аЯрЁБс > ўџ $ ўџџџ џџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџ§џџџўџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџџR o o t E n t r y џџџџџџџџџџџџ ўџџџ џџџџџџџџџџџџ џџџџџџџџџџџџ џџџџџџџџџџџџ R o o t E n t r y џџџџџџџџ А ќЖcЩЧ% V e r s i o n џџџџ 8 C o n t e n t s џџџџџџџџџџџџ T o o l 0 џџџџџџџџџџџџ .> џџџџџџџџўџџџ§џџџ
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{82712657-FD03-4F68-A5E2-1D6A149A70A1}2004122015113900TRUE20070718134731This script extracts landcover from polygons and computes summary landcover information, including imperviousness. The input polygon(s) can be from a selected set or an entire layer, or they can be buffers of points. The tool will then calculate a series of summary fields indicating the types of landcover within those polygons. Imperviousness is also calculated if desired. Optionally, the tool can also compute the raw landcover class totals. The output is a geodatabase table with fields indicating the summary category in total hectares, acres, and percent of land area.The input landcover and imperviousness data are from MELCD 2004.The Spatial Analyst extension must be activated for this tool to work.C:\ArcGIS\desktop\ArcGIS\Help\gpThis is the output table where the summaries and classes will be stored. This must be a geodatabase table. The script will quit if this is not a geodatabase table.Checking this box will enable computation of landcover summary classes from MELCD 2004 in the output table.Checking this box will enable the computation of actual landcover classes from MELCD 2004.Checking this box will enable computation of imperviousness based on MELCD 2004.Checking this box will enable the analysis to occur based on polygon boundaries, such as watershed boundaries. A unique ID is used to assign the output landcover information to each polygon, the ID must be a number. A polygon layer and an ID field will need to be assigned below if this box is checked.Either this clipping method, or the point buffer method below, or both, must be enabled.This is the input polygon layer - typically a drainage divide or watershed layer. If a selection exists in this layer, then only the selected polygon(s) will be analyzed. If no selection exists in this layer, than all polygons will be analyzed.The unique field to distinguish the input polygons. If this field is not unique, then polygons with the same value will have their summary data combined.Character fields are supported, but only if they contain numbers. No characters are supported.Optionally, this tool can analyze a subset of the polgyons which consists of a buffer around hydrologic features. For instance instead of extracting landcover for the whole polygon, it could only extract landcover within 250m of a hydrologic feature (stream, river, or pond/lake) within the polygon.Checking this box "on" and setting a hydro buffer distance below will analyze the landcover/imperviousness based on a hydro subset.The hydro buffer distance.Checking this box will enable the analysis to occur based on circular buffers around a point layer, such as sample locations. A unique ID is used to assign the output landcover information to each sample point, the ID must be a number. A point layer, an ID field, and a buffer distance will need to be assigned below if this box is checked.Either this clipping method, or the polygon method above, or both, must be enabled.This is the input point layer - typically sample points. If a selection exists in this layer, then only the selected points will be buffered and analyzed. If no selection exists in this layer, than all points will be buffered and analyzed.The unique field to distinguish the input points. If this field is not unique, then points with the same value will have their summary data computed from their combined buffer.Character fields are supported, but only if they contain numbers. No characters are supported.The buffer distance for the point layer.Compute MELCD 2004 Landscape AnalysisMichael SmithMaine DEP GIS UnitSenior Database Analyst010State House Station 17AugustaME04333USAmichael.smith (at) maine.gov207 287 4292This script extracts landcover from polygons and computes summary landcover information, including imperviousness. The input polygon(s) can be from a selected set or an entire layer, or they can be buffers of points. The tool will then calculate a series of summary fields indicating the types of landcover within those polygons. Imperviousness is also calculated if desired. Optionally, the tool can also compute the raw landcover class totals. The output is a geodatabase table with fields indicating the summary category in total hectares, acres, and percent of land area. The Spatial Analyst extension MUST be activated for this to work.005landcoverimperviousnesswatershedNo restrictions are placed on using this tool. HOWEVER, you must know the limits of your input data. This tool uses the MELCD 2004 data, which have a time period of circa 2004, 5m pixel resolution, and thematic accuracy of 70%.ArcToolbox Tool
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keyword>imperviousnesswatershedNo restrictions are placed on using this tool. HOWEVER, you must know the limits of your input data. This tool uses the MELCD 2004 data, which have a time period of circa 2004, 5m pixel resolution, and thematic ac
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{99B6CE9E-A5F5-46FC-B746-7843E695ADEE}2007032417341700TRUE20070324173417D:\arcgis\desktop\ArcGIS\Help\gpDEP_Custom_ToolboxArcToolbox Toolbox
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