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| author | Even Rouault <even.rouault@spatialys.com> | 2019-12-29 15:11:22 +0100 |
|---|---|---|
| committer | Even Rouault <even.rouault@spatialys.com> | 2019-12-29 15:11:22 +0100 |
| commit | 686e5f9063b5d31e350c4f1a3ea6af2656d76fbc (patch) | |
| tree | f797be92f1393d1e7e88ad02aaed8cd15e93add1 | |
| parent | 4f48088f379f506418d6e3fcd5fcdf5d14504f05 (diff) | |
| download | PROJ-data-686e5f9063b5d31e350c4f1a3ea6af2656d76fbc.tar.gz PROJ-data-686e5f9063b5d31e350c4f1a3ea6af2656d76fbc.zip | |
files.geojson: improve generation of polygon outline for NTv2-like files
| -rw-r--r-- | files.geojson | 460 | ||||
| -rw-r--r-- | regenerate_index_html.py | 60 |
2 files changed, 268 insertions, 252 deletions
diff --git a/files.geojson b/files.geojson index 8d8f1de..9642b6c 100644 --- a/files.geojson +++ b/files.geojson @@ -2,235 +2,235 @@ "type": "FeatureCollection", "name": "files", "features": [ -{ "type": "Feature", "properties": { "url": "https:\/\/cdn.proj.org\/AT_GIS_GRID.tif", "name": "AT_GIS_GRID.tif", "area_of_use": "Austria", "type": "HORIZONTAL_OFFSET", "source_crs_code": "EPSG:4312", "source_crs_name": "MGI", "target_crs_code": "EPSG:4258", "target_crs_name": "ETRS89", "source": "Austria Bundesamt für Eich- und Vermessungswessen", "source_country": "Austria", "source_id": "at_bev", "source_url": "http:\/\/www.bev.gv.at\/portal\/page?_pageid=713,2157075&_dad=portal&_schema=PORTAL", "description": "MGI (EPSG:4312) to ETRS89 (EPSG:4258)" }, "geometry": { "type": "Polygon", "coordinates": [ [ [ 9.5, 46.35 ], [ 9.5, 49.05 ], [ 17.1625, 49.05 ], [ 17.1625, 46.35 ], [ 9.5, 46.35 ] ] ] } }, -{ "type": "Feature", "properties": { "url": "https:\/\/cdn.proj.org\/AUSGeoid09_V1.01.tif", "name": "AUSGeoid09_V1.01.tif", "area_of_use": "Australia", "type": "VERTICAL_OFFSET_GEOGRAPHIC_TO_VERTICAL", "source_crs_code": "EPSG:4939", "source_crs_name": "GDA94", "target_crs_code": "EPSG:5711", "target_crs_name": "AHD height", "source": "Geoscience Australia", "source_country": "Australia", "source_id": "au_ga", "source_url": "http:\/\/www.ga.gov.au", "description": "GDA94 (EPSG:4939) to AHD height (EPSG:5711)" }, "geometry": { "type": "Polygon", "coordinates": [ [ [ 108.0, -45.983333333331174 ], [ 108.0, -8.0 ], [ 159.983333333330393, -8.0 ], [ 159.983333333330393, -45.983333333331174 ], [ 108.0, -45.983333333331174 ] ] ] } }, -{ "type": "Feature", "properties": { "url": "https:\/\/cdn.proj.org\/AUSGeoid2020_20180201.tif", "name": "AUSGeoid2020_20180201.tif", "area_of_use": "Australia", "type": "VERTICAL_OFFSET_GEOGRAPHIC_TO_VERTICAL", "source_crs_code": "EPSG:7843", "source_crs_name": "GDA2020", "target_crs_code": "EPSG:5711", "target_crs_name": "AHD height", "source": "Geoscience Australia", "source_country": "Australia", "source_id": "au_ga", "source_url": "http:\/\/www.ga.gov.au", "description": "GDA2020 (EPSG:7843) to AHD height (EPSG:5711)", "full_bbox": [ 93.0, -60.983333333330336, 173.98333333332874, -8.0 ] }, "geometry": { "type": "Polygon", "coordinates": [ [ [ 96.76, -43.7 ], [ 96.76, -9.86 ], [ 153.69, -9.86 ], [ 153.69, -43.7 ], [ 96.76, -43.7 ] ] ] } }, -{ "type": "Feature", "properties": { "url": "https:\/\/cdn.proj.org\/AUSGeoid98.tif", "name": "AUSGeoid98.tif", "area_of_use": "Australia", "type": "VERTICAL_OFFSET_GEOGRAPHIC_TO_VERTICAL", "source_crs_code": "EPSG:4939", "source_crs_name": "GDA94", "target_crs_code": "EPSG:5711", "target_crs_name": "AHD height", "source": "Geoscience Australia", "source_country": "Australia", "source_id": "au_ga", "source_url": "http:\/\/www.ga.gov.au", "description": "GDA94 (EPSG:4939) to AHD height (EPSG:5711)" }, "geometry": { "type": "Polygon", "coordinates": [ [ [ 108.0, -45.99999999999784 ], [ 108.0, -8.0 ], [ 159.999999999997044, -8.0 ], [ 159.999999999997044, -45.99999999999784 ], [ 108.0, -45.99999999999784 ] ] ] } }, -{ "type": "Feature", "properties": { "url": "https:\/\/cdn.proj.org\/A66_National_13_09_01.tif", "name": "A66_National_13_09_01.tif", "area_of_use": "Australia", "type": "HORIZONTAL_OFFSET", "source_crs_code": "EPSG:4202", "source_crs_name": "AGD66", "target_crs_code": "EPSG:4283", "target_crs_name": "GDA94", "source": "Australian Intergovernmental Committee on Surveying and Mapping", "source_country": "Australia", "source_id": "au_icsm", "source_url": "https:\/\/github.com\/icsm-au\/transformation_grids", "description": "AGD66 (EPSG:4202) to GDA94 (EPSG:4283)" }, "geometry": { "type": "Polygon", "coordinates": [ [ [ 104.0, -48.15 ], [ 104.0, -8.55 ], [ 164.0, -8.55 ], [ 164.0, -48.15 ], [ 104.0, -48.15 ] ] ] } }, -{ "type": "Feature", "properties": { "url": "https:\/\/cdn.proj.org\/GDA94_GDA2020_conformal.tif", "name": "GDA94_GDA2020_conformal.tif", 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Surveying and Mapping", "source_country": "Australia", "source_id": "au_icsm", "source_url": "https:\/\/github.com\/icsm-au\/transformation_grids", "description": "GDA94 (EPSG:4283) to GDA2020 (EPSG:7844)" }, "geometry": { "type": "Polygon", "coordinates": [ [ [ 112.4, -44.55 ], [ 112.4, -8.7 ], [ 154.1, -8.7 ], [ 154.1, -44.55 ], [ 112.4, -44.55 ] ] ] } }, -{ "type": "Feature", "properties": { "url": "https:\/\/cdn.proj.org\/GDA94_GDA2020_conformal_christmas_island.tif", "name": "GDA94_GDA2020_conformal_christmas_island.tif", "area_of_use": "Australia - Christmas Island", "type": "HORIZONTAL_OFFSET", "source_crs_code": "EPSG:4283", "source_crs_name": "GDA94", "target_crs_code": "EPSG:7844", "target_crs_name": "GDA2020", "source": "Australian Intergovernmental Committee on Surveying and Mapping", "source_country": "Australia", "source_id": "au_icsm", "source_url": "https:\/\/github.com\/icsm-au\/transformation_grids", "description": "GDA94 (EPSG:4283) to GDA2020 (EPSG:7844)" }, 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Idaho and Montana West", "type": "HORIZONTAL_OFFSET", "source_crs_code": "EPSG:4269", "source_crs_name": "NAD83", "target_crs_code": "EPSG:4152", "target_crs_name": "NAD83(HARN)", "source": "US