Component Table (CMP)
Filename
dss_v3_REGION_cmp
Description
The Component Table describes each of the individual soil landscapes which comprise the polygon (i.e. the components of the polygon). Note that components apply to only to the land and wetland portion of the polygon.
Contents
| Field | Name | Type | Width | Description |
|---|---|---|---|---|
| 1 | POLY_ID | string | 12 | Polygon Identifier |
| 2 | CMP | integer | 2 | Component Number |
| 3 | PERCENT | integer | 3 | Percent of polygon occupied by the component |
| 4 | SLOPE_P | decimal | 5 | Slope Steepness |
| 5 | SLOPE_LEN | integer | 4 | Slope Length |
| 6 | STONINESS | string | 1 | Surface Stoniness Class |
| 7 | PROVINCE | string | 2 | Province Code |
| 8 | SOIL_CODE | string | 3 | Soil Code |
| 9 | MODIFIER | string | 5 | Soil Code Modifier |
| 10 | PROFILE | string | 1 | Type of soil profile |
| 11 | SOIL_ID | string | 11 | Soil Name Identifier |
| 12 | CMP_ID | string | 14 | Polygon Component Identifier |
Relationships
- A record in this file is unique with respect to POLY_ID & CMP.
- SOIL_ID is required to relate (N:1) to the SNT.
- CMP_ID is required to relate (1:1) to the CRT.
The proportion of the polygon occupied by each separate component is identified. However, their location within the polygon is not defined. While the data model does not restrict the number of components or the proportion of the polygon that they occupy, restrictions have been recommended from a subject matter/organization standpoint.
Note that the dominant component for some polygons will be a non-soil (e.g. ice or rock). Analyses involving dominant soil components should take this fact into account.