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What are the parameters of a geoprocessing tool?
A geoprocessing tool has a fixed set of parameters that provide the tool with the information required for execution. Tools usually have input parameters that define the dataset or datasets that are typically used to generate new output data. Parameters have several important properties:
How are geoprocessing tools organized in ArcPy?
Geoprocessing tools are organized in two ways. All tools are available as functions on ArcPy but are also available in modules matching the toolbox alias name. Although most of the examples in the help show tools organized as functions available from ArcPy, both approaches are equally valid.
When do you use spatial reference in a geodataset?
If the output is a stand-alone geodataset (not inside a feature dataset), the spatial reference properties are the same as the input geodataset’s spatial reference properties. If the input is a layer in a display, that spatial reference of the layer’s data source is used.
How to use derived types in Python geoprocessing?
Derived types are always output parameters. import arcpy import types arcpy.env.workspace = “c:/base/data.gdb” # Many geoprocessing tools return a result object of the derived output dataset. result = arcpy.GetCount_management(“roads”) result_value = result[0] # The result object’s getOutput method returns values as a unicode string.
A geoprocessing tool has a fixed set of parameters that provide the tool with the information required for execution. Tools usually have input parameters that define the dataset or datasets that are typically used to generate new output data.
What are the data types of tool parameters?
Every tool parameter has an associated data type that defines the contents of the variable. Some simple data types are string (any set of alphanumeric characters), Boolean (a true/false value), and long (an integer value between -2,147,483,648 and 2,147,483,647).
Are there any spatial analyst tools in ArcPy?
Spatial Analyst and Image Analyst tools are handled differently to accommodate Map Algebra, and they are available only in the arcpy.sa and arcpy.ia modules and not as functions on ArcPy. Feedback on this topic?