{"title":"$:/plugins/tiddlywiki/d3","name":"D3","description":"D3 data visualisation demo","list":"readme","version":"5.2.2","plugin-type":"plugin","dependents":"","type":"application/json","tiddlers":{"$:/plugins/tiddlywiki/d3/barwidget.js":{"title":"$:/plugins/tiddlywiki/d3/barwidget.js","text":"/*\\\ntitle: $:/plugins/tiddlywiki/d3/barwidget.js\ntype: application/javascript\nmodule-type: widget\n\nA widget for displaying stacked or grouped bar charts. Derived from http://bl.ocks.org/mbostock/3943967\n\n\\*/\n(function(){\n\n/*jslint node: true, browser: true */\n/*global $tw: false */\n\"use strict\";\n\nvar Widget = require(\"$:/core/modules/widgets/widget.js\").widget,\n\td3 = require(\"$:/plugins/tiddlywiki/d3/d3.js\").d3;\n\nvar BarWidget = function(parseTreeNode,options) {\n\tthis.initialise(parseTreeNode,options);\n};\n\n/*\nInherit from the base widget class\n*/\nBarWidget.prototype = new Widget();\n\n/*\nRender this widget into the DOM\n*/\nBarWidget.prototype.render = function(parent,nextSibling) {\n\t// Save the parent dom node\n\tthis.parentDomNode = parent;\n\t// Compute our attributes\n\tthis.computeAttributes();\n\t// Execute our logic\n\tthis.execute();\n\t// Create the chart\n\tvar chart = this.createChart(parent,nextSibling);\n\tthis.updateChart = chart.updateChart;\n\tif(this.updateChart) {\n\t\tthis.updateChart();\n\t}\n\t// Insert the chart into the DOM and render any children\n\tparent.insertBefore(chart.domNode,nextSibling);\n\tthis.domNodes.push(chart.domNode);\n};\n\nBarWidget.prototype.createChart = function(parent,nextSibling) {\n\t// Get the data we're plotting\n\tvar data = this.wiki.getTiddlerData(this.barData),\n\t\tn,m,stack,layers;\n\tif(data) {\n\t\tn = data.layers;\n\t\tm = data.samples;\n\t\tlayers = data.data;\n\t} else { // Use randomly generated data if we don't have any\n\t\tn = 4; 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})\n\t\t\t.attr(\"x\", function(d, i, j) { return x(d.x) + x.rangeBand() / n * j; })\n\t\t\t.attr(\"width\", x.rangeBand() / n)\n\t\t\t.transition()\n\t\t\t.attr(\"y\", function(d) { return y(d.y); })\n\t\t\t.attr(\"height\", function(d) { return height - y(d.y); });\n\t}\n\n\tfunction transitionStacked() {\n\t\ty.domain([0, yStackMax]);\n\t\trect.transition()\n\t\t\t.duration(500)\n\t\t\t.delay(function(d, i) { return i * 10; })\n\t\t\t.attr(\"y\", function(d) { return y(d.y0 + d.y); })\n\t\t\t.attr(\"height\", function(d) { return y(d.y0) - y(d.y0 + d.y); })\n\t\t\t.transition()\n\t\t\t.attr(\"x\", function(d) { return x(d.x); })\n\t\t\t.attr(\"width\", x.rangeBand());\n\t}\n\n\t// Inspired by Lee Byron's test data generator.\n\tfunction bumpLayer(n, o) {\n\t\tfunction bump(a) {\n\t\t\tvar x = 1 / (0.1 + Math.random()),\n\t\t\t\ty = 2 * Math.random() - 0.5,\n\t\t\t\tz = 10 / (0.1 + Math.random());\n\t\t\tfor (var i = 0; i < n; i++) {\n\t\t\tvar w = (i / n - y) * z;\n\t\t\ta[i] += x * Math.exp(-w * w);\n\t\t\t}\n\t\t}\n\t\tvar a = [], i;\n\t\tfor (i = 0; i < n; ++i) a[i] = o + o * Math.random();\n\t\tfor (i = 0; i < 5; ++i) bump(a);\n\t\treturn a.map(function(d, i) { return {x: i, y: Math.max(0, d)}; });\n\t}\n};\n\n/*\nCompute the internal state of the widget\n*/\nBarWidget.prototype.execute = function() {\n\t// Get the parameters from the attributes\n\tthis.barData = this.getAttribute(\"data\");\n\tthis.barGrouped = this.getAttribute(\"grouped\",\"no\");\n};\n\n/*\nSelectively refreshes the widget if needed. 