3D Point Interpolation Generate 3D Grid

Instructions for use

Voxel Grid volume data belongs to raster data. Raster data is organized in the form of grid and uses pixel values of two-dimensional grids to record data. Each grid (cell) represents a pixel element. Grid values can describe various Data Information. Each grid in the Voxel GridVolume Dataset stores the value of the three-dimensional volume data in a slice sampling mode.

Three-dimensional point interpolation Generate 3D Grid can be divided into two ways: Inverse Distance Weighting and Ordinary Kriging. Refer to About interpolation for details.

Operation steps

  1. Open the Datasource with the 3D Point Dataset at the Workspace Manager ". On the 3D Data tab, in the 3D Field Data group, click the Generate 3D Grid button. Select Inverse Distance Weighting or Ordinary Kriging in the pop-up Generate 3D Grid dialog box, as shown in the following figure. The Set Parameters are the same.
    2. Figure: Generate 3D Grid dialog box
  2. Source Dataset: Set the 3D Point Dataset to be built and its eigenvalue field and scaling.
    • Eigenvalue: Set the minimum height value of the Voxel Grid volume data to be displayed, and the unit is m.
    • Eigenvalue scaling: set the maximum height value of the displayed Voxel Grid volume data in meter.
  3. Result Data: Set the parameters of the output Voxel GridVolume Dataset.
    • Datasource: Click the drop-down box on the right to select the Datasource used to save the Raster Dataset;
    • Dataset: Enter the name of the Voxel GridVolume Dataset. The default name is DatasetVolume.
    • Points for Interpolation Calculation: Set the number of points expected to participate in the interpolation operation. When the search mode is Fixed Radius, it indicates the minimum number of samples expected to participate in the operation; when the search mode is Fixed Count, it indicates the maximum number of samples expected to participate in the operation.
    • Interpolation Power Index: Set the power of distance weight calculation. The default value is 1.
    • Resolution: Set the resolution of Raster Data obtained by 3D Interpolation operation. This value cannot exceed the side length of the Bounds range of the Dataset to be analyzed. The default value is 1.
    • Interpolation Search Method: set the method to search for the points involved in the interpolation. The method includes three methods as follows:
      • Do not search: Use all input points for interpolation analysis.
      • Fixed Radius: All sampling points within the specified radius participate in the interpolation operation of grid cells.
      • Fixed Count: The specified number of sampling points nearest to the Distance Raster unit participate in the lookup operation.
    • Pixel Format: Sets the Pixel Format type for grid and Image Data storage. The default is Single.
    • Search Radius: set the search radius for searching the participating operation points. The search radius determines the search range of the participating points. When calculating an unknown value at a position, The location will be taken as the center of the circle, the value of the Property Settings will be taken as the radius, and the sampling points falling within this range will participate in the operation. That is, the predicted value of the position is determined by the value of the sampling point in the range. The default is 0.
  4. Cut plane height setting: Set the height of each Dataset Section.
    • Number of splits: Sets the number of split levels for the cut plane.
    • Section Height: Sets the height of the section plane at each level.
  5. After setting the above parameters, click OK to execute Generate 3D GridVolume Dataset.

Precautions

  • The 3D point construction voxel grid "button in the Voxel Grid" group can be clicked only when the Datasource contains a 3D Point Dataset. Otherwise, the 3D point construction voxel grid "function cannot be triggered.