Menu | Tools > Features > Contouring |
Pop-up | Contouring… (surface parent layer in Layers window) |
Contours are created using the elevation values of a dataset as displayed in a surface. Contours are created on a feature layer.
In order for the contouring command to be enabled, you must have a feature layer or a HOB file open. |
see Create Feature Layer.
The Contour Wizard dialog box is displayed.
At this step specify the input and output settings for the contours. The input is the attribute layer of the source surface that will be used as the height source for creating the contours.
The Contour generation method defines how the contour boundaries will be created. The options available in the drop‑down list are dependent on the selected source data.
• For an attribute layer without true position data, contour boundaries can only be generated using the outer edges of the grid cells. In this case, Grid will be the only option in the list.
• For an attribute band with true position data, contour boundaries can be created using either the true positions for the data, or the outer edges of the grid cells. In this case, True Position and Grid will both be available in the list.
Procedure
To create contours:
1. Create a feature layer, or open a HOB file.
2. From the Layers window, select the layer you want to contour.
3. Select the Contouring command.
4. Select a layer to use as the height source from the Attribute name list.
5. Select an option from the Contour generation method drop-down list.
The Output layer list displays feature layers or HOB file layers that can be used to store the contours.
6. Select a layer for storing the contours from the Output layer list.
7. Click Next.