I'm working with a V2.0 LAS file. Using las_read produces an error:
las_test<-read_las(file_url, replace_null=TRUE)
[1] "GoodmanPoint_-All-Logs.las"
[1] 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
Warning messages:
1: In data.table::fread(lines, showProgress = FALSE) :
Detected 3 column names but the data has 24 columns (i.e. invalid file). Added 21 extra default column names at the end.
2: In data.table::fread(lines, showProgress = FALSE) :
Stopped early on line 26. Expected 24 fields but found 25. Consider fill=TRUE and comment.char=. First discarded non-empty line: <<7024.00 32.1877 49.1371 96.3153 2.43900 -2.200e -04 11.8670 85.7672 6.15800 52.1994 93.3572 2.64798 0.03725 10000.00 0.14848 0.24008 0.61144 0.00000 0.00000 0.00000 0.00000 0.00000 0.00000 1.00000>>
The -2.200e -04 value I believe is the problem. There is a space in between the "e" and the "-" that is causing data.table::fread to add an extra column for this line. I attempted to remove the space using a regex prior to reading it, but there is a line in the .las_get_log_data function that adds the space back in. On line 169 in las_read.R there is lines <- stringr::str_replace_all(lines, "-", " -") which adds a space prior to any negative symbol. Removing this fixes the function for me and the file reads in normally.
I figure this step is here for a reason. But wanted to let you know that with at least some .las log files this breaks read_las().
I'm working with a V2.0 LAS file. Using las_read produces an error:
The
-2.200e -04value I believe is the problem. There is a space in between the "e" and the "-" that is causingdata.table::freadto add an extra column for this line. I attempted to remove the space using a regex prior to reading it, but there is a line in the.las_get_log_datafunction that adds the space back in. On line 169 inlas_read.Rthere islines <- stringr::str_replace_all(lines, "-", " -")which adds a space prior to any negative symbol. Removing this fixes the function for me and the file reads in normally.I figure this step is here for a reason. But wanted to let you know that with at least some .las log files this breaks read_las().