Advanced GIS Functionality

Modified on Monday, 18 July 2011 08:39 AM by 156.75.200.64 Categorized as Uncategorized
The GIS Framework contains a number of GIS Functionality that is already supplied. Some of this functionality contains the ability to perform Measurements, Unit Conversions, ConvexHulls, and Geometry Encoding.

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==Measurements==
Measurements are supports two types of Measurements, planer and spherical.

=====MeasureManager=====
The class FDOT.GIS.Client.Domain.Measurement.MeasureManager automatically takes into account the spatial reference of the map and uses the correct type of measurement. The MeasureManager has a static method GetMeasureManager that returns an instance of the MeasureManager.

{| class="tablesorter"
! Name !! Type !! Description
|-
| GetMeasureManager(Unit unit,SquareUnit squareUnit) || MeasureManager || The method takes in the Unit and Square Unit that measurements will be outputted in.
|-
| GetPerimeter(DataContracts.IPolygon polygon) || double || Gets the perimeter from a polygon.
|-
| GetPolygonArea(DataContracts.IPolygon polygon) || double || Gets the area from a polygon.
|-
| GetPolyLineDistance(DataContracts.IPolyline polyline) || double || Gets the distance for a polyline.
|}

=====Example=====
(((@@var measureManager=MeasureManager.GetMeasureManager(Unit.Mile, SquareUnit.SquareMile);
measureManager.GetPolygonArea(polygon);
measureManager.GetPolyLineDistance(polygon);@@)))

==Unit Conversion==
The framework includes the ability to do a number of unit conversions.

=====UnitConversion=====
{| class="tablesorter"
! Name !! Type !! Description
|-
| ConvertUnit(Unit from, Unit to,double distance) || double || Converts distance unit from another.
|-
| ConvertSquareUnit(SquareUnit from,SquareUnit to,double distance) || double || Converts a square unit from another.
|}

=====Example=====
(((@@var converter = new UnitConversion();
var convertedMeasurement = converter.ConvertUnit(Unit.Mile, Unit.Feet, 5000);@@)))

==ConvexHull==
Find the convex hull of a point set in the plane.

{| class="tablesorter"
! Name !! Return Type !! Description
|-
| GetConvexhull(IEnumerable<IPoint> points) || [Geometry] || Creates a convex hull based on a list of points.
|}

=====Example=====
(((@@ConvexHull.Convexhull.GetConvexhull(points);@@)))

==Geometry Encoding==
The Framework contains the ability to Encode and Decode geometry to a string that has reduces the size. For more information about the about the algorithm see [http://code.google.com/apis/maps/documentation/utilities/polylinealgorithm.html|Google Encoded Polyline Algorithm].

(((@@GeometryEncoder.Encode(geometry.Points)@@)))

==See Also==
{incoming}
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GisFramework¶

Advanced GIS Functionality
