{"title":"Canada 500 m elevation bands","source":{"publisher":"NOAA National Centers for Environmental Information","title":"ETOPO 2022 — 500 m標高区分","brief":"元60秒格子（WGS84 / EGM2008）から500 m間隔の色面を作成。2022はモデルの版で、全地点の観測年ではありません。","catalogueUrl":"https://www.ncei.noaa.gov/products/etopo-global-relief-model","descriptionUrl":"https://www.ngdc.noaa.gov/mgg/global/relief/ETOPO2022/docs/1.2%20ETOPO%202022%20User%20Guide.pdf","licenceUrl":"https://www.ncei.noaa.gov/metadata/geoportal/rest/metadata/item/gov.noaa.ngdc.mgg.dem%3Aetopo_2022/html","licence":"CC0-1.0","attribution":"NOAA NCEI ETOPO 2022 (DOI:10.25921/fd45-gt74). Boundary: Statistics Canada, Open Government Licence — Canada. Lakes: Natural Earth v5.1.2, public domain."},"levels":[{"id":"below-sea","name":"0 m未満","color":"#e6e5e1","lowerBoundM":null,"upperBoundExclusiveM":0,"description":"原格子で0 m未満の値を別表示。海岸線と標高格子の解像度差を含むため、すべてを陸上の低地・窪地とは解釈しません。","sourceCellCount":9368,"displayPixelCount":41317,"outline":{"file":"elevation-outline-below-sea.geojson","bytes":2719028,"sha256":"f9fc4acb91d6b173de0b38603c772def49c68e980801e0f06a3266cad304b5a3"},"isolated":{"file":"elevation-only-below-sea.png","bytes":92755,"sha256":"5eafb7ccd2ee77cf51710b87a5302992706ac9c241cc944be2664e3b0446ad00"},"bounds":[[-140.966667,43.395667],[-52.616667,83.137004]],"displayRings":11987,"outlineVertices":70027,"nativeCellCentreMaskAreaKm2":12003.457284869464,"displayMaskAreaKm2":15599.376891747252,"areaDifferencePercent":29.957365795023883},{"id":"0","name":"0–500 m","color":"#f6eedf","lowerBoundM":0,"upperBoundExclusiveM":500,"description":"標高0 m以上500 m未満。淡い色はハドソン湾周辺や東部の低地、海岸沿いに広がります。五大湖からセントローレンス川へ続く低地と、西部山地の狭い海岸側を比べます。","sourceCellCount":4107226,"displayPixelCount":9986346,"outline":{"file":"elevation-outline-0.geojson","bytes":9689741,"sha256":"9ba39ecd195188b6125abfbc5ef4f5458ce13700c0a7aea8dc9767cd9bf598f3"},"isolated":{"file":"elevation-only-0.png","bytes":393805,"sha256":"d5c716afa297cab7e43da5900a0da5fb026d159b811b36ecd60ff0420e4b3522"},"bounds":[[-141.016667,41.738912],[-52.633333,83.129034]],"displayRings":18621,"outlineVertices":367323,"nativeCellCentreMaskAreaKm2":6564545.988980687,"displayMaskAreaKm2":6561167.163915748,"areaDifferencePercent":-0.05147081109053355},{"id":"500","name":"500–1,000 m","color":"#e9d6b6","lowerBoundM":500,"upperBoundExclusiveM":1000,"description":"標高500 m以上1,000 m未満。内陸のプレーリーにも西部山地にも現れる高さです。同じ標高でも、周囲の色の境界が広く離れた平原と、境界が集まる山地では起伏が違います。","sourceCellCount":1181856,"displayPixelCount":2885152,"outline":{"file":"elevation-outline-500.geojson","bytes":7827111,"sha256":"6a4db59af3a8b7fb50c6ebce078bb0990bdf16d084ac263448ef532a136635a7"},"isolated":{"file":"elevation-only-500.png","bytes":281951,"sha256":"e18d96d107b13c836d08a04d91c0a09796d31d50cc5d3a8da61e22bd8e431119"},"bounds":[[-141.016667,43.902117],[-56.666667,83.099064]],"displayRings":19013,"outlineVertices":275137,"nativeCellCentreMaskAreaKm2":1997977.9472896575,"displayMaskAreaKm2":1998127.06345976,"areaDifferencePercent":0.0074633541528714075},{"id":"1000","name":"1,000–1,500 m","color":"#d9b987","lowerBoundM":1000,"upperBoundExclusiveM":1500,"description":"標高1,000 m以上1,500 m未満。