ExportPoints in Metashape

[kaichand9]

Can someone help me in exporting clipped point cloud using python code in Metashape. I am using 1.6.4 version of Agisoft

[PolarNick239]

Hi,

Please refer to Python API - there are exportPoints(...) function, so:

If you need to export Dense Cloud points clipped to bounding box (region):

Metashape.app.document.chunk.exportPoints(path="...dense_cloud_clipped.ply", source_data=Metashape.DenseCloudData, clip_to_boundary=True)

If you need to export Tie Points (sparse cloud) clipped to bounding box (region):

Metashape.app.document.chunk.exportPoints(path="...tie_points_clipped.ply", source_data=Metashape.PointCloudData, clip_to_boundary=True)

[kaichand9]

Thanks for suggestions I wanted to export in .las file

I am using metashape 1.6.4 version.

Giving error in export format. I tried following - las, asprs las, pointformatlas. But not taking giving some error. Script below

import Metashape import os

doc = Metashape.app.document chunk = doc.chunk

path = Metashape.app.getSaveFileName("Export Points")

export_point_config = { 'binary': True, 'normals': True, 'colors': True, 'confidence':True 'format': 'LAS', }

chunk.exportPoints(path, **export_point_config)

Script running but no data/ files coming

[PolarNick239]

Can you please provide error message from console?

[kaichand9]

Ok

[PolarNick239]

It is due to a missing comma in the previous line: confidence:True.

After other fixes w.r.t. exportPoints signature in Python API:

import Metashape
import os

doc = Metashape.app.document
chunk = doc.chunk

path = Metashape.app.getSaveFileName("Export Points")

export_point_config = {
'binary': True,
'save_normals': True, # changed
'save_colors': True, # changed
'save_confidence':True, # changed
'format': Metashape.PointsFormatLAS, # changed
}

chunk.exportPoints(path, **export_point_config)

[kaichand9]

Highly appreciate your help. Script is working fine now. Exporting but only issue left is projection get changed to Geographic projection. Projection getting changed to Geographic, Not taking in which data processed in Metashape.

[PolarNick239]

Do you want to export in Local Coordinates like via GUI dialog? If so:

import Metashape
import os

doc = Metashape.app.document
chunk = doc.chunk

path = Metashape.app.getSaveFileName("Export Points")

export_point_config = {
'binary': True,
'save_normals': True,
'save_colors': True,
'save_confidence':True,
'format': Metashape.PointsFormatLAS,
'crs': Metashape.CoordinateSystem('LOCAL_CS["Local Coordinates(m)",LOCAL_DATUM["Local Datum",0],UNIT["metre",1,AUTHORITY["EPSG","9001"]]]'), # changed
}

chunk.exportPoints(path, **export_point_config)

[kaichand9]

Thanks for help. Yes I want to export like GUI. But when export using GUI it take default projection in which I have done processing in metashape Just after adding photos and processing I have defined projection system (WGS to EPSG -20355), then why it is asking to re-define projection again while exporting Point cloud using python. I just want projection to be exported in which I have done all the processing., Appreciate your help

[PolarNick239]

Then you can use chunk.crs:

import Metashape
import os

doc = Metashape.app.document
chunk = doc.chunk

path = Metashape.app.getSaveFileName("Export Points")

export_point_config = {
'binary': True,
'save_normals': True,
'save_colors': True,
'save_confidence':True,
'format': Metashape.PointsFormatLAS,
'crs': chunk.crs, # changed
}

chunk.exportPoints(path, **export_point_config)

[kaichand9]

Thanks mate. Script is working fine. Appreciate your support