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yl.year=function(n,t){return ml.domain(n.map(ha)).ticks(t).map(fa)},da.time.scale.utc=function(){return aa(da.scale.linear(),yl,xl)},da.text=pt(function(n){return n.responseText}),da.json=function(n,t){return dt(n,\"application/json\",ga,t)},da.html=function(n,t){return dt(n,\"text/html\",pa,t)},da.xml=pt(function(n){return n.responseXML}),da}();}\nexports.d3 = d3;\n","type":"application/javascript","title":"$:/plugins/tiddlywiki/d3/d3.js","module-type":"library"},"$:/plugins/tiddlywiki/d3/d3.layout.cloud.js":{"text":"// Word cloud layout by Jason Davies, http://www.jasondavies.com/word-cloud/\n// Algorithm due to Jonathan Feinberg, http://static.mrfeinberg.com/bv_ch03.pdf\n(function(exports) {\n  function cloud() {\n    var size = [256, 256],\n        text = cloudText,\n        font = cloudFont,\n        fontSize = cloudFontSize,\n        fontStyle = cloudFontNormal,\n        fontWeight = cloudFontNormal,\n        rotate = cloudRotate,\n        padding = cloudPadding,\n        spiral = archimedeanSpiral,\n        words = [],\n        timeInterval = Infinity,\n        event = d3.dispatch(\"word\", \"end\"),\n        timer = null,\n        cloud = {};\n\n    cloud.start = function() {\n      var board = zeroArray((size[0] >> 5) * size[1]),\n          bounds = null,\n          n = words.length,\n          i = -1,\n          tags = [],\n          data = words.map(function(d, i) {\n            d.text = text.call(this, d, i);\n            d.font = font.call(this, d, i);\n            d.style = fontStyle.call(this, d, i);\n            d.weight = fontWeight.call(this, d, i);\n            d.rotate = rotate.call(this, d, i);\n            d.size = ~~fontSize.call(this, d, i);\n            d.padding = padding.call(this, d, i);\n            return d;\n          }).sort(function(a, b) { return b.size - a.size; });\n\n      if (timer) clearInterval(timer);\n      timer = setInterval(step, 0);\n      step();\n\n      return cloud;\n\n      function step() {\n        var start = +new Date,\n            d;\n        while (+new Date - start < timeInterval && ++i < n && timer) {\n          d = data[i];\n          d.x = (size[0] * (Math.random() + .5)) >> 1;\n          d.y = (size[1] * (Math.random() + .5)) >> 1;\n          cloudSprite(d, data, i);\n          if (d.hasText && place(board, d, bounds)) {\n            tags.push(d);\n            event.word(d);\n            if (bounds) cloudBounds(bounds, d);\n            else bounds = [{x: d.x + d.x0, y: d.y + d.y0}, {x: d.x + d.x1, y: d.y + d.y1}];\n            // Temporary hack\n            d.x -= size[0] >> 1;\n            d.y -= size[1] >> 1;\n          }\n        }\n        if (i >= n) {\n          cloud.stop();\n          event.end(tags, bounds);\n        }\n      }\n    }\n\n    cloud.stop = function() {\n      if (timer) {\n        