WMS:MODRAT Percent Impervious Land Use: Difference between revisions
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To compute the Percent Impervious for each sub-basin of your MODRAT model, you must read in a land use data layer. Land use data is generally stored in a GIS, the best way to read it into WMS is though a Shapefile. To import land use data for use with MODRAT, create a [[WMS:Land Use|Land Use Coverage]], then [[WMS:Importing Shapefiles|import the polygon file]] and ensure that the Percent Impervious field (often called IMPERV_ by the LACDPW) is assigned to LA County Soil land use field of WMS. Once the land use data is present in WMS, you can compute and assign % impervious using the '''[[WMS:Importing Shapefiles|Map Attributes]]''' command from the | To compute the Percent Impervious for each sub-basin of your MODRAT model, you must read in a land use data layer. Land use data is generally stored in a GIS, the best way to read it into WMS is though a Shapefile. To import land use data for use with MODRAT, create a [[WMS:Land Use|Land Use Coverage]], then [[WMS:Importing Shapefiles|import the polygon file]] and ensure that the ''Percent Impervious'' field (often called IMPERV_ by the LACDPW) is assigned to LA County Soil land use field of WMS. Once the land use data is present in WMS, you can compute and assign % impervious using the '''[[WMS:Importing Shapefiles|Map Attributes]]''' command from the ''MODRAT'' menu. | ||
Revision as of 18:48, 11 February 2013
To compute the Percent Impervious for each sub-basin of your MODRAT model, you must read in a land use data layer. Land use data is generally stored in a GIS, the best way to read it into WMS is though a Shapefile. To import land use data for use with MODRAT, create a Land Use Coverage, then import the polygon file and ensure that the Percent Impervious field (often called IMPERV_ by the LACDPW) is assigned to LA County Soil land use field of WMS. Once the land use data is present in WMS, you can compute and assign % impervious using the Map Attributes command from the MODRAT menu.
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