HeightFields - Advanced Suggestions

This tutorial provides suggestions when using the HeightField module.

Two import methods are discussed in this advanced tutorial. You will import the same grid file using both methods.

Method 1

In the first method, you will load a Surfer grid file .GRD with a flat Z value where the gridded Z value is imported as the C value.

1. Click the File | New command to open a new Viewer window.

2. Click the File | Import command.

3. In the Import dialog, select the sample grid file BoulderColorado.grd from the Voxler 4 Samples folder (located at: C:\Program Files\Golden Software\Voxler 4\Samples) and click the Open button.

4. In the Lattice Import Options dialog, select the Import as uniform lattice (default) option and click OK. Selecting this option brings the grid file into Voxler so that the Z values are imported as zeros and the actual Z values are assigned to the C component value, allowing for XYZC data to be imported into Voxler.

5. The data module BoulderColorado.grd is displayed in the Network Manager. Right-click on the data module and select Graphics Output | HeightField.

6. Select the BoulderColorado.grd module in the Network Manager to display the properties in the Property Manager. Click the button to see the data that was imported into Voxler.

7. In the Lattice View dialog, click the Show: Z Coordinate on the left side. The Z values are all zeros. Click the Show: Component 1 on the left side. The C values are the grid file Z values. In order to properly display the elevation values, a scale factor has been added in the HeightField by default. Click the X button to close the Lattice View dialog.

8. Select the HeightField module in the Network Manager to display the properties in the Property Manager. Notice that the scale is set to 0.25. Change the Scale to 0 and the grid file is displayed as a flat surface, because the Z values are actually zeros.

9. Change the Colormap to Rainbow.

Using the Import as Uniform Lattice (default) option imports the
grid file Z values as zeros and the Z values as the component. This is
easy to see when the Scale Factor is set to zero.

Method 2

In the second method, you will import a Surfer grid file .GRD at correct height, add a HeightField module, and manually adjust the HeightField properties.

1. Click the File | Import command.

2. In the Import dialog, select the sample grid file BoulderColorado.grd from the Voxler 4 Samples folder (located at: C:\Program Files\Golden Software\Voxler 4\Samples) and click the Open button.

3. In the Lattice Import Options dialog, select the Import as curvilinear lattice option. Check the Use component minimum option. Click the OK button.

4. The data module BoulderColorado.grd 2 is displayed in the Network Manager. Right-click on the data module and select Graphics Output | HeightField.

5. Select the BoulderColorado.grd module in the Network Manager to display the properties in the Property Manager. Click the button to see the data that was imported into Voxler.

6. In the Lattice View dialog, click the Show: Z Coordinate on the left side. The Z values are all the Z data values from the grid file. Click the Show: Component 1 on the left side. The C values are the grid file Z values. This allows the Z values to be properly display the elevation values with no scale factor. Click the X button to close the Lattice View dialog.

7. Click on the HeightField 2 module in the Network Manager. In the Property Manager, change the Colormap to Rainbow.

Using the Import as Curvilinear Lattice option imports the grid file
Z values both as Z values and as the component. This is
easy to see when the Scale is set to zero.

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