[SEDONA-631] Add ST_Expand #1527
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| processEnvelope(geom); | ||
| } | ||
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| private void processEnvelope(Geometry geom) { |
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Why is this so complicated? You can see how existing approach read the coordinates https://github.com/apache/sedona/blob/master/common/src/main/java/org/apache/sedona/common/Functions.java#L495
| minY = Math.min(minY, coordinates[i].y); | ||
| maxY = Math.max(maxY, coordinates[i].y); | ||
| minZ = Math.min(minZ, coordinates[i].z); | ||
| maxZ = Math.max(maxZ, coordinates[i].z); |
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When a Geometry does not have Z value, JTS will give NaN (https://locationtech.github.io/jts/javadoc/org/locationtech/jts/geom/Coordinate.html#getZ--). Does the Math comparison still work in this case?
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Yeah, it just returns a NaN, and I am skipping the Z values when Geometry doesn't have it. I don't see it being a problem.
| @@ -1216,6 +1216,38 @@ Output: | |||
| POLYGON ((0 0, 0 3, 1 3, 1 0, 0 0)) | |||
| ``` | |||
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| ## ST_Expand | |||
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| Introduction: Returns a geometry expanded from the bounding box of the input. The expansion can be specified in two ways: | |||
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Please say this only deal with X, Y, Z value.
If uniformDelta is used and the geometry has Z, all X, Y, Z will be expanded. If only deltaX and deltaY are specified, only X and Y will be expanded even if the geometry has Z
* feat: add ST_Expand * fix: snowflake tests * fix: simplify the implementation, remove BBox implementation * chore: undo changes in BBox * docs: add additional behavior details * add test to check preservation of SRID
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[SEDONA-XXX] my subject.What changes were proposed in this PR?
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