Martin Desruisseaux created SIS-610:
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Summary: GridDerivation.subgrid(…) should accept AOI with less
dimensions than the grid
Key: SIS-610
URL: https://issues.apache.org/jira/browse/SIS-610
Project: Spatial Information Systems
Issue Type: Improvement
Components: Coverage
Affects Versions: 1.4, 1.3, 1.2, 1.1, 1.0
Reporter: Martin Desruisseaux
Assignee: Martin Desruisseaux
When an Area Of Interest (AOI) is specified by a call to
{{GridGeometry.derive().subgrid(…)}}, the current implementation requires that
the AOI has at least as many dimensions as the original grid, because the
result of this operation is a grid having the number of dimensions of the
original grid. The problem is that we sometime have a two-dimensional only AOI
and nevertheless want to apply it to a three- or four-dimensional grid. Apache
SIS should be able to modify the {{GridGeometry}} only in the dimensions
specified by the AOI, and leave the other dimensions unchanged.
As a special case, SIS 1.5 accepts an AOI with less dimensions if all extra
dimensions have a number of cells equals to 1 (i.e., the grid is a slice). This
issue is about removing that restriction.
To reproduce (expected behavior is success, current behavior is
`OperationNotFoundException` between “WGS 84” and “WGS 84 + Ellipsoidal height
+…”):
{code:java}
private static void testMultidimensionalSlicing() throws Exception {
var sourceEnv = new GeneralEnvelope(CRS.compound(
CommonCRS.defaultGeographic(),
CommonCRS.Vertical.ELLIPSOIDAL.crs(),
CommonCRS.Temporal.JAVA.crs()
));
sourceEnv.setRange(0, 10, 20);
sourceEnv.setRange(1, 30, 40);
sourceEnv.setRange(2, 0, 2);
sourceEnv.setRange(3, 0, 2);
var sourceGrid = new GridGeometry(
new GridExtent(null, new long[4], new long[] { 2, 2, 2, 2 }, false),
sourceEnv,
GridOrientation.DISPLAY
);
var targetGrid = new GridGeometry(
new GridExtent(2, 2),
new Envelope2D(CommonCRS.defaultGeographic(), 10, 30, 10, 10),
GridOrientation.DISPLAY
);
var slice = sourceGrid.derive()
.subgrid(targetGrid)
.build();
}
{code}
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