 Search the Knowledgebase |
 Browse by Category |
|
|
|
| When I attach a HeightField to a DEM or GRD file, how do I set the Scale so that the HeightField matches the Z axis? |
| User Opinions |
75%
25%
|
|
Thank you for rating this answer.
|
When a user imports a DEM or GRD file as a Curvilinear lattice and attaches a HeightField, the HeightField is in the correct location. If the DEM or GRD is imported as a uniform lattice, the Z axis is imported at Z = 0.
In Voxler 1 and 2, use the following equation to calculate the HeightField Scale:
Scale = (DataMax - DataMin) / (0.5 * sqrt((xMax-xMin)^2 + (yMax-yMin)^2))
To adjust for the offset of the DataMin value, insert a Transform module between the Gridder output and the HeightField input and offset the Z axis by the DataMin value.
Terminology note: DataMax and DataMin are referring to Zmax and Zmin
See attached Excel file for an example of the equation.
|
| Visitor Comments |
|
No visitor comments posted. Post a comment
|
Print this page
Email this page
Post a comment