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32:{"id":"c263d9518ce95c5f","slug":"taiwan-hillshade","title":"Taiwan Hillshade","thumbnail":"ff452845e4e4dcd068fd1aa689e3d2ace5961b4bbbf7b357092c922422de5e26","access_level":"public","create_time":"$D2022-09-28T20:34:30.828Z","update_time":"$D2023-12-18T21:18:00.334Z","view_time":null,"first_public_time":"$D2022-09-30T21:44:56.275Z","has_unpublished_edits":null,"fork":true,"stars":1,"starred":false,"owner":{"type":"team","id":"6ae7f99f369fe7ae","login":"lifewinning","name":"Ingrid Burrington","avatar_url":"https://avatars-next.observableusercontent.com/361e8fec3b6688927a430032a2ebcc4a35bfb53a951f775e8a60fdac19e4f742","tier":"starter_2024"},"version":5029,"publish_version":null,"role":null,"authored":false,"authors":[{"type":"individual","id":"87193242b5b8718c","login":"lifewinning","name":"Ingrid Burrington","avatar_url":"https://avatars-next.observableusercontent.com/361e8fec3b6688927a430032a2ebcc4a35bfb53a951f775e8a60fdac19e4f742","tier":null}],"members":[{"type":"individual","id":"87193242b5b8718c","login":"lifewinning","name":"Ingrid Burrington","avatar_url":"https://avatars-next.observableusercontent.com/361e8fec3b6688927a430032a2ebcc4a35bfb53a951f775e8a60fdac19e4f742","tier":null,"role":"editor"}],"comments":[],"custom_thumbnail":true,"trashed":false,"lapsed":null,"subscribed":null,"forks":2,"collection":null,"type":"notebook","body":{"title":"Taiwan Hillshade","cells":[{"id":0,"value":"md`# Taiwan Hillshade`","pinned":false,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":2831,"value":"xyz_tiles = xyz(bounds, 6)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":2895,"value":"map = svg``","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":4110,"value":"clipFlat = clipped\n .map((c) =>\n c\n .map((m) => turf.flatten(m))\n .map((l) => l.features)\n .flat()\n .map((m) => turf.rewind(m))\n )\n .map((c) =>\n turf\n .dissolve(turf.featureCollection(c))\n .features.map((m) => turf.rewind(m, { reverse: true }))\n )","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":4881,"value":"turf.tesselate(water_rewind.features[0])","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":2897,"value":"rewind = turf.rewind(site, { reverse: true })","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":2810,"value":"bounds = [\n site.geometry.coordinates[0][0],\n site.geometry.coordinates[0][2]\n]","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":3122,"value":"site = zoomed_bbox","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":3438,"value":"zoomed_bbox = turf.bboxPolygon(\n turf.bbox(\n turf.buffer(turf.bboxPolygon(turf.bbox(tw)), 2, {\n unit: \"miles\"\n })\n )\n)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":4150,"value":"counties10t = FileAttachment(\"counties-10t.json\").json()","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":4177,"value":"hsinchu = turf.combine(\n turf.featureCollection(\n topojson\n .feature(counties10t, counties10t.objects.counties)\n .features.filter((f) => f.properties.COUNTYENG.includes(\"Hsinchu City\"))\n )\n)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":4251,"value":"kaohsiung = turf.combine(\n turf.featureCollection(\n topojson\n .feature(counties10t, counties10t.objects.counties)\n .features.filter((f) => f.properties.COUNTYENG.includes(\"Kaohsiung\"))\n )\n)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":4160,"value":"tw = topojson.feature(counties10t, counties10t.objects.nation)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":2807,"value":"geojson = FileAttachment(\"map(12).geojson\").json()","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":3016,"value":"ctr = turf.center(site)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":19,"value":"projection = d3\n .geoMercator()\n .center(turf.center(twFrame.features[0]).geometry.coordinates)\n .translate([0, 0])\n .fitSize([width, height], rewind)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":4958,"value":"tessel","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":4914,"value":"manual_union = [\n turf.rewind(\n turf.union(turf.difference(geom_water[3], geom_water[6]), geom_water[4]),\n { reverse: true }\n ),\n turf.rewind(\n turf.union(geom_water[6], turf.difference(geom_water[7], geom_water[4])),\n { reverse: true }\n )\n]","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":3153,"value":"segment_water = tessel.features\n .map((m) =>\n path(m)\n .split(\"M\")\n .filter((f) => f != \"\")\n .map((m) => \"M\" + m)\n .flat()\n .map((s) => Polygon.fromPath(s))\n )\n .flat()\n .flat()\n .map((m, i) => m.getHatches(hatchpattern(i), 6, 0))\n .filter((f) => f.length > 0)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":3149,"value":"water_nest = d3\n .nest()\n .key(function (d) {\n return d.properties.kind;\n })\n .entries(geom_water)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":3146,"value":"geom_water = mb_water\n .map((m) => m.water)\n .filter((m) => m != undefined)\n .map((m) => m.features)\n .flat()\n .filter((f) => f.geometry.type != \"MultiLineString\")\n .filter((f) => f.geometry.type != \"LineString\")\n .filter((f) => f.geometry.type != \"Point\")\n .flat()\n // .map((o) => turf.intersect(o, zoomed_bbox))\n // .map((m) => turf.rewind(m, { reverse: true }))","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":4194,"value":"biggerframe = xyz(\n [twFrame.features[0].geometry.coordinates[0][0],\n twFrame.features[0].geometry.coordinates[0][2]],\n 7\n)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":4202,"value":"(twFrame.features[0].geometry.coordinates[0][0],\ntwFrame.features[0].geometry.coordinates[0][2])","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":4195,"value":"twFrame = FileAttachment(\"tw-frame.geojson\").json()","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":3142,"value":"mb_water = Promise.all(\n biggerframe.map(async (t) => {\n let data = new vt.VectorTile(\n new Protobuf(\n await d3.buffer(\n `https://api.mapbox.com/v4/mapbox.mapbox-streets-v8/${t.z}/${t.x}/${t.y}.mvt?access_token=pk.eyJ1Ijoid2FzaGluZ3RvbnBvc3QiLCJhIjoibWJkTGx1SSJ9.6cMdwgs-AYrRtQsEkXlHqg`\n )\n )\n ).layers;\n\n t.data = Object.keys(data).reduce((initialData, key) => {\n initialData[key] = {\n type: \"FeatureCollection\",\n features: [...Array(data[key].length).keys()].map((item, i) => {\n let feature = data[key].feature(i).toGeoJSON(t.x, t.y, t.z);\n return feature;\n })\n };\n\n return initialData;\n }, {});\n\n return t.data;\n })\n)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":3249,"value":"hatchpattern = function (i) {\n if (i % 2 == 0) {\n return PI / 3\n } else {\n return -(PI / 3)\n }\n}","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":4870,"value":"water_rewind = turf.rewind(\n turf.flatten(geom_water.reduce((p, m) => turf.union(p, m))),\n { reverse: true }\n)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":4885,"value":"tessel = turf.rewind(turf.tesselate(water_rewind.features[0]), {\n reverse: true\n})","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":2977,"value":"classedSplitZ = clipFlat\n .map(\n (f, i) =>\n f.map((m) =>\n path(m)\n .split(\"Z\")\n .map((s) => Polygon.fromPath(s))\n .map((m) => m.getHatches(-PI / 3, 1.5, 0))\n )\n\n // .flat()\n // .flat()\n //\n //\n )\n .flat()\n .flat()\n .filter((f) => f.length > 0)\n .flat()","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":2943,"value":"tiles = Promise.all(\n xyz_tiles.map(async (t) => {\n let data = new vt.VectorTile(\n new Protobuf(\n await d3.buffer(\n `https://a.tiles.mapbox.com/v4/mapbox.mapbox-terrain-v2/${t.z}/${t.x}/${t.y}.mvt?access_token=pk.eyJ1IjoibGlmZXdpbm5pbmciLCJhIjoiYWZyWnFjMCJ9.ksAPTz72HyEjF2AOMbRNvg`\n )\n )\n ).layers;\n t.data = Object.keys(data).reduce((initialData, key) => {\n initialData[key] = {\n type: \"FeatureCollection\",\n features: [...Array(data[key].length).keys()].map((item, i) => {\n let feature = data[key].feature(i).toGeoJSON(t.x, t.y, t.z);\n return feature;\n })\n };\n\n return initialData;\n }, {});\n\n return t;\n })\n)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":3620,"value":"tileArr = Promise.all(\n xyz_tiles.map(\n (t) =>\n `https://a.tiles.mapbox.com/v4/mapbox.mapbox-terrain-v2/${t.z}/${t.x}/${t.y}.mvt?access_token=pk.eyJ1IjoibGlmZXdpbm5pbmciLCJhIjoiYWZyWnFjMCJ9.ksAPTz72HyEjF2AOMbRNvg`\n )\n)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":21,"value":"height = 800","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":232,"value":"hillshade = tiles\n .filter((t) => Object.keys(t.data).includes(\"hillshade\"))\n .map((h) => h.data.hillshade)\n .map((h) => h.features)\n .flat()","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":3687,"value":"// diss.map((m) => m.map((f) => path(f)))","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":1376,"value":"poly = hs_nest\n .map((e) =>\n e.values.map((v) =>\n v.values\n .map((h) => {\n if (h.geometry.type != \"Polygon\") {\n return turf.flatten(h).features.flat();\n } else {\n return h;\n }\n })\n .flat()\n )\n )\n .flat()\n//.flat()","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":3717,"value":"clipped = poly.map((p) =>\n p\n .map((o) => turf.intersect(tw_rew, o))\n .filter((f) => f != null)\n .map((m) => turf.rewind(m, { reverse: true }))\n)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":4009,"value":"tw_rew = turf.rewind(twBigisland.features[1], { reverse: true })","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":1234,"value":"hs_nest = d3\n .nest()\n .key(function (d) {\n return d.properties.class;\n })\n .key(function (d) {\n return d.properties.level;\n })\n .entries(hillshade)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":7,"value":"Protobuf = require(\"pbf@3/dist/pbf.js\")","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":17,"value":"d3 = require(\"d3-geo@1\", \"d3-selection@1\", \"d3-fetch@1\", \"d3-tile@0.0\", \"d3-scale@2.1.2\", \"d3-collection@latest\")","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":44,"value":"path = d3.geoPath(projection)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":614,"value":"clip = require(\"polygon-clipping@0.15.3\")","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":612,"value":"turf = require(\"@turf/turf@latest\")","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":15,"value":"vt = require('https://bundle.run/@mapbox/vector-tile@1.3.1')","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":2095,"value":"import { Polygon, PI } from \"@makio135/utilities\"","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":2804,"value":"xyz = require(\"https://bundle.run/xyz-affair@0.9.1\")","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":3674,"value":"twBigisland = FileAttachment(\"tw-bigisland.geojson\").json()","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":4148,"value":"science_parks = FileAttachment(\"science_parks.geojson\").json()","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"},{"id":4227,"value":"addedscienceparks = FileAttachment(\"addedscienceparks.geojson\").json()","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined","output":"$undefined","database":"$undefined"}],"files":"$W34","stdlib":"1","titling":"auto"}} 33:"$32:body"