clearInterval(timer);\n        timer = null;\n      }\n      return cloud;\n    };\n\n    cloud.timeInterval = function(x) {\n      if (!arguments.length) return timeInterval;\n      timeInterval = x == null ? Infinity : x;\n      return cloud;\n    };\n\n    function place(board, tag, bounds) {\n      var perimeter = [{x: 0, y: 0}, {x: size[0], y: size[1]}],\n          startX = tag.x,\n          startY = tag.y,\n          maxDelta = Math.sqrt(size[0] * size[0] + size[1] * size[1]),\n          s = spiral(size),\n          dt = Math.random() < .5 ? 1 : -1,\n          t = -dt,\n          dxdy,\n          dx,\n          dy;\n\n      while (dxdy = s(t += dt)) {\n        dx = ~~dxdy[0];\n        dy = ~~dxdy[1];\n\n        if (Math.min(dx, dy) > maxDelta) break;\n\n        tag.x = startX + dx;\n        tag.y = startY + dy;\n\n        if (tag.x + tag.x0 < 0 || tag.y + tag.y0 < 0 ||\n            tag.x + tag.x1 > size[0] || tag.y + tag.y1 > size[1]) continue;\n        // TODO only check for collisions within current bounds.\n        if (!bounds || !cloudCollide(tag, board, size[0])) {\n          if (!bounds || collideRects(tag, bounds)) {\n            var sprite = tag.sprite,\n                w = tag.width >> 5,\n                sw = size[0] >> 5,\n                lx = tag.x - (w << 4),\n                sx = lx & 0x7f,\n                msx = 32 - sx,\n                h = tag.y1 - tag.y0,\n                x = (tag.y + tag.y0) * sw + (lx >> 5),\n                last;\n            for (var j = 0; j < h; j++) {\n              last = 0;\n              for (var i = 0; i <= w; i++) {\n                board[x + i] |= (last << msx) | (i < w ? (last = sprite[j * w + i]) >>> sx : 0);\n              }\n              x += sw;\n            }\n            delete tag.sprite;\n            return true;\n          }\n        }\n      }\n      return false;\n    }\n\n    cloud.words = function(x) {\n      if (!arguments.length) return words;\n      words = x;\n      return cloud;\n    };\n\n    cloud.size = function(x) {\n      if (!arguments.length) return size;\n      size = [+x[0], +x[1]];\n      return cloud;\n    };\n\n    cloud.font = function(x) {\n      if (!arguments.length) return font;\n      font = d3.functor(x);\n      return cloud;\n    };\n\n    cloud.fontStyle = function(x) {\n      if (!arguments.length) return fontStyle;\n      fontStyle = d3.functor(x);\n      return cloud;\n    };\n\n    cloud.fontWeight = function(x) {\n      if (!arguments.length) return fontWeight;\n      fontWeight = d3.functor(x);\n      return cloud;\n    };\n\n    cloud.rotate = function(x) {\n      if (!arguments.length) return rotate;\n      rotate = d3.functor(x);\n      return cloud;\n    };\n\n    cloud.text = function(x) {\n      if (!arguments.length) return text;\n      text = d3.functor(x);\n      return cloud;\n    };\n\n    cloud.spiral = function(x) {\n      if (!arguments.length) return spiral;\n      spiral = spirals[x + \"\"] || x;\n      return cloud;\n    };\n\n    cloud.fontSize = function(x) {\n      if (!arguments.length) return fontSize;\n      fontSize = d3.functor(x);\n      return cloud;\n    };\n\n    cloud.padding = function(x) {\n      if (!arguments.length) return padding;\n      padding = d3.functor(x);\n      return cloud;\n    };\n\n    return d3.rebind(cloud, event, \"on\");\n  }\n\n  function cloudText(d) {\n    return d.text;\n  }\n\n  function cloudFont() {\n    return \"serif\";\n  }\n\n  function cloudFontNormal() {\n    return \"normal\";\n  }\n\n  function cloudFontSize(d) {\n    return Math.sqrt(d.value);\n  }\n\n  function cloudRotate() {\n    return (~~(Math.random() * 6) - 3) * 30;\n  }\n\n  function cloudPadding() {\n    return 1;\n  }\n\n  // Fetches a monochrome sprite bitmap for the specified text.\n  // Load in batches for speed.\n  function cloudSprite(d, data, di) {\n    if (d.sprite) return;\n    c.clearRect(0, 0, (cw << 5) / ratio, ch / ratio);\n    var x = 0,\n        y = 0,\n        maxh = 0,\n        n = data.length;\n    --di;\n    while (++di < n) {\n      d = data[di];\n      c.save();\n      c.font = d.style + \" \" + d.weight + \" \" + ~~((d.size + 1) / ratio) + \"px \" + d.font;\n      var w = c.measureText(d.text + \"m\").width * ratio,\n          h = d.size << 1;\n      if (d.rotate) {\n        var sr = Math.sin(d.rotate * cloudRadians),\n            cr = Math.cos(d.rotate * cloudRadians),\n            wcr = w * cr,\n            wsr = w * sr,\n            hcr = h * cr,\n            hsr = h * sr;\n        w = (Math.max(Math.abs(wcr + hsr), Math.abs(wcr - hsr)) + 0x1f) >> 5 << 5;\n        h = ~~Math.max(Math.abs(wsr + hcr), Math.abs(wsr - hcr));\n      } else {\n        w = (w + 0x1f) >> 5 << 5;\n      }\n      if (h > maxh) maxh = h;\n      if (x + w >= (cw << 5)) {\n        x = 0;\n        y += maxh;\n        maxh = 0;\n      }\n      if (y + h >= ch) break;\n      c.translate((x + (w >> 1)) / ratio, (y + (h >> 1)) / ratio);\n      if (d.rotate) c.rotate(d.rotate * cloudRadians);\n      c.fillText(d.text, 0, 0);\n      if (d.padding) c.lineWidth = 2 * d.padding, c.strokeText(d.text, 0, 0);\n      c.restore();\n      d.width = w;\n      d.height = h;\n      d.xoff = x;\n      d.yoff = y;\n      d.x1 = w >> 1;\n      d.y1 = h >> 1;\n      d.x0 = -d.x1;\n      d.y0 = -d.y1;\n      d.hasText = true;\n      x += w;\n    }\n    var pixels = c.getImageData(0, 0, (cw << 5) / ratio, ch / ratio).data,\n        sprite = [];\n    while (--di >= 0) {\n      d = data[di];\n      if (!d.hasText) continue;\n      var w = d.width,\n          w32 = w >> 5,\n          h = d.y1 - d.y0;\n      // Zero the buffer\n      for (var i = 0; i < h * w32; i++) sprite[i] = 0;\n      x = d.xoff;\n      if (x == null) return;\n      y = d.yoff;\n      var seen = 0,\n          seenRow = -1;\n      for (var j = 0; j < h; j++) {\n        for (var i = 0; i < w; i++) {\n          var k = w32 * j + (i >> 5),\n              m = pixels[((y + j) * (cw << 5) + (x + i)) << 2] ? 1 << (31 - (i % 32)) : 0;\n          sprite[k] |= m;\n          seen |= m;\n        }\n        if (seen) seenRow = j;\n        else {\n          d.y0++;\n          h--;\n          j--;\n          y++;\n        }\n      }\n      d.y1 = d.y0 + seenRow;\n      d.sprite = sprite.slice(0, (d.y1 - d.y0) * w32);\n    }\n  }\n\n  // Use mask-based collision detection.