{"id":4766,"date":"2016-04-02T15:30:53","date_gmt":"2016-04-02T06:30:53","guid":{"rendered":"https:\/\/gunmagisgeek.com\/wordpress\/?p=4766"},"modified":"2016-04-02T15:30:53","modified_gmt":"2016-04-02T06:30:53","slug":"post-4766","status":"publish","type":"post","link":"https:\/\/gunmagisgeek.com\/blog\/d3-js\/4766","title":{"rendered":"\u3010D3.js\u3011\u7d0497,000\u4ef6\u306e\u4f4d\u7f6e\u60c5\u5831\u3092\u5730\u56f3\u306b\u30d7\u30ed\u30c3\u30c8\u3057\u3066\u307f\u305f\u3002"},"content":{"rendered":"<p>\u533b\u7642\u7d4c\u6e08\u7814\u7a76\u6a5f\u69cb\u306b\u3066\u3001\u516c\u958b\u3055\u308c\u3066\u3044\u308b\u300c\u5168\u56fd\u4fdd\u967a\u85ac\u5c40\u4e00\u89a7\u300d\u3068\u300c\u5168\u56fd\u4fdd\u967a\u533b\u7642\u6a5f\u95a2\uff08\u75c5\u9662\u30fb\u8a3a\u7642\u6240\uff09\u4e00\u89a7\u300d\u30c7\u30fc\u30bf\u3092D3.js\u3092\u4f7f\u3063\u3066\u5730\u56f3\u4e0a\u306b\u30d7\u30ed\u30c3\u30c8\u3057\u3066\u307f\u305f\u3002<\/p>\n<p><a href=\"http:\/\/www.ihep.jp\/publications\/report\/search.php?y=2015\">\u5168\u56fd\u4fdd\u967a\u533b\u7642\u6a5f\u95a2\uff08\u75c5\u9662\u30fb\u8a3a\u7642\u6240\uff09\u4e00\u89a7<\/a><\/p>\n<p>\u30c7\u30fc\u30bf\u306e\u6570\u306f\u3001\u4fdd\u967a\u85ac\u5c40\u4e00\u89a7\u304c56,341\u4ef6\u3001\u533b\u7642\u6a5f\u95a2\u4e00\u89a7\u304c95,762\u4ef6\u3068\u306a\u3063\u3066\u3044\u308b\u3002<\/p>\n<h2>\u4fdd\u967a\u85ac\u5c40\u4e00\u89a7(56,341\u4ef6)<\/h2>\n<p>\uff11\u4e07\u4ef6\u3092\u8d85\u3048\u308b\u3068SVG\u3067\u306f\u30ec\u30f3\u30bf\u30ea\u30f3\u30b0\u306e\u8ca0\u8377\u304c\u9ad8\u3059\u304e\u3066\u307e\u3063\u305f\u304f\u52d5\u304b\u306a\u3044\u3002\u30d1\u30f3\uff0f\u30ba\u30fc\u30e0\u306b\u5bfe\u5fdc\u3055\u305b\u308b\u305f\u3081\u306b\u306fcanvas\u3092\u4f7f\u3046\u5fc5\u8981\u304c\u3042\u308b\u3002CanvasRenderingContext2D\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u306e\u3001drowing\u6a5f\u80fd\u3092\u4f7f\u3063\u3066\u4fdd\u967a\u85ac\u5c40\u4f4d\u7f6e\u3092\u63cf\u753b\u3057\u305f\u3002<\/p>\n<p><a href=\"http:\/\/shimz.me\/example\/d3js\/canvas\/pointMap\/context.html\" rel=\"attachment wp-att-4767\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/gunmagisgeek.com\/blog\/wp-content\/uploads\/2016\/04\/canvas_pointmap_1.png\" alt=\"\u4fdd\u967a\u85ac\u5c40\u4f4d\u7f6e\u300056,341\u4ef6\u30d7\u30ed\u30c3\u30c8\" width=\"590\" height=\"452\" class=\"aligncenter size-full wp-image-4767\" srcset=\"https:\/\/gunmagisgeek.com\/blog\/wp-content\/uploads\/2016\/04\/canvas_pointmap_1.png 590w, https:\/\/gunmagisgeek.com\/blog\/wp-content\/uploads\/2016\/04\/canvas_pointmap_1-196x150.png 196w\" sizes=\"auto, (max-width: 590px) 100vw, 590px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/shimz.me\/example\/d3js\/canvas\/pointMap\/context.html\">example<\/a> <\/p>\n<pre