<< Click to Display Table of Contents >> Navigation:  Ground Modelling > Create model > from .xyz file Triangulating

Purpose

To create a model from co-ordinate files containing random data.

2103.079,2264.680,93.777      

2044.022,2246.249,89.397      

2121.200,2312.103,90.164        

2113.666,2319.909,89.514        

2021.333,2291.886,86.680

 

 

Operation

Select the point data file.

Enter the output model name.

 

 

Smart point reduction

This option will deduct level points from the data and hence reduce the size of the generated ground model. The reduction is controlled by the "Nominal vertical tolerance" parameter which sets the approximate maximum relative level difference allowed compared with a pseudo surface at the point's general location. E.G if the parameter is 0.25 then the finished ground model's level accuracy should not be much worse than +- 25cm from the original level points

 

The accuracy and point reduction effectiveness can't be guaranteed and is always dependent on source data but in a typical sample the amount of ground model triangles has been reduced from 90 Million to 7.5 Million with nominal vertical tolerance of 0.25.

 

Ground model header info

These options add information to the ground model file's header, this will be visible when selecting and browsing ground models for subsequent functions.