西部山地の東縁と内部の高地に注目します。山地の色と隣接する低い平原の色をたどると、山麓から内陸への高さの変化を読めます。","sourceCellCount":424248,"displayPixelCount":1145933,"outline":{"file":"elevation-outline-1000.geojson","bytes":6347921,"sha256":"b3759682922f5cb247a3ebcafae2373ef3169dba9ccb3b12e973ec9a82eef6af"},"isolated":{"file":"elevation-only-1000.png","bytes":186611,"sha256":"a0b46ccb06263a4b3304cd0bbbe436849eb75c7979083bfa8dbda511c8d3bfd8"},"bounds":[[-141.016667,45.255225],[-58.5,82.967683]],"displayRings":15649,"outlineVertices":218217,"nativeCellCentreMaskAreaKm2":671192.7921214624,"displayMaskAreaKm2":671424.5509374534,"areaDifferencePercent":0.0345293958325246},{"id":"1500","name":"1,500–2,000 m","color":"#c79b65","lowerBoundM":1500,"upperBoundExclusiveM":2000,"description":"標高1,500 m以上2,000 m未満。西部山地でまとまる色面に加え、北極圏の山地にも分布します。全域表示で、寒い北部がすべて低地というわけではないことを確かめます。","sourceCellCount":175481,"displayPixelCount":429612,"outline":{"file":"elevation-outline-1500.geojson","bytes":4131879,"sha256":"e2747cd83809a5cfe89d91cd686c1430fb37cb36d05be2f1d3c4a0ca7479072f"},"isolated":{"file":"elevation-only-1500.png","bytes":124597,"sha256":"09290f878999136b9d119e2fa06008eede2e2f324ba4a2a079fb391bf9218a14"},"bounds":[[-141.0,48.994822],[-63.466667,82.682567]],"displayRings":11290,"outlineVertices":136828,"nativeCellCentreMaskAreaKm2":295723.2241486123,"displayMaskAreaKm2":295731.7620634612,"areaDifferencePercent":0.0028871303136461814},{"id":"2000","name":"2,000–2,500 m","color":"#b3804d","lowerBoundM":2000,"upperBoundExclusiveM":2500,"description":"標高2,000 m以上2,500 m未満。西部の高い山地や北極圏の山地に見られます。周囲の低い区分を残して選ぶと、山脈の中で高い部分がどこに続くかを追えます。","sourceCellCount":31891,"displayPixelCount":56109,"outline":{"file":"elevation-outline-2000.geojson","bytes":1250486,"sha256":"4f130c1f3a4f5192d385d748c471794b4a4ee570102c75e0d855e80510f2eb25"},"isolated":{"file":"elevation-only-2000.png","bytes":64990,"sha256":"c889d865a3a3e06be5ad1fb670e09c91caa2de306df2dbbe25ca77c0c69b1ec7"},"bounds":[[-141.0,48.994822],[-65.15,82.399194]],"displayRings":3899,"outlineVertices":39301,"nativeCellCentreMaskAreaKm2":64267.64899525956,"displayMaskAreaKm2":64327.72921393411,"areaDifferencePercent":0.09348438851245533},{"id":"2500","name":"2,500–3,000 m","color":"#9e683b","lowerBoundM":2500,"upperBoundExclusiveM":3000,"description":"標高2,500 m以上3,000 m未満。高い山地の中でも分布が絞られます。地形タブの山地という地域区分と、この高さを満たす範囲が同一ではないことを読み分けます。","sourceCellCount":5013,"displayPixelCount":8946,"outline":{"file":"elevation-outline-2500.geojson","bytes":246790,"sha256":"eb6e7a97c748791e691a74cc0627b06d00c0c47f2e3e41bb95312dde40efea1b"},"isolated":{"file":"elevation-only-2500.png","bytes":45846,"sha256":"efe2db4785a5ad55206a18ce4b88d74b0b933bcb7ccb559fd4512afe32dbd41f"},"bounds":[[-141.0,49.732812],[-114.65,61.530742]],"displayRings":853,"outlineVertices":7403,"nativeCellCentreMaskAreaKm2":9781.773683979096,"displayMaskAreaKm2":9743.95598875656,"areaDifferencePercent":-0.3866138846012738},{"id":"3000","name":"3,000–3,500 m","color":"#87532f","lowerBoundM":3000,"upperBoundExclusiveM":3500,"description":"標高3,000 m以上3,500 m未満。西部の高い山地の一部です。