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Results tagged with lidr
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user 66743
R package for Airborne LiDAR Data Manipulation and Visualization in Forestry Applications
1
vote
Dropping points based on class number in lidR
I also tested the functionality of some filters in LAS2LAS if they work in lidR and functions such as drop_z, -last_only also worked which is great, however not listed in lidR documentation. … It would be great to see lidR keep class, lidR drop z, lidR last only filters in future versions of lidR documentation. …
- 894
1
vote
2
answers
768
views
Dropping points based on class number in lidR
I have a TLS point cloud which were classified into ground (class 2) and unclassified (class 1).
lasinfo (190812) report for 'infile.laz'
reporting all LAS header entries:
file signature: …
- 894
3
votes
1
answer
332
views
Calculating roughness index of multiple LAZ files with lidR
How do I calculate a surface roughness index of multiple lidar point clouds with lidR rumple_index? … library(lidR)
files <- list.files(path= "/pathToFiles", pattern= "*.laz", full.names = TRUE, recursive = FALSE)
O = lapply(files, function(x) {
las = readLAS(x, select = "xyzc", filter = "-drop_z_below …
- 894
1
vote
1
answer
66
views
Error with 0 point layer in lidR [closed]
I am trying to calculate roughness index for different vegetation layers in each plot with following code using lidR package. …
- 894
1
vote
1
answer
96
views
How to exclude bounding boxes of plots in lascatalog
If I want to make small chunks, size of 10m, lidR gives warning:
Be careful, a chunk size smaller than 250 is likely to be irrelevant. … Be careful, some tiles seem to overlap each other. lidR may return incorrect outputs with edge artifacts when processing this catalog. …
- 894
1
vote
1
answer
182
views
Using function lasdetectshape of lidR
I would like to try "lasdetectshape" in lidR package to detect line pattern objects in my point cloud. … , shp_line, attribute = "Shape", filter = NULL)
could not find function "lasdetectshape"
I tried re-install lidR package and re-started R with no sucess. …
- 894
3
votes
1
answer
305
views
Different results in metrics calculated with LAStools and lidR
I tried to calculate voxels with LAStools and lidR and got significantly different results. I was wondering if someone can make clear what is happening. … height_cutoff 1.3 -files_are_plots -names -o outfile.csv
Result:
plots ske kur
72a-4.laz 1.0905 5.58125
11a-4.laz 0.362 2.594
34-2.laz 0.1675 2.00875
63a-1.laz -0.3115 2.36
lidR …
- 894
5
votes
3
answers
2k
views
Removing noise from point cloud with lidR package
Is there a function in the lidR package which can be used to remove noise? …
- 894