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MapWindow 6.0 Modeler

By: Brian Marchionni

(Presented by Ted Dunsford)

Idaho State University

September 2009

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Brian Marchionni

From Montreal CanadaB.S. Computer ScienceM.S. GIS at ISU

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Design Structure

MapWindow 6 Architecture MapWindow Modeler Architecture

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Designing with Interfaces

• Skeleton for a class– All classes implementing interface are

interchangeable– Easily allows third party developers to extend

functionality

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ITool Interface

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IParameter Interface

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Functionality

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Calculate Areas Example

• Step 1: Add Data

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Double Click Calculate Areas

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Select input and output

This dialog is generated automatically based on the ITool.

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Dialog Layout

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Multiple Parameters

Null Value Not OK

Value OK

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Status View During Execution

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Results

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Tool Sources

• Direct Implementation of ITool interface

• Run-time generation of ITools using IToolProvider– Wrapped non-native code

• Data conversion, interoperability

– Web services

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Sample ITool Code/// <summary>/// A tool to generate IDW rasters from point data/// </summary>public class mwIDW : MapWindow.Tools.ITool{ /// <summary> /// A UniqueName Identifying this Tool, if another tool with /// the same UniqueName exists this tool will not be loaded /// </summary> string ITool.UniqueName { get { return ("MapWindow Inverse Distance Weighting"); }}

/// <summary> /// Returns the name of the tool /// </summary> string ITool.Name { get { return ("IDW"); }}

...}

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Existing GIS Modeling Env.

Scientific Workflow Models

• OpenMI

• STELLA

• Kepler

Geospatial Workflow Models

• Sextante

• ESRI Model Builder

• IDRISI Macro Modeler

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Comparison: stream delineation

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Comparison

Green is ArcGIS ModelBuilder, Purple is Sextante modeler and Blue MapWindow Modeler.

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Click To Launch Modeler

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Drag a Tool

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Set up Inputs & Outputs

Double Click

Set Inputs And Outputs

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Drag a Second Tool

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Previous Output is in list

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Steps Are Now Linked

Click To Run

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Save the Model For Later

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Thank you

Questions?