Data types are used in Spatial Modeler to pass data from one operator to another. The built-in data types can be found in the API documentation. It is recommended that you use the built-in, simple data types when possible, so that your operators can be chained with other, built-in Spatial Modeler operators; however, in creating custom operators you may find it necessary to pass complex data structures between operators. To do so you can create custom data types.
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