小さな色面は元60秒格子による概略で、個々の山頂や登山道の正確な高さを示すものではありません。","sourceCellCount":577,"displayPixelCount":1159,"outline":{"file":"elevation-outline-3000.geojson","bytes":37918,"sha256":"b8c201f1c078487ceac0475b0e36b10317b5674ba4378b5b6c1c1678824609c3"},"isolated":{"file":"elevation-only-3000.png","bytes":41555,"sha256":"fe11b713a37581c60ed594865da1ca4e470b13a6189b5835925481c1a7977f00"},"bounds":[[-141.0,50.300342],[-116.216667,61.331508]],"displayRings":145,"outlineVertices":1071,"nativeCellCentreMaskAreaKm2":989.3410804604354,"displayMaskAreaKm2":987.4647484484749,"areaDifferencePercent":-0.18965471554938707},{"id":"3500","name":"3,500–4,000 m","color":"#72402b","lowerBoundM":3500,"upperBoundExclusiveM":4000,"description":"標高3,500 m以上4,000 m未満。西部の高峰周辺に限られる高さです。周囲の500 m区分を合わせて読むと、局地的に高い部分と、広く続く山地の違いが分かります。","sourceCellCount":179,"displayPixelCount":367,"outline":{"file":"elevation-outline-3500.geojson","bytes":15076,"sha256":"3cd1e18bc6c19f1539b57c0132f936aaf51e3a73ccfa469afce60560a0d87492"},"isolated":{"file":"elevation-only-3500.png","bytes":41018,"sha256":"f7364c015452ab45de885c41f938106920fd09c06e710a159d1a2baa173874ce"},"bounds":[[-140.983333,58.908544],[-137.433333,61.267484]],"displayRings":65,"outlineVertices":387,"nativeCellCentreMaskAreaKm2":300.27712377211907,"displayMaskAreaKm2":299.90067572724723,"areaDifferencePercent":-0.12536687448675682},{"id":"4000","name":"4,000–4,500 m","color":"#603027","lowerBoundM":4000,"upperBoundExclusiveM":4500,"description":"標高4,000 m以上4,500 m未満。北西部のアラスカとの国境付近にある高い山地の、ごく限られた部分です。「選択へ」で位置を確かめ、全域へ戻して国土に占める広がりを比べます。","sourceCellCount":92,"displayPixelCount":192,"outline":{"file":"elevation-outline-4000.geojson","bytes":6150,"sha256":"a991ee261bb3683d30567aa9ba171438eef4d10a1c6d0645fd0cf2abd5f81bac"},"isolated":{"file":"elevation-only-4000.png","bytes":40876,"sha256":"059092400fe284fe2284fdaabdac74503c981ddd6f206c5100b77cd8bff763e3"},"bounds":[[-141.0,60.299587],[-139.05,61.251458]],"displayRings":24,"outlineVertices":168,"nativeCellCentreMaskAreaKm2":154.23251596923637,"displayMaskAreaKm2":156.525842367354,"areaDifferencePercent":1.4869279566022555},{"id":"4500","name":"4,500–5,000 m","color":"#4e2522","lowerBoundM":4500,"upperBoundExclusiveM":5000,"description":"標高4,500 m以上5,000 m未満。北西部のアラスカとの国境付近にある高い山地の、ごく限られた部分です。「選択へ」で位置を確かめ、全域へ戻して国土に占める広がりを比べます。","sourceCellCount":36,"displayPixelCount":73,"outline":{"file":"elevation-outline-4500.geojson","bytes":3181,"sha256":"0c5d8ae637e30558e6f86e9a02961e4bdd873fca52f96c53165ef6a3b33b97b4"},"isolated":{"file":"elevation-only-4500.png","bytes":40784,"sha256":"9f379349922ede3468976a0a72ba25c5c529a757155705fbd566cb3252e7e411"},"bounds":[[-140.983333,60.291329],[-140.3,61.251458]],"displayRings":14,"outlineVertices":82,"nativeCellCentreMaskAreaKm2":60.67181802275302,"displayMaskAreaKm2":60.20391873852114,"areaDifferencePercent":-0.7711970721833533},{"id":"5000","name":"5,000–5,500 m","color":"#3e1b1c","lowerBoundM":5000,"upperBoundExclusiveM":5500,"description":"標高5,000 m以上5,500 m未満。北西部のアラスカとの国境付近にある高い山地の、ごく限られた部分です。