Importing Existing Layer(s)
You can import an existing polygon layer and define it as the Boundary Layer using this tool. Note that the existing boundary should contain the following attributes:
Table 21: Required Attributes for Defining Boundary Layer
Layer | Attributes | Data Type |
|---|---|---|
Existing Boundary Layer | Cell Type | Text (i.e.,Hexagonal) |
Resolution | Positive real numbers, preferably positive integers (Double) | |
Roughness | Zero and Positive real numbers (Double) | |
Seepage | Zero and Positive real numbers (Double) |
For details about the Boundary Layer Properties, check Appendix B.3 . You need to map these fields while importing. In case any field is missing or if you don’t have the required field(s), the tool will assign the required field(s) with the default values mentioned in Project Defaults for Boundary Layer .
The steps for importing an existing polygon layer as a boundary layer have been described below:
Fig.146: Define Boundary Layer Tool option
Fig.146: Define Boundary Layer Tool option
- In Define Boundary Layer Tool, click on Import to import an existing layer as the boundary layer. This action will open a new window.
Fig.147: Import Polygon Layer as Boundary Layer
Fig.147: Import Polygon Layer as Boundary Layer
- In the
Import Polygons to Boundary Layer
window, select the polygon layer from the available layers in the drop-down option (if the layers are already in the ArcMap TOC). Alternatively, browse your computer to select the desired layer(s). Then Clickadd button to add the layer in the table.
Fig.148: Mapping Fields of imported layer with Boundary Layer attributes
Fig.148: Mapping Fields of imported layer with Boundary Layer attributes
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In the Map Fields section, map the existing attributes of the imported layer to the required fields for the Boundary Layer. You can use the drop-down options in each cell to specify the targeted fields.
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After finalizing the mapping of fields, click on the Import button. An ‘Import’ confirmation message will appear, indicating the successful import of the layer into the Boundary Layer.
Fig.149: Confirmation of importing layer as Boundary Layer
Fig.149: Confirmation of importing layer as Boundary Layer
- After importing, all features of the layer will be listed in the Define Boundary Layer tool. You can edit and change the attributes or values of different field(s) using the “Edit Attributes” table. For further additions or geometric updates to any feature, you can draw new features or edit existing features by starting the Create/Edit Polygon option. A successful import of a layer or drawing a new feature will be appended to the table with the available features of the boundary layer.
Fig.150: Imported Features in Boundary Layer feature list
Fig.150: Imported Features in Boundary Layer feature list