Martin Desruisseaux created SIS-485:
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Summary: Replace GridCoverage.evaluate(DirectPosition, …) method
Key: SIS-485
URL: https://issues.apache.org/jira/browse/SIS-485
Project: Spatial Information Systems
Issue Type: Task
Components: Features
Reporter: Martin Desruisseaux
Fix For: 1.1
The following method has been added in the {{GridCoverage}} class in the
development branch:
{code:java}
public double[] evaluate(final DirectPosition point, double[] buffer) throws
CannotEvaluateException;
{code}
However this method is inefficient if invoked for more than one point (which is
a typical scenario). It may trig many readings of small areas, construct many
times the same {{CoordinateOperation}}, _etc._ Furthermore it does not allow
users to control the interpolatipn method.
An alternative approach could be to define a separated {{Evaluator}} class with
methods for setting the interpolation types among other. All coordinates to
evaluate could be specified in advance, allowing {{Evaluator}} to perform only
one larger read operation instead than many small operations.
We may keep {{GridCoverage.evaluate}} as a convenience method when there is
really only one point to evaluate. But we would need to clarify at least the
policy regarding interpolation method.
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