「選択へ」で位置を確かめ、全域へ戻して国土に占める広がりを比べます。","sourceCellCount":28,"displayPixelCount":62,"outline":{"file":"elevation-outline-5000.geojson","bytes":1081,"sha256":"b248b53933b1a5b43bb99921b55c31bf176c2b82825621f59c58996111c82862"},"isolated":{"file":"elevation-only-5000.png","bytes":40733,"sha256":"4b6b23c14e96665e407853eda71d09fdc130eff08c91bf51a2a738e61eff23a9"},"bounds":[[-140.933333,60.291329],[-140.333333,60.636369]],"displayRings":4,"outlineVertices":30,"nativeCellCentreMaskAreaKm2":47.31624768692804,"displayMaskAreaKm2":51.443313687091916,"areaDifferencePercent":8.722301961624177},{"id":"5500","name":"5,500–6,000 m","color":"#2d1419","lowerBoundM":5500,"upperBoundExclusiveM":6000,"description":"標高5,500 m以上6,000 m未満。北西部のアラスカとの国境付近にある高い山地の、ごく限られた部分です。「選択へ」で位置を確かめ、全域へ戻して国土に占める広がりを比べます。","sourceCellCount":3,"displayPixelCount":9,"outline":{"file":"elevation-outline-5500.geojson","bytes":235,"sha256":"e4a762ef1ba06bb16fb92d00f12008aa68b2dc304658f6dc2e27f06bc832b884"},"isolated":{"file":"elevation-only-5500.png","bytes":40705,"sha256":"c179059cda8067cb4274402c0a6c5eeacde5fdbcd47809005e1dc6de3f4308c9"},"bounds":[[-140.45,60.562741],[-140.4,60.587302]],"displayRings":1,"outlineVertices":5,"nativeCellCentreMaskAreaKm2":5.073336379614732,"displayMaskAreaKm2":7.476532858101816,"areaDifferencePercent":47.36915313053975}],"sourceWindow":{"sourceSha256":"9d27d4b8ea8e76977e2988bca667d7c8fa68b927355feffcddd6b4875a7fd08e","sourceBytes":465969062,"file":"canada-etopo-window.f32","sha256":"779fbc97ee041d58ee09c87b6d5bbe07bd79d240cd01fc2328f22c562206526d","bytes":57657600,"width":5460,"height":2640,"bounds":[-142,40,-51,84],"window":[2280,360,7740,3000],"origin":[-142,84],"resolution":[0.016666666666666666,-0.016666666666666666],"dtype":"float32-little-endian","noData":-99999,"geoKeys":{"GTModelTypeGeoKey":2,"GTRasterTypeGeoKey":1,"GTCitationGeoKey":"WGS 84 + EGM2008 height","GeographicTypeGeoKey":4326,"VerticalCSTypeGeoKey":3855},"method":"GeoTIFF.js 3.0.5 exact native window read; no resampling or integer casting"},"landMask":{"file":"data-source/atlas/canada-climate-elevation-v1/beck/land-mask.geojson.gz","sha256":"f54908964f6e451137bb50b4a21fb0ada82fbaeea5c8438d3d204046a663644e"},"verification":{"landCells":5935998,"validLandCells":5935998,"missingLandCells":0,"negativeLandCells":9368,"minimumSourceM":-563.125,"maximumSourceM":5653.3212890625,"bandCellCountSum":5935998,"spots":[{"name":"Winnipeg","requestedLonLat":[-97.1384,49.8951],"nativeCentre":[-97.14166666666667,49.891666666666666],"sourceElevationM":232.10125732421875,"sourceRow":2046,"sourceColumn":2691,"insideLandMask":true,"expectedBand":"0","renderedBands":["0"],"expectedPaletteIndex":2,"renderedPaletteIndex":2},{"name":"Regina","requestedLonLat":[-104.6189,50.4452],"nativeCentre":[-104.625,50.44166666666667],"sourceElevationM":576.7361450195312,"sourceRow":2013,"sourceColumn":2242,"insideLandMask":true,"expectedBand":"500","renderedBands":["500"],"expectedPaletteIndex":3,"renderedPaletteIndex":3},{"name":"Calgary","requestedLonLat":[-114.0719,51.0447],"nativeCentre":[-114.075,51.041666666666664],"sourceElevationM":1051.7313232421875,"sourceRow":1977,"sourceColumn":1675,"insideLandMask":true,"expectedBand":"1000","renderedBands":["1000"],"expectedPaletteIndex":4,"renderedPaletteIndex":4},{"name":"Quebec","requestedLonLat":[-71.208,46.8139],"nativeCentre":[-71.20833333333333,46.80833333333334],"sourceElevationM":48.58599853515625,"sourceRow":2231,"sourceColumn":4247,"insideLandMask":true,"expectedBand":"0","renderedBands":["0"],"expectedPaletteIndex":2,"renderedPaletteIndex":2},{"name":"Whitehorse","requestedLonLat":[-135.0568,60.7212],"nativeCentre":[-135.05833333333334,60.725],"sourceElevationM":635.5360107421875,"sourceRow":1396,"sourceColumn":416,"insideLandMask":true,"expectedBand":"500","renderedBands":["500"],"expectedPaletteIndex":3,"renderedPaletteIndex":3},{"name":"Ellesmere interior","requestedLonLat":[-72,82.5],"nativeCentre":[-71.99166666666666,82.49166666666666],"sourceElevationM":1119.0,"sourceRow":90,"sourceColumn":4200,"insideLandMask":true,"expectedBand":"1000","renderedBands":["1000"],"expectedPaletteIndex":4,"renderedPaletteIndex":4},{"name":"Mount Logan grid","requestedLonLat":[-140.405,60.567],"nativeCentre":[-140.40833333333333,60.575],"sourceElevationM":5640.72802734375,"sourceRow":1405,"sourceColumn":95,"insideLandMask":true,"expectedBand":"5500","renderedBands":["5500"],"expectedPaletteIndex":13,"renderedPaletteIndex":13}],"allDisplayedPixelsHaveOneClass":true,"allDisplayLandPixelsIndependentlyMatchedOriginalNearestCell":true,"outlineMatchesDisplayedPixelEdges":true,"areaAudit":"Spherical row-cell areas; native-centre land mask versus finer projected-centre land mask. Differences include coastline/lake rasterization, particularly the separate negative coastal class.","northernmostDisplayLatitude":83.137004,"southernmostDisplayLatitude":41.738912,"brownPaletteClassificationIndicesPreserved":true},"method":{"classification":"Original native float32: negative separate; then lower-inclusive/upper-exclusive 500 m bands. No-data remains transparent.","geometry":"EPSG:3857 palette raster registered to [-142,40,-51,84]; nearest-neighbour resampling only. The original country/lake mask is rasterized at display pixel centres. No interpolated elevations or blended classes.","selectionOutline":"Exact edge of displayed class pixels, converted from EPSG:3857 to WGS84; no simplification; coordinate rounding 6 decimals (<0.08 m). Long polylines split at retained vertices for GPU buffers.","scientificResolution":"Original grid 5460 by 2640, 60 arc-seconds; display reprojection does not add observations. Small islands below a display pixel may not be visible.","publicationYear":"2022 model edition, not all observation years","negativeValues":"Below-sea source values are separate; coastal grid/cartographic-mask resolution mismatch is not asserted to be a terrestrial depression.","rejectedVector":"The 37,824,318-byte interpolated-band prototype with coverage_simplify(.003) was rejected: 24.7 s initial paint and measured boundary displacement upper bound 0.04737 degrees. It is not used in the display."