National Oceanographic and Atmospheric Administration (NOAA)", "source_country": "USA", "source_id": "us_noaa", "source_url": "https:\/\/www.ngs.noaa.gov\/", "description": "NAD83 (EPSG:4269) to NAD83(HARN) (EPSG:4152)" }, "geometry": { "type": "Polygon", "coordinates": [ [ [ -119.0, 41.0 ], [ -109.0, 41.0 ], [ -109.0, 50.0 ], [ -119.0, 50.0 ], [ -119.0, 41.0 ] ] ] } }, +{ "type": "Feature", "properties": { "url": "https:\/\/cdn.proj.org\/wohpgn.tif", "name": "wohpgn.tif", "area_of_use": "USA - Washington and Oregon", "type": "HORIZONTAL_OFFSET", "source_crs_code": "EPSG:4269", "source_crs_name": "NAD83", "target_crs_code": "EPSG:4152", "target_crs_name": "NAD83(HARN)", "source": "US National Oceanographic and Atmospheric Administration (NOAA)", "source_country": "USA", "source_id": "us_noaa", 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"type": "Feature", "properties": { "url": "https:\/\/cdn.proj.org\/wthpgn.tif", "name": "wthpgn.tif", "area_of_use": "USA - Texas - West", "type": "HORIZONTAL_OFFSET", "source_crs_code": "EPSG:4269", "source_crs_name": "NAD83", "target_crs_code": "EPSG:4152", "target_crs_name": "NAD83(HARN)", "source": "US National Oceanographic and Atmospheric Administration (NOAA)", "source_country": "USA", "source_id": "us_noaa", "source_url": "https:\/\/www.ngs.noaa.gov\/", "description": "NAD83 (EPSG:4269) to NAD83(HARN) (EPSG:4152)" }, "geometry": { "type": "Polygon", "coordinates": [ [ [ -107.0, 25.0 ], [ -99.0, 25.0 ], [ -99.0, 37.0 ], [ -107.0, 37.0 ], [ -107.0, 25.0 ] ] ] } }, +{ "type": "Feature", "properties": { "url": "https:\/\/cdn.proj.org\/wvhpgn.tif", "name": "wvhpgn.tif", "area_of_use": "USA - West Virginia", "type": "HORIZONTAL_OFFSET", "source_crs_code": "EPSG:4269", "source_crs_name": "NAD83", "target_crs_code": "EPSG:4152", "target_crs_name": "NAD83(HARN)", "source": "US National Oceanographic and Atmospheric Administration (NOAA)", "source_country": "USA", "source_id": "us_noaa", "source_url": "https:\/\/www.ngs.noaa.gov\/", "description": "NAD83 (EPSG:4269) to NAD83(HARN) (EPSG:4152)" }, "geometry": { "type": "Polygon", "coordinates": [ [ [ -84.0, 36.0 ], [ -76.75, 36.0 ], [ -76.75, 41.0 ], [ -84.0, 41.0 ], [ -84.0, 36.0 ] ] ] } }, +{ "type": "Feature", "properties": { "url": "https:\/\/cdn.proj.org\/wyhpgn.tif", "name": "wyhpgn.tif", "area_of_use": "USA - Wyoming", "type": "HORIZONTAL_OFFSET", "source_crs_code": "EPSG:4269", "source_crs_name": "NAD83", "target_crs_code": "EPSG:4152", "target_crs_name": "NAD83(HARN)", "source": "US National Oceanographic and Atmospheric Administration (NOAA)", "source_country": "USA", "source_id": "us_noaa", "source_url": "https:\/\/www.ngs.noaa.gov\/", "description": "NAD83 (EPSG:4269) to NAD83(HARN) (EPSG:4152)" }, "geometry": { "type": "Polygon", "coordinates": [ [ [ -111.5, 40.5 ], [ -103.5, 40.5 ], [ -103.5, 45.5 ], [ -111.5, 45.5 ], [ -111.5, 40.5 ] ] ] } } ] } diff --git a/regenerate_index_html.py