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How to delete duplicate LiDAR points?
Removing duplicates from large LAS filesFinding and merging duplicate points in ArcGIS Desktop?Removing coincident points with z values greater than minimumDelete duplicate polygon nodes with PostGISLiDAR GUI tool for selecting and saving groups of points?Why does Lidar to Raster tool in ArcGIS create shifted raster cells?Deleting duplicate points except those with different attributes in QGIS?Classifying LiDAR ground points using laspy?Batch processing multiple files with MCC-LIDAR?Converting LiDAR .las to .xyz with LAStools outputs incorrect projected coordinates?Open source approach to classifying and removing LiDAR points from overlapping scans?
How can I delete duplicate LiDAR points? I incorrectly read the same las twice and saved as a one file resulting in duplicate XY points. How should I delete these duplicate points?
point lidar duplication remove
edited Jan 4 '18 at 16:47
Andre Silva
7,735113685
asked Mar 11 '15 at 21:01
RameshRamesh
161
add a comment |
How can I delete duplicate LiDAR points? I incorrectly read the same las twice and saved as a one file resulting in duplicate XY points. How should I delete these duplicate points?
point lidar duplication remove
edited Jan 4 '18 at 16:47
Andre Silva
7,735113685
asked Mar 11 '15 at 21:01
RameshRamesh
161
1
What software and/or tools are you using and what format is your data in (.las for example)? In ArcGIS there's a Delete Identical tool at the Advanced License level... but I don't know if that would work on a LIDAR point cloud.
– Chris W
Mar 11 '15 at 21:12
add a comment |
How can I delete duplicate LiDAR points? I incorrectly read the same las twice and saved as a one file resulting in duplicate XY points. How should I delete these duplicate points?
point lidar duplication remove
edited Jan 4 '18 at 16:47
Andre Silva
7,735113685
asked Mar 11 '15 at 21:01
RameshRamesh
161
How can I delete duplicate LiDAR points? I incorrectly read the same las twice and saved as a one file resulting in duplicate XY points. How should I delete these duplicate points?
point lidar duplication remove
point lidar duplication remove
edited Jan 4 '18 at 16:47
Andre Silva
7,735113685
asked Mar 11 '15 at 21:01
RameshRamesh
161
edited Jan 4 '18 at 16:47
Andre Silva
7,735113685
asked Mar 11 '15 at 21:01
RameshRamesh
161
edited Jan 4 '18 at 16:47
Andre Silva
7,735113685
edited Jan 4 '18 at 16:47
Andre Silva
7,735113685
edited Jan 4 '18 at 16:47
Andre Silva
7,735113685
7,735113685
asked Mar 11 '15 at 21:01
RameshRamesh
161
asked Mar 11 '15 at 21:01
RameshRamesh
161
asked Mar 11 '15 at 21:01
RameshRamesh
161
161
1
What software and/or tools are you using and what format is your data in (.las for example)? In ArcGIS there's a Delete Identical tool at the Advanced License level... but I don't know if that would work on a LIDAR point cloud.
– Chris W
Mar 11 '15 at 21:12
add a comment |
1
What software and/or tools are you using and what format is your data in (.las for example)? In ArcGIS there's a Delete Identical tool at the Advanced License level... but I don't know if that would work on a LIDAR point cloud.
– Chris W
Mar 11 '15 at 21:12
1
1
What software and/or tools are you using and what format is your data in (.las for example)? In ArcGIS there's a Delete Identical tool at the Advanced License level... but I don't know if that would work on a LIDAR point cloud.
– Chris W
Mar 11 '15 at 21:12
What software and/or tools are you using and what format is your data in (.las for example)? In ArcGIS there's a Delete Identical tool at the Advanced License level... but I don't know if that would work on a LIDAR point cloud.
– Chris W
Mar 11 '15 at 21:12
add a comment |
3 Answers
3
active
oldest
votes
You can delete all duplicate points from a las, laz or ascii file using lasduplicate in LAStools.
