SYSTEM: chr "COMPD_CS[\"ETRS89 / UTM zone 32N + DHHN2016 height\",PROJCS[\"ETRS89 / UTM zone 32N\",GEOGCS[\"ETRS89\",DATUM[\"| __truncated__
#>  $ NA        :List of 5
#>   ..$ reserved           : int 0
#>   ..$ user ID            : chr "liblas"
#>   ..$ record ID          : int 2112
#>   ..$ length after header: int 737
#>   ..$ description        : chr "OGR variant of OpenGIS WKT SRS"

^{Created on 2025-03-27 with reprex v2.1.1}

[Jean-Romain]

This does not respect the standard and is thus not read by header_get_wtkcs. But nothing prevent you to extract the WKT manually.

[cstepper]

This is what I did :). I will double check with Pix4D. Thanks