b/regenerate_index_html.py index fc994e3..867620f 100644 --- a/regenerate_index_html.py +++ b/regenerate_index_html.py @@ -29,7 +29,10 @@ for dirname in glob.glob('*'): dirnames.append(dirname) gj_ds = ogr.GetDriverByName('GeoJSON').CreateDataSource('files.geojson') -lyr = gj_ds.CreateLayer('files') +sr = osr.SpatialReference() +sr.SetAxisMappingStrategy(osr.OAMS_TRADITIONAL_GIS_ORDER) +sr.ImportFromEPSG(4326) +lyr = gj_ds.CreateLayer('files', srs = sr, options = ['RFC7946=YES']) lyr.CreateField(ogr.FieldDefn('url', ogr.OFTString)) lyr.CreateField(ogr.FieldDefn('name', ogr.OFTString)) lyr.CreateField(ogr.FieldDefn('area_of_use', ogr.OFTString)) @@ -139,8 +142,33 @@ for dirname in sorted(dirnames): else: assert False + def normalize_lon(xmin, xmax): + if xmin > 180: + xmin -= 360 + xmax -= 360 + elif xmax < -180: + xmin += 360 + xmax += 360 + return xmin, xmax + + xmin, xmax = normalize_lon(xmin, xmax) + + def polygon_from_bbox(xmin, ymin, xmax, ymax): + geom = ogr.Geometry(ogr.wkbPolygon) + ring = ogr.Geometry(ogr.wkbLinearRing) + # Add small epsilon to help unioning polygons touching by edge + eps = 1e-12 + ring.AddPoint_2D(xmin-eps, ymin-eps) + ring.AddPoint_2D(xmin-eps, ymax+eps) + ring.AddPoint_2D(xmax+eps, ymax+eps) + ring.AddPoint_2D(xmax+eps, ymin+eps) + ring.AddPoint_2D(xmin-eps, ymin-eps) + geom.AddGeometry(ring) + return geom + subds_list = ds.GetSubDatasets() if subds_list: + geom = None for subds_name, _ in subds_list: ds = gdal.Open(subds_name) gt = ds.GetGeoTransform() @@ -148,18 +176,17 @@ for dirname in sorted(dirnames): ymax_subds = gt[3] + 0.5 * gt[5] xmax_subds = xmin_subds + gt[1] * (ds.RasterXSize - 1) ymin_subds = ymax_subds + gt[5] * (ds.RasterYSize - 1) + xmin_subds, xmax_subds = normalize_lon(xmin_subds, xmax_subds) xmin = min(xmin, xmin_subds) ymin = min(ymin, ymin_subds) xmax = max(xmax, xmax_subds) ymax = max(ymax, ymax_subds) - - # Normalize longitudes - if xmin > 180: - xmin -= 360 - xmax -= 360 - elif xmax < -180: - xmin += 360 - xmax += 360 + if geom: + geom = geom.Union(polygon_from_bbox(xmin_subds, ymin_subds, xmax_subds, ymax_subds)) + else: + geom = polygon_from_bbox(xmin_subds, ymin_subds, xmax_subds, ymax_subds) + else: + geom = polygon_from_bbox(xmin, ymin, xmax, ymax) # Enforce stricter EPSG based bbox limitation for a few files if f in files_dict: @@ -169,19 +196,8 @@ for dirname in sorted(dirnames): assert xmax > bbox_xmin assert ymax > bbox_ymin feat['full_bbox'] = [xmin, ymin, xmax, ymax] - xmin = max(xmin, bbox_xmin) - ymin = max(ymin, bbox_ymin) - xmax = min(xmax, bbox_xmax) - ymax = min(ymax, bbox_ymax) - - geom = ogr.Geometry(ogr.wkbPolygon) - ring = ogr.Geometry(ogr.wkbLinearRing) - ring.AddPoint_2D(xmin, ymin) - ring.AddPoint_2D(xmin, ymax) - ring.AddPoint_2D(xmax, ymax) - ring.AddPoint_2D(xmax, ymin) - ring.AddPoint_2D(xmin, ymin) - geom.AddGeometry(ring) + geom = geom.Intersection(polygon_from_bbox(bbox_xmin, bbox_ymin, bbox_xmax, bbox_ymax)) + feat.SetGeometry(geom) lyr.CreateFeature(feat) |