class=\"lang:js decode:true \" >d3.select(\"canvas\")\r\n    .call(zoom.on(\"zoom\", zoomed))\r\n    .call(zoom.event);\r\n\r\nfunction zoomed() {\r\n    translate = zoom.translate();\r\n    scale = zoom.scale();\r\n\r\n    context.clearRect(0, 0, width, height);\r\n\r\n    context.save();\r\n\r\n    context.beginPath();\r\n    path(topo);\r\n    context.fillStyle = \"#222\";\r\n    context.fill();\r\n    context.closePath();\r\n\r\n    PHA.forEach(function(d){\r\n        context.beginPath();\r\n        var point = projection([d.X, d.Y])\r\n\/\/      context.arc(~~(point[0]* scale + translate[0]), ~~(point[1]* scale + translate[1]), 0.5, 0, Math.PI*2, false) \/\/ \u9045\u3044\r\n        context.rect(~~(point[0]* scale + translate[0]), ~~(point[1]* scale + translate[1]), 1, 1);\r\n        context.fillStyle = \"#f00\";\r\n        context.fill();\r\n        context.closePath();\r\n    })\r\n\r\n    context.restore();\r\n}\r\n<\/pre>\n<p>\u5168\u4f53\u7684\u306b\u7d50\u69cb\u91cd\u3044\u3002rect(\u56db\u89d2)\u3067\u306f\u306a\u304f\u3001arc(\u5186)\u3092\u4f7f\u3063\u3066\u63cf\u753b\u3059\u308b\u3068\u3055\u3089\u306b\u9045\u304f\u306a\u308b\u3002<br \/>\n\u533b\u7642\u6a5f\u95a2\u4e00\u89a7\u30c7\u30fc\u30bf\u306f\u3055\u3089\u306b\u4ef6\u6570\u304c\u591a\u3044\u306e\u3067\u3001\u5225\u306e\u624b\u6bb5\u3092\u4f7f\u3063\u3066\u63cf\u753b\u3059\u308b\u3002<\/p>\n<h2>\u5168\u56fd\u4fdd\u967a\u533b\u7642\u6a5f\u95a2\u4e00\u89a7(95,762\u4ef6)<\/h2>\n<p>\u65e5\u672c\u5217\u5cf6\u306fsvg\u3067\u63cf\u753b\u3057\u3001\u305d\u306e\u4e0a\u306b\u91cd\u306d\u305fcanvas\u306e\u30a4\u30e1\u30fc\u30b8\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3057\u3066\u30d4\u30af\u30bb\u30eb\u306e\u5024\u3092\u76f4\u63a5\u5909\u66f4\u3059\u308b\u65b9\u6cd5\u3067\u63cf\u753b\u3057\u305f\u3002<\/p>\n<p><a href=\"http:\/\/shimz.me\/example\/d3js\/canvas\/pointMap\/imagedata.html\" rel=\"attachment wp-att-4768\"><img loading=\"lazy\" decoding=\"async\" src=\"http:\/\/gunmagisgeek.com\/blog\/wp-content\/uploads\/2016\/04\/canvas_pointmap_2.png\" alt=\"\u75c5\u9662\u4f4d\u7f6e\u300095,762\u4ef6\u30d7\u30ed\u30c3\u30c8\" width=\"590\" height=\"452\" class=\"aligncenter size-full wp-image-4768\" srcset=\"https:\/\/gunmagisgeek.com\/blog\/wp-content\/uploads\/2016\/04\/canvas_pointmap_2.png 590w, https:\/\/gunmagisgeek.com\/blog\/wp-content\/uploads\/2016\/04\/canvas_pointmap_2-196x150.png 196w\" sizes=\"auto, (max-width: 590px) 100vw, 590px\" \/><\/a><\/p>\n<p><a href=\"http:\/\/shimz.me\/example\/d3js\/canvas\/pointMap\/imagedata.html\">example<\/a><\/p>\n<pre class=\"lang:js decode:true \" >d3.select(\"body\")\r\n    .call(zoom.on(\"zoom\", zoomed))\r\n    .call(zoom.event)\r\n\r\nfunction zoomed() {\r\n    var canvasWidth  = width\r\n    var canvasHeight = height\r\n    var ctx = context\r\n    var imageData = ctx.getImageData(0, 0, canvasWidth, canvasHeight)\r\n    \r\n    var buf = new ArrayBuffer(imageData.data.length)\r\n    var buf8 = new Uint8ClampedArray(buf)\r\n    var ndata = new Uint32Array(buf)\r\n    \r\n\r\n    translate = zoom.translate()\r\n    scale = zoom.scale()\r\n\r\n    hosp.forEach(function(d){\r\n        var point = projection([+d.X, +d.Y])\r\n        var x = ~~(point[0]* scale + translate[0])\r\n        var y = ~~(point[1]* scale + translate[1])\r\n        if (x &gt; width || y &gt; height || x &lt; 0 || y &lt; 0) return \r\n        \r\n    \r\n        ndata[y * canvasWidth + x] = \r\n            (255   &lt;&lt; 24) |    \/\/ alpha\r\n            (0x99 &lt;&lt; 16) |    \/\/ blue\r\n            (0xff &lt;&lt;  8) |    \/\/ green\r\n             0x99                 \r\n        \r\n    })\r\n\r\n    imageData.data.set(buf8)\r\n    ctx.putImageData(imageData, 0, 0)\r\n\r\n    base.attr({\r\n        d:path,\r\n        fill:\"#222\",\r\n        stroke:\"#000\"\r\n    })\r\n\r\n    \r\n}<\/pre>\n<p>\u3053\u306e\u65b9\u6cd5\u3060\u3068\u3001\u4f4d\u7f6e\u3092\u30c9\u30c3\u30c8\u3068\u3057\u3066\u3057\u304b\u8868\u73fe\u3067\u304d\u306a\u3044\u304c\u3001\u65e9\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u533b\u7642\u7d4c\u6e08\u7814\u7a76\u6a5f\u69cb\u306b\u3066\u3001\u516c\u958b\u3055\u308c\u3066\u3044\u308b\u300c\u5168\u56fd\u4fdd\u967a\u85ac\u5c40&hellip;<\/p>\n","protected":false},"author":1,"featured_media":4768,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[56,18],"tags":[],"class_list":["post-4766","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-canvas","category-d3-js","has-post-thumbnail-archive"],"_links":{"self":[{"href":"https:\/\/gunmagisgeek.com\/blog\/wp-json\/wp\/v2\/posts\/4766","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/gunmagisgeek.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/gunmagisgeek.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/gunmagisgeek.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/gunmagisgeek.com\/blog\/wp-json\/wp\/v2\/comments?post=4766"}],"version-history":[{"count":0,"href":"https:\/\/gunmagisgeek.com\/blog\/wp-json\/wp\/v2\/posts\/4766\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/gunmagisgeek.com\/blog\/wp-json\/wp\/v2\/media\/4768"}],"wp:attachment":[{"href":"https:\/\/gunmagisgeek.com\/blog\/wp-json\/wp\/v2\/media?parent=4766"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/gunmagisgeek.com\/blog\/wp-json\/wp\/v2\/categories?post=4766"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/gunmagisgeek.com\/blog\/wp-json\/wp\/v2\/tags?post=4766"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}