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@UML(identifier="CV_ContinousQuadrilateralGridCoverage", specification=ISO_19123) public interface ContinuousQuadrilateralGridCoverage
A continuous coverage that operates on a grid values matrix. The domain of a continuous quadrilateral grid coverage is the convex hull of the collection of grid points defined by the grid values matrix. Evaluation of a continuous quadrilateral grid coverage generates feature attribute values at direct positions within the convex hull of the grid points provided by the grid values matrix. The general idea is to extend the coverage to direct positions within the interior of each grid cell by interpolation from the grid points at the corners of the cell.
Method Summary | |
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Set |
evaluate(DirectPosition p,
Collection<String> list)
Returns a set of records of feature attribute values for the specified direct position. |
Set<GridValueCell> |
getElements()
Returns the set of grid value cells that provide the structure to support the evaluate operation. |
InterpolationMethod |
getInterpolationMethod()
Returns a code that identifies the interpolation method that shall be used to derive a feature attribute value at any direct position within the grid value cell. |
GridValuesMatrix |
getSource()
Provides the data for the evaluate operation. |
Set<GridValueCell> |
locate(DirectPosition p)
Returns the grid value cell that contains the specified direct position. |
GridValueCell |
locateCell(DirectPosition p)
Returns the grid value cell that contains the specified direct position. |
Methods inherited from interface ContinuousCoverage |
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evaluate, evaluateInverse, getInterpolationParameterTypes, select |
Methods inherited from interface Coverage |
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evaluate, evaluate, evaluate, evaluate, evaluate, evaluate, find, find, getCommonPointRule, getCoordinateReferenceSystem, getDimensionNames, getDomainElements, getDomainExtents, getEnvelope, getMetadataNames, getMetadataValue, getNumSampleDimensions, getRangeElements, getRangeType, getRenderableImage, getSampleDimension, getSources, list |
Method Detail |
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@UML(identifier="element", obligation=MANDATORY, specification=ISO_19123) Set<GridValueCell> getElements()
getElements
in interface ContinuousCoverage
@UML(identifier="interpolationType", obligation=MANDATORY, specification=ISO_19123) InterpolationMethod getInterpolationMethod()
getInterpolationMethod
in interface ContinuousCoverage
@UML(identifier="locate", obligation=MANDATORY, specification=ISO_19123) Set<GridValueCell> locate(DirectPosition p)
locate
in interface ContinuousCoverage
@Extension GridValueCell locateCell(DirectPosition p)
locate(p).iterator().next()
.
locateFirst
.@UML(identifier="evaluate", obligation=MANDATORY, specification=ISO_19123) Set evaluate(DirectPosition p, Collection<String> list)
NOTE: Nearest neighbour interpolation will return for any direct position within a grid value cell the record associated with the grid point value pair at the nearest corner of the grid value cell. In other words, a continuous grid coverage that uses nearest neighbour interpolation acts as a discrete surface coverage.
@UML(identifier="source", obligation=MANDATORY, specification=ISO_19123) GridValuesMatrix getSource()
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