Beispiel #1
0
        /// <summary>
        /// Spatial query using DotSpatial
        /// </summary>
        /// <param name="featureSet">FeatureSet</param>
        /// <param name="geometry">Spatial geometry</param>
        /// <returns>Selected features</returns>
        public static IFeatureSet SpatialQuery(IFeatureSet featureSet, IGeometry geometry)
        {
            List <IFeature> features = new List <IFeature>();

            for (int i = 0; i < featureSet.Features.Count; i++)
            {
                if (RelateOp.Relate(featureSet.Features[i].Geometry, geometry).IsIntersects())
                {
                    features.Add(featureSet.Features[i]);
                }
            }

            FeatureSet result = new FeatureSet(features);

            result.Projection = CloneableEM.Copy(featureSet.Projection);
            result.InvalidateEnvelope(); // the new set will likely have a different envelope bounds

            return(result);
        }