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desruisseaux pushed a commit to branch geoapi-4.0
in repository https://gitbox.apache.org/repos/asf/sis.git
The following commit(s) were added to refs/heads/geoapi-4.0 by this push:
new a8a4a6f Bug fix: default accuracy needs to be divided by grid cell
size.
a8a4a6f is described below
commit a8a4a6f350f916c9fcf7ad258afdf7e6df9adf34
Author: Martin Desruisseaux <[email protected]>
AuthorDate: Mon Oct 15 09:20:22 2018 +0200
Bug fix: default accuracy needs to be divided by grid cell size.
---
.../main/java/org/apache/sis/internal/referencing/provider/NTv2.java | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git
a/core/sis-referencing/src/main/java/org/apache/sis/internal/referencing/provider/NTv2.java
b/core/sis-referencing/src/main/java/org/apache/sis/internal/referencing/provider/NTv2.java
index d4a6767..0003409 100644
---
a/core/sis-referencing/src/main/java/org/apache/sis/internal/referencing/provider/NTv2.java
+++
b/core/sis-referencing/src/main/java/org/apache/sis/internal/referencing/provider/NTv2.java
@@ -348,11 +348,12 @@ public final class NTv2 extends AbstractProvider {
* during inverse transformations. If we did not found that
information in the file, compute
* an arbitrary default accuracy.
*/
+ final double size = Math.max(dx, dy);
if (Double.isNaN(grid.accuracy)) {
- grid.accuracy =
Units.DEGREE.getConverterTo(unit).convert(Formulas.ANGULAR_TOLERANCE);
+ grid.accuracy =
Units.DEGREE.getConverterTo(unit).convert(Formulas.ANGULAR_TOLERANCE) / size;
}
header.keySet().retainAll(Arrays.asList(overviewKeys)); // Keep
only overview records.
- return DatumShiftGridCompressed.compress(grid, null, precision /
Math.max(dx, dy));
+ return DatumShiftGridCompressed.compress(grid, null, precision /
size);
}
/**
