WMS:Mapping Tables: Difference between revisions
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A '''mapping table''' or '''map table''' is used by WMS to link values within a project. There are multiple ways this can be accomplished: | A '''mapping table''' or '''map table''' is used by WMS to link values within a project. There are multiple ways this can be accomplished: | ||
*For distributed models, WMS assign model parameter values to grid cells by linking parameter values to index maps. See [[WMS:WMS Supported File Formats|File Formats]] for the different mapping parameters. The [https://gsshawiki.com/Mapping:Mapping_tables GSSHA Wiki] also discusses this. | *For distributed models, WMS assign model parameter values to grid cells by linking parameter values to index maps. See [[WMS:WMS Supported File Formats|File Formats]] for the different mapping parameters. The [https://gsshawiki.com/Mapping:Mapping_tables GSSHA Wiki] also discusses this. | ||
*For lumped parameter models, a lumped average (or area-weighted average) is created based on the percentages of land use values or soil types within a basin. A mapping table must be imported prior to computing the composite curve numbers. For a [[WMS:Land Use|land use]] or [[WMS:Soil|soil type coverage]], the mapping table may be set up interactively by selecting each polygon and assigning the appropriate parameters. The [[WMS:Compute GIS Attributes|''Compute GIS Attributes'' dialog]] then uses the mapping tables created using those coverages, or manually via a text file. | *For lumped parameter models, a lumped average (or area-weighted average) is created based on the percentages of land use values or soil types within a basin. A mapping table must be imported prior to computing the composite curve numbers. For a [[WMS:Land Use|land use]] or [[WMS:Soil Type Coverage|soil type coverage]], the mapping table may be set up interactively by selecting each polygon and assigning the appropriate parameters. The [[WMS:Compute GIS Attributes|''Compute GIS Attributes'' dialog]] then uses the mapping tables created using those coverages, or manually via a text file. | ||
==Related Topics== | ==Related Topics== | ||
Revision as of 21:58, 18 December 2019
A mapping table or map table is used by WMS to link values within a project. There are multiple ways this can be accomplished:
- For distributed models, WMS assign model parameter values to grid cells by linking parameter values to index maps. See File Formats for the different mapping parameters. The GSSHA Wiki also discusses this.
- For lumped parameter models, a lumped average (or area-weighted average) is created based on the percentages of land use values or soil types within a basin. A mapping table must be imported prior to computing the composite curve numbers. For a land use or soil type coverage, the mapping table may be set up interactively by selecting each polygon and assigning the appropriate parameters. The Compute GIS Attributes dialog then uses the mapping tables created using those coverages, or manually via a text file.
Related Topics
WMS – Watershed Modeling System | ||
|---|---|---|
| Modules: | Terrain Data • Drainage • Map • Hydrologic Modeling • River • GIS • 2D Grid • 2D Scatter |  |
| Models: | CE-QUAL-W2 • GSSHA • HEC-1 • HEC-HMS • HEC-RAS • HSPF • MODRAT • NSS • OC Hydrograph • OC Rational • Rational • River Tools • Storm Drain • SMPDBK • SWMM • TR-20 • TR-55 | |
| Toolbars: | Modules • Macros • Units • Digitize • Static Tools • Dynamic Tools • Drawing • Get Data Tools | |
| Aquaveo | ||