},"raster":{"width":5460,"height":7515,"coordinates":[[-142,84],[-51,84],[-51,40],[-142,40]],"crs":"EPSG:3857","resampling":"nearest","bytes":565752,"seconds":4.165453672409058,"spots":[{"name":"Winnipeg","requestedLonLat":[-97.1384,49.8951],"nativeCentre":[-97.14166666666667,49.891666666666666],"sourceElevationM":232.10125732421875,"sourceRow":2046,"sourceColumn":2691,"insideLandMask":true,"expectedBand":"0","renderedBands":["0"],"expectedPaletteIndex":2,"renderedPaletteIndex":2},{"name":"Regina","requestedLonLat":[-104.6189,50.4452],"nativeCentre":[-104.625,50.44166666666667],"sourceElevationM":576.7361450195312,"sourceRow":2013,"sourceColumn":2242,"insideLandMask":true,"expectedBand":"500","renderedBands":["500"],"expectedPaletteIndex":3,"renderedPaletteIndex":3},{"name":"Calgary","requestedLonLat":[-114.0719,51.0447],"nativeCentre":[-114.075,51.041666666666664],"sourceElevationM":1051.7313232421875,"sourceRow":1977,"sourceColumn":1675,"insideLandMask":true,"expectedBand":"1000","renderedBands":["1000"],"expectedPaletteIndex":4,"renderedPaletteIndex":4},{"name":"Quebec","requestedLonLat":[-71.208,46.8139],"nativeCentre":[-71.20833333333333,46.80833333333334],"sourceElevationM":48.58599853515625,"sourceRow":2231,"sourceColumn":4247,"insideLandMask":true,"expectedBand":"0","renderedBands":["0"],"expectedPaletteIndex":2,"renderedPaletteIndex":2},{"name":"Whitehorse","requestedLonLat":[-135.0568,60.7212],"nativeCentre":[-135.05833333333334,60.725],"sourceElevationM":635.5360107421875,"sourceRow":1396,"sourceColumn":416,"insideLandMask":true,"expectedBand":"500","renderedBands":["500"],"expectedPaletteIndex":3,"renderedPaletteIndex":3},{"name":"Ellesmere interior","requestedLonLat":[-72,82.5],"nativeCentre":[-71.99166666666666,82.49166666666666],"sourceElevationM":1119.0,"sourceRow":90,"sourceColumn":4200,"insideLandMask":true,"expectedBand":"1000","renderedBands":["1000"],"expectedPaletteIndex":4,"renderedPaletteIndex":4},{"name":"Mount Logan grid","requestedLonLat":[-140.405,60.567],"nativeCentre":[-140.40833333333333,60.575],"sourceElevationM":5640.72802734375,"sourceRow":1405,"sourceColumn":95,"insideLandMask":true,"expectedBand":"5500","renderedBands":["5500"],"expectedPaletteIndex":13,"renderedPaletteIndex":13}],"image":{"file":"elevation-classes.png","bytes":565752,"sha256":"c0828ffe683a2b745dd6fb0d1cbc0232ea94a2e550e9d2aa019c61e5cffcb434"},"nativeClasses":{"file":"elevation-native-classes.png","bytes":342695,"sha256":"c66e6f97f269d9c6b71d3db32a7cd1c0a2f4911429bad0398ed529d673339915"},"pixelSizeMercatorMetres":[1855.3248465545591,1855.1259903186346],"sourceAngularResolutionDegrees":[0.016666666666666666,0.016666666666666666],"registration":"Pixel edges span exactly the stated bounds; source and destination both use cell centres. Nearest in both reprojection and MapLibre display.","palette":["#000000","#e6e5e1","#f6eedf","#e9d6b6","#d9b987","#c79b65","#b3804d","#9e683b","#87532f","#72402b","#603027","#4e2522","#3e1b1c","#2d1419"],"sourceMaskGeometryRetained":true,"maskRasterization":"All original land and lake polygons are input; centre-based pixels can omit subpixel islands, not a claim that those islands do not exist.","missingDisplayLandPixels":0},"output":{"file":"elevation-classes.png","bytes":565752,"sha256":"c0828ffe683a2b745dd6fb0d1cbc0232ea94a2e550e9d2aa019c61e5cffcb434"}}
