Provides access to members that control the resolution of a spatial reference.
Product Availability
Available with ArcGIS Engine, ArcGIS Desktop, and ArcGIS Server.
Members
| Description | ||
|---|---|---|
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ConstructFromHorizon | Defines the XY resolution and domain extent of this spatial reference based on the extent of its horizon. Low precision SRs will have minimum resolution of 1/10mm in current units. |
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MResolution | The M, or measure, resolution of this spatial reference. |
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SetDefaultMResolution | Sets the m coordinate grid resolution to 1 mm for a low precision spatial reference or 1/10 mm for a high precision spatial reference. |
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SetDefaultXYResolution | defaults: PCS(hi): 1/10 mm; PCS(lo): 1 mm; GCS(hi): 1/10,000 arc-second; GCS(lo): 1/500 arc-second; UCS(hi): 1/10 mm (assumed); UCS(lo): 1 mm (assumed). |
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SetDefaultZResolution | Sets the z coordinate grid resolution to 1 mm for a low precision spatial reference or 1/10 mm for a high precision spatial reference. |
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XYResolution | The XY resolution (distance in SR units between distinguishable grid points) of this spatial reference. Reported in meters for PCS/UCS and degrees for GCS when bStandardUnits is true or in current units of SR when it is false. |
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ZResolution | The Z resolution (height/depth distance between distinguishable grid points) of this spatial reference. Reported in meters when bStandardUnits is true or in current units of SR when it is false. |
CoClasses that implement ISpatialReferenceResolution
| CoClasses and Classes | Description |
|---|---|
| GeographicCoordinateSystem | Creates a geographic coordinate system. |
| ProjectedCoordinateSystem | Creates a projected coordinate system. |
| UnknownCoordinateSystem | Creates an unknown coordinate system. |
Remarks
The ISpatialReferenceResolution interface is used to define default and custom grid origins, extents and resolutions for the XY, Z and M coordinate grids associated with a spatial reference. The terms resolution and precision are synonymous within the context of the spatial reference system and both refer to the inverse of the scale factor. Methods on this interface can define coordinate grid resolutions and extent based on a known spatial reference horizon, or alter extents and resolutions in a controlled way (for example, enlarge the extent about its current center by specifying a larger (coarser) target resolution).