Finds and removes all duplicate points from a LAS/LAZ/ASCII file. In
the default mode those are xy-duplicate points that have identical x
and y coordinates. The first point survives, all subsequent duplicates
are removed. It is also possible to keep the lowest points amongst all
xy-duplicates via ‘-lowest_z’.
It is also possible to remove only xyz-duplicates points that have all
x, y and z coordinates identical via ‘-unique_xyz’.
Also, lasfilterduplicates in the lidR package (documentation p. 51):
lasfilterduplicates(las)
Filter points that appear more than once in the point cloud according
to their X Y Z coordinates
answered Mar 11 '15 at 21:10
Aaron♦Aaron
38.2k20109254
add a comment |
You can also try a tool in WhiteboxTools - LidarRemoveDuplicates. You can run it separately through CMD line or as QGIS 3.4 plugin. Instruction on how to use and install WhiteboxTools in on their webpage
answered Jan 21 at 10:46
Jost HobicJost Hobic
448213
add a comment |
If you consider to remove duplicated points on X, Y coordinates (with different Z), after using lasfilterduplicates function from lidR package, you may use lasfilter function.
las <- lasfilter(las, !duplicated(las@data, by = c("X", "Y"))
I think it will retain the first return points (from that duplicated points).
answered 15 mins ago
bangbang
10815
add a comment |
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3 Answers
3
active
oldest
votes
3 Answers
3
active
oldest
votes
active
oldest
votes
active
oldest
votes
You can delete all duplicate points from a las, laz or ascii file using lasduplicate in LAStools.
Finds and removes all duplicate points from a LAS/LAZ/ASCII file. In
the default mode those are xy-duplicate points that have identical x
and y coordinates. The first point survives, all subsequent duplicates
are removed. It is also possible to keep the lowest points amongst all
xy-duplicates via ‘-lowest_z’.
It is also possible to remove only xyz-duplicates points that have all
x, y and z coordinates identical via ‘-unique_xyz’.
Also, lasfilterduplicates in the lidR package (documentation p. 51):
lasfilterduplicates(las)
Filter points that appear more than once in the point cloud according
to their X Y Z coordinates
answered Mar 11 '15 at 21:10
Aaron♦Aaron
38.2k20109254
add a comment |
You can delete all duplicate points from a las, laz or ascii file using lasduplicate in LAStools.
Finds and removes all duplicate points from a LAS/LAZ/ASCII file. In
the default mode those are xy-duplicate points that have identical x
and y coordinates. The first point survives, all subsequent duplicates
are removed. It is also possible to keep the lowest points amongst all
xy-duplicates via ‘-lowest_z’.
It is also possible to remove only xyz-duplicates points that have all
x, y and z coordinates identical via ‘-unique_xyz’.
Also, lasfilterduplicates in the lidR package (documentation p. 51):
lasfilterduplicates(las)
Filter points that appear more than once in the point cloud according
to their X Y Z coordinates
answered Mar 11 '15 at 21:10
Aaron♦Aaron
38.2k20109254
add a comment |
You can delete all duplicate points from a las, laz or ascii file using lasduplicate in LAStools.
Finds and removes all duplicate points from a LAS/LAZ/ASCII file. In
the default mode those are xy-duplicate points that have identical x
and y coordinates. The first point survives, all subsequent duplicates
are removed. It is also possible to keep the lowest points amongst all
xy-duplicates via ‘-lowest_z’.
It is also possible to remove only xyz-duplicates points that have all
x, y and z coordinates identical via ‘-unique_xyz’.
Also, lasfilterduplicates in the lidR package (documentation p. 51):
lasfilterduplicates(las)
Filter points that appear more than once in the point cloud according
to their X Y Z coordinates
answered Mar 11 '15 at 21:10
Aaron♦Aaron
38.2k20109254
You can delete all duplicate points from a las, laz or ascii file using lasduplicate in LAStools.
Finds and removes all duplicate points from a LAS/LAZ/ASCII file. In
the default mode those are xy-duplicate points that have identical x
and y coordinates. The first point survives, all subsequent duplicates
are removed. It is also possible to keep the lowest points amongst all
xy-duplicates via ‘-lowest_z’.