\n  function cloudCollide(tag, board, sw) {\n    sw >>= 5;\n    var sprite = tag.sprite,\n        w = tag.width >> 5,\n        lx = tag.x - (w << 4),\n        sx = lx & 0x7f,\n        msx = 32 - sx,\n        h = tag.y1 - tag.y0,\n        x = (tag.y + tag.y0) * sw + (lx >> 5),\n        last;\n    for (var j = 0; j < h; j++) {\n      last = 0;\n      for (var i = 0; i <= w; i++) {\n        if (((last << msx) | (i < w ? (last = sprite[j * w + i]) >>> sx : 0))\n            & board[x + i]) return true;\n      }\n      x += sw;\n    }\n    return false;\n  }\n\n  function cloudBounds(bounds, d) {\n    var b0 = bounds[0],\n        b1 = bounds[1];\n    if (d.x + d.x0 < b0.x) b0.x = d.x + d.x0;\n    if (d.y + d.y0 < b0.y) b0.y = d.y + d.y0;\n    if (d.x + d.x1 > b1.x) b1.x = d.x + d.x1;\n    if (d.y + d.y1 > b1.y) b1.y = d.y + d.y1;\n  }\n\n  function collideRects(a, b) {\n    return a.x + a.x1 > b[0].x && a.x + a.x0 < b[1].x && a.y + a.y1 > b[0].y && a.y + a.y0 < b[1].y;\n  }\n\n  function archimedeanSpiral(size) {\n    var e = size[0] / size[1];\n    return function(t) {\n      return [e * (t *= .1) * Math.cos(t), t * Math.sin(t)];\n    };\n  }\n\n  function rectangularSpiral(size) {\n    var dy = 4,\n        dx = dy * size[0] / size[1],\n        x = 0,\n        y = 0;\n    return function(t) {\n      var sign = t < 0 ? -1 : 1;\n      // See triangular numbers: T_n = n * (n + 1) / 2.\n      switch ((Math.sqrt(1 + 4 * sign * t) - sign) & 3) {\n        case 0:  x += dx; break;\n        case 1:  y += dy; break;\n        case 2:  x -= dx; break;\n        default: y -= dy; break;\n      }\n      return [x, y];\n    };\n  }\n\n  // TODO reuse arrays?\n  function zeroArray(n) {\n    var a = [],\n        i = -1;\n    while (++i < n) a[i] = 0;\n    return a;\n  }\n\n  var cloudRadians = Math.PI / 180,\n      cw = 1 << 11 >> 5,\n      ch = 1 << 11,\n      canvas,\n      ratio = 1;\n\n  if (typeof document !== \"undefined\") {\n    canvas = document.createElement(\"canvas\");\n    canvas.width = 1;\n    canvas.height = 1;\n    ratio = Math.sqrt(canvas.getContext(\"2d\").getImageData(0, 0, 1, 1).data.length >> 2);\n    canvas.width = (cw << 5) / ratio;\n    canvas.height = ch / ratio;\n  } else {\n    // node-canvas support\n    var Canvas = require(\"canvas\");\n    canvas = new Canvas(cw << 5, ch);\n  }\n\n  var c = canvas.getContext(\"2d\"),\n      spirals = {\n        archimedean: archimedeanSpiral,\n        rectangular: rectangularSpiral\n      };\n  c.fillStyle = c.strokeStyle = \"red\";\n  c.textAlign = \"center\";\n\n  exports.cloud = cloud;\n})(typeof exports === \"undefined\" ? d3.layout || (d3.layout = {}) : exports);\n","type":"application/javascript","title":"$:/plugins/tiddlywiki/d3/d3.layout.cloud.js","module-type":"library"},"$:/plugins/tiddlywiki/d3/readme":{"title":"$:/plugins/tiddlywiki/d3/readme","text":"The D3 plugin is a proof-of-concept demo of integration with the D3.js data visualisation framework (http://d3js.org).\n\nIt is not currently in a state where it can be used for anything useful.\n\n[[Source code|https://github.com/Jermolene/TiddlyWiki5/blob/master/plugins/tiddlywiki/d3]]\n"}}}