20170813_Lidar data processing in ArcMAP_用ArcMAP处理lidar数据

Data: Herberg Memorial Forest lidar data in *.las format. In folder "Proclaser"

Software: ArcMap 10.3.1

Spatial reference: WGS_1984_UTM_zone_18N

Create LAS dataset

Las dataset is different from Las file in ArcMap

Creating a LAS dataset

Build DEM and DSM

1. filter


Ground: used to generated DEM

Non-ground: used for statistics

First: used to generate DSM

2. LAS dataset to raster


When creating LAS dataset, the XY Coordinate system needs to be set to unknown in order to match with plots data. I think the default coordinate system is not correct. If the coordinate system is set to others beside unknown, it can not match with plot data. In the meantime, the extent of LAS dataset will change in N-S direction.

For now, I can not find a way to correct this problem. Therefore, I will leave the coordinate system in the unknown status.

Plot statistics

For each plot:

1. Buffer with distance 11.35 m (circular plot with the radius of 11.35 m).

2. Add LAS tools to ArcToolBox

Download link: https://rapidlasso.com/lastools/

3. ArcToolBox -- LAStools -- lasClip

The toolbox needs to install in a directory name without spaces.

When specifying the output file location, name the file with .las.

4. Calculation of lidar metrics

The results I got from FUSION is similar to these from LAStools. 

To see:



  • 今天看完了这本书,感触良多,却思绪十分混乱,不知道问题出在了哪里,东野圭吾将故事写得很玄妙,不得不说作者确实是一个...
    赫拉阅读 296评论 0 1
  • 理论上说,学生是不该上补习班的。 中小学阶段,只要老师能较为正确的教学,学生能较为正常的完成学业,他已经合格了,他...
    yhj灵阅读 220评论 0 0
  • 你曾以为是特别独一无二的,可现实让你从云端跌入谷底。像从心里长出一根刺在毫无防备时顶尖冒出,像心湖徜徉中猛的撞击突...
    墨蒹葭阅读 117评论 0 0
  • MindManager中除了有思维导图、流程图等导图结构,还有一种组织状导图。这种导图,可以从上至下的来展现一个组...
    一只流浪喵阅读 4,786评论 0 1