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Merge pull request #436 from GIScience/filter-geometries
[oshdb-filter] add additional geometry based filters
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35 changes: 35 additions & 0 deletions
35
oshdb-filter/src/main/java/org/heigit/ohsome/oshdb/filter/GeometryFilterInnerRings.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,35 @@ | ||
| package org.heigit.ohsome.oshdb.filter; | ||
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| import javax.annotation.Nonnull; | ||
| import org.locationtech.jts.geom.Geometry; | ||
| import org.locationtech.jts.geom.MultiPolygon; | ||
| import org.locationtech.jts.geom.Polygon; | ||
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| /** | ||
| * A filter which checks the number of inner rings of a multipolygon relation. | ||
| */ | ||
| public class GeometryFilterInnerRings extends GeometryFilter { | ||
| /** | ||
| * Creates a new inner rings filter object. | ||
| * | ||
| * @param range the allowed range (inclusive) of values to pass the filter | ||
| */ | ||
| public GeometryFilterInnerRings(@Nonnull ValueRange range) { | ||
| super(range, GeometryMetricEvaluator.fromLambda(GeometryFilterInnerRings::countInnerRings, | ||
| "geometry.inners")); | ||
| } | ||
|
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| private static int countInnerRings(Geometry geometry) { | ||
| if (geometry instanceof Polygon) { | ||
| return ((Polygon) geometry).getNumInteriorRing(); | ||
| } else if (geometry instanceof MultiPolygon) { | ||
| var counter = 0; | ||
| for (var i = 0; i < geometry.getNumGeometries(); i++) { | ||
| counter += ((Polygon) geometry.getGeometryN(i)).getNumInteriorRing(); | ||
| } | ||
| return counter; | ||
| } else { | ||
| return -1; | ||
| } | ||
| } | ||
| } |
20 changes: 20 additions & 0 deletions
20
oshdb-filter/src/main/java/org/heigit/ohsome/oshdb/filter/GeometryFilterOuterRings.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,20 @@ | ||
| package org.heigit.ohsome.oshdb.filter; | ||
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| import javax.annotation.Nonnull; | ||
| import org.locationtech.jts.geom.Polygonal; | ||
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| /** | ||
| * A filter which checks the number of outer rings of a multipolygon relation. | ||
| */ | ||
| public class GeometryFilterOuterRings extends GeometryFilter { | ||
| /** | ||
| * Creates a new outer rings filter object. | ||
| * | ||
| * @param range the allowed range (inclusive) of values to pass the filter | ||
| */ | ||
| public GeometryFilterOuterRings(@Nonnull ValueRange range) { | ||
| super(range, GeometryMetricEvaluator.fromLambda(geometry -> | ||
| geometry instanceof Polygonal ? geometry.getNumGeometries() : -1, | ||
| "geometry.outers")); | ||
| } | ||
| } |
25 changes: 25 additions & 0 deletions
25
oshdb-filter/src/main/java/org/heigit/ohsome/oshdb/filter/GeometryFilterPerimeter.java
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| @@ -0,0 +1,25 @@ | ||
| package org.heigit.ohsome.oshdb.filter; | ||
|
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| import javax.annotation.Nonnull; | ||
| import org.heigit.ohsome.oshdb.util.geometry.Geo; | ||
| import org.locationtech.jts.geom.Polygonal; | ||
|
|
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| /** | ||
| * A filter which checks the perimeter of polygonal OSM feature geometries. | ||
| */ | ||
| public class GeometryFilterPerimeter extends GeometryFilter { | ||
| /** | ||
| * Creates a new perimeter filter object. | ||
| * | ||
| * @param range the allowed range (inclusive) of values to pass the filter | ||
| */ | ||
| public GeometryFilterPerimeter(@Nonnull ValueRange range) { | ||
| super(range, GeometryMetricEvaluator.fromLambda(geometry -> { | ||
| if (!(geometry instanceof Polygonal)) { | ||
| return 0; | ||
| } | ||
| var boundary = geometry.getBoundary(); | ||
| return Geo.lengthOf(boundary); | ||
| }, "perimeter")); | ||
| } | ||
| } |
21 changes: 21 additions & 0 deletions
21
oshdb-filter/src/main/java/org/heigit/ohsome/oshdb/filter/GeometryFilterRoundness.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,21 @@ | ||
| package org.heigit.ohsome.oshdb.filter; | ||
|
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| import javax.annotation.Nonnull; | ||
| import org.heigit.ohsome.oshdb.util.geometry.Geo; | ||
|
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| /** | ||
| * A filter which checks the roundness of polygonal OSM feature geometries. | ||
| * | ||
| * <p>Uses the Polsby-Popper test score, see | ||
| * <a href="https://en.wikipedia.org/wiki/Polsby%E2%80%93Popper_test">wikipedia</a> for details.</p> | ||
| */ | ||
| public class GeometryFilterRoundness extends GeometryFilter { | ||
| /** | ||
| * Creates a new "roundness" filter object. | ||
| * | ||
| * @param range the allowed range (inclusive) of values to pass the filter | ||
| */ | ||
| public GeometryFilterRoundness(@Nonnull ValueRange range) { | ||
| super(range, GeometryMetricEvaluator.fromLambda(Geo::roundness, "geometry.roundness")); | ||
| } | ||
| } |
23 changes: 23 additions & 0 deletions
23
oshdb-filter/src/main/java/org/heigit/ohsome/oshdb/filter/GeometryFilterSquareness.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,23 @@ | ||
| package org.heigit.ohsome.oshdb.filter; | ||
|
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| import javax.annotation.Nonnull; | ||
| import org.heigit.ohsome.oshdb.util.geometry.Geo; | ||
|
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| /** | ||
| * A filter which checks the squareness of OSM feature geometries. | ||
| * | ||
| * <p>For the measure for the rectilinearity (or squareness) of a geometry, a methods adapted from the | ||
| * paper "A Rectilinearity Measurement for Polygons" by Joviša Žunić and Paul L. Rosin | ||
| * (DOI:10.1007/3-540-47967-8_50, https://link.springer.com/chapter/10.1007%2F3-540-47967-8_50, | ||
| * https://www.researchgate.net/publication/221304067_A_Rectilinearity_Measurement_for_Polygons) is used.</p> | ||
| */ | ||
| public class GeometryFilterSquareness extends GeometryFilter { | ||
| /** | ||
| * Creates a new squareness filter object. | ||
| * | ||
| * @param range the allowed range (inclusive) of values to pass the filter | ||
| */ | ||
| public GeometryFilterSquareness(@Nonnull ValueRange range) { | ||
| super(range, GeometryMetricEvaluator.fromLambda(Geo::squareness, "squareness")); | ||
| } | ||
| } |
13 changes: 13 additions & 0 deletions
13
oshdb-filter/src/main/java/org/heigit/ohsome/oshdb/filter/GeometryFilterVertices.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,13 @@ | ||
| package org.heigit.ohsome.oshdb.filter; | ||
|
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| import javax.annotation.Nonnull; | ||
| import org.locationtech.jts.geom.Geometry; | ||
|
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| /** | ||
| * A filter which checks the number of vertices of OSM feature geometries. | ||
| */ | ||
| public class GeometryFilterVertices extends GeometryFilter { | ||
| public GeometryFilterVertices(@Nonnull ValueRange range) { | ||
| super(range, GeometryMetricEvaluator.fromLambda(Geometry::getNumPoints, "geometry.vertices")); | ||
| } | ||
| } |
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