It is also possible to remove only xyz-duplicates points that have all
x, y and z coordinates identical via ‘-unique_xyz’.
Also, lasfilterduplicates in the lidR package (documentation p. 51):
lasfilterduplicates(las)
Filter points that appear more than once in the point cloud according
to their X Y Z coordinates
answered Mar 11 '15 at 21:10
Aaron♦Aaron
38.2k20109254
edited Jan 25 at 4:05
answered Mar 11 '15 at 21:10
Aaron♦Aaron
38.2k20109254
answered Mar 11 '15 at 21:10
Aaron♦Aaron
38.2k20109254
answered Mar 11 '15 at 21:10
Aaron♦Aaron
38.2k20109254
38.2k20109254
add a comment |
add a comment |
You can also try a tool in WhiteboxTools - LidarRemoveDuplicates. You can run it separately through CMD line or as QGIS 3.4 plugin. Instruction on how to use and install WhiteboxTools in on their webpage
answered Jan 21 at 10:46
Jost HobicJost Hobic
448213
add a comment |
You can also try a tool in WhiteboxTools - LidarRemoveDuplicates. You can run it separately through CMD line or as QGIS 3.4 plugin. Instruction on how to use and install WhiteboxTools in on their webpage
answered Jan 21 at 10:46
Jost HobicJost Hobic
448213
add a comment |
You can also try a tool in WhiteboxTools - LidarRemoveDuplicates. You can run it separately through CMD line or as QGIS 3.4 plugin. Instruction on how to use and install WhiteboxTools in on their webpage
answered Jan 21 at 10:46
Jost HobicJost Hobic
448213
You can also try a tool in WhiteboxTools - LidarRemoveDuplicates. You can run it separately through CMD line or as QGIS 3.4 plugin. Instruction on how to use and install WhiteboxTools in on their webpage
answered Jan 21 at 10:46
Jost HobicJost Hobic
448213
answered Jan 21 at 10:46
Jost HobicJost Hobic
448213
answered Jan 21 at 10:46
Jost HobicJost Hobic
448213
answered Jan 21 at 10:46
Jost HobicJost Hobic
448213
448213
add a comment |
add a comment |
If you consider to remove duplicated points on X, Y coordinates (with different Z), after using lasfilterduplicates function from lidR package, you may use lasfilter function.
las <- lasfilter(las, !duplicated(las@data, by = c("X", "Y"))
I think it will retain the first return points (from that duplicated points).
answered 15 mins ago
bangbang
10815
add a comment |
If you consider to remove duplicated points on X, Y coordinates (with different Z), after using lasfilterduplicates function from lidR package, you may use lasfilter function.
las <- lasfilter(las, !duplicated(las@data, by = c("X", "Y"))
I think it will retain the first return points (from that duplicated points).
answered 15 mins ago
bangbang
10815
add a comment |
If you consider to remove duplicated points on X, Y coordinates (with different Z), after using lasfilterduplicates function from lidR package, you may use lasfilter function.
las <- lasfilter(las, !duplicated(las@data, by = c("X", "Y"))
I think it will retain the first return points (from that duplicated points).
answered 15 mins ago
bangbang
10815
If you consider to remove duplicated points on X, Y coordinates (with different Z), after using lasfilterduplicates function from lidR package, you may use lasfilter function.
las <- lasfilter(las, !duplicated(las@data, by = c("X", "Y"))
I think it will retain the first return points (from that duplicated points).
answered 15 mins ago
bangbang
10815
answered 15 mins ago
bangbang
10815
answered 15 mins ago
bangbang
10815
answered 15 mins ago
bangbang
10815
10815
add a comment |
add a comment |
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What software and/or tools are you using and what format is your data in (.las for example)? In ArcGIS there's a Delete Identical tool at the Advanced License level... but I don't know if that would work on a LIDAR point cloud.
– Chris W
Mar 11 '15 at 21:12