block by emeeks 3361332

Topic Clouds using D3 Word Cloud Layout

Full Screen

index.html

<html>
  <head>
    <title>Topic Clouds</title> 
    <meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>
    <script src="//d3js.org/d3.v2.min.js?2.10.0"></script>
    <script type="text/javascript" src="d3.layout.cloud.js"></script>
</head>

<body>
<script>


wordScale=d3.scale.linear().domain([1,100,1000,10000]).range([10,20,40,80]).clamp(true);
wordColor=d3.scale.linear().domain([10,20,40,80]).range(["blue","green","orange","red"]);

for (x = 0; x < 3; x++) {
	viz = d3.select("body").append("svg")
    .attr("width", 400)
    .attr("height", 440)
    .attr("id", "svg" + x);
}
for (x = 0; x < 3; x++) {
//d3.json("topic.json", function(topic) {
d3.csv("topic_words"+x+".csv", function(topic) {
	
  d3.layout.cloud().size([400, 400])
//      .words([{"text":"test","size":wordScale(.01)},{"text":"bad","size":wordScale(1)}])
      .words(topic)
      .rotate(function() { return ~~(Math.random() * 2) * 5; })
      .fontSize(function(d) { return wordScale(d.size); })
      .on("end", draw)
      .start();

  function draw(words) {
	  
	viz = d3.select("#svg" + topic[0].topic);
        
      viz.append("g")
        .attr("transform", "translate(200,220)")
      .selectAll("text")
        .data(words)
      .enter().append("text")
        .style("font-size", function(d) { return d.size + "px"; })
        .style("fill", function(d) { return wordColor(d.size); })
        .style("opacity", .75)
        .attr("text-anchor", "middle")
        .attr("transform", function(d) {
          return "translate(" + [d.x, d.y] + ")rotate(" + d.rotate + ")";
        })
        .text(function(d) { return d.text; });
    
		viz
        .append("text")
        .data([topic[0]])
        .style("font-size", 20)
        .style("font-weight", 900)
        .attr("x", 100)
        .attr("y", 20)
        .text(function(d) { return "TOPIC " + d.topic; })

//  d3.select("#svg"+x).append("svg:text").text("Topic " + x);	
//    viz.enter().append("svg:text").text("Topic " + x);

  }

})
}
</script>

d3.layout.cloud.js

// Word cloud layout by Jason Davies, http://www.jasondavies.com/word-cloud/
// Algorithm due to Jonathan Feinberg, http://static.mrfeinberg.com/bv_ch03.pdf
(function(exports) {
  function cloud() {
    var size = [256, 256],
        text = cloudText,
        font = cloudFont,
        fontSize = cloudFontSize,
        rotate = cloudRotate,
        padding = cloudPadding,
        spiral = archimedeanSpiral,
        words = [],
        timeInterval = Infinity,
        event = d3.dispatch("word", "end"),
        timer = null,
        cloud = {};

    cloud.start = function() {
      var board = zeroArray((size[0] >> 5) * size[1]),
          bounds = null,
          n = words.length,
          i = -1,
          tags = [],
          data = words.map(function(d, i) {
        return {
          text: text.call(this, d, i),
          font: font.call(this, d, i),
          rotate: rotate.call(this, d, i),
          size: ~~fontSize.call(this, d, i),
          padding: cloudPadding.call(this, d, i)
        };
      }).sort(function(a, b) { return b.size - a.size; });

      if (timer) clearInterval(timer);
      timer = setInterval(step, 0);
      step();

      return cloud;

      function step() {
        var start = +new Date,
            d;
        while (+new Date - start < timeInterval && ++i < n && timer) {
          d = data[i];
          d.x = (size[0] * (Math.random() + .5)) >> 1;
          d.y = (size[1] * (Math.random() + .5)) >> 1;
          cloudSprite(d, data, i);
          if (place(board, d, bounds)) {
            tags.push(d);
            event.word(d);
            if (bounds) cloudBounds(bounds, d);
            else bounds = [{x: d.x + d.x0, y: d.y + d.y0}, {x: d.x + d.x1, y: d.y + d.y1}];
            // Temporary hack
            d.x -= size[0] >> 1;
            d.y -= size[1] >> 1;
          }
        }
        if (i >= n) {
          cloud.stop();
          event.end(tags, bounds);
        }
      }
    }

    cloud.stop = function() {
      if (timer) {
        clearInterval(timer);
        timer = null;
      }
      return cloud;
    };

    cloud.timeInterval = function(x) {
      if (!arguments.length) return timeInterval;
      timeInterval = x == null ? Infinity : x;
      return cloud;
    };

    function place(board, tag, bounds) {
      var perimeter = [{x: 0, y: 0}, {x: size[0], y: size[1]}],
          startX = tag.x,
          startY = tag.y,
          maxDelta = Math.sqrt(size[0] * size[0] + size[1] * size[1]),
          s = spiral(size),
          dt = Math.random() < .5 ? 1 : -1,
          t = -dt,
          dxdy,
          dx,
          dy;

      while (dxdy = s(t += dt)) {
        dx = ~~dxdy[0];
        dy = ~~dxdy[1];

        if (Math.min(dx, dy) > maxDelta) break;

        tag.x = startX + dx;
        tag.y = startY + dy;

        if (tag.x + tag.x0 < 0 || tag.y + tag.y0 < 0 ||
            tag.x + tag.x1 > size[0] || tag.y + tag.y1 > size[1]) continue;
        // TODO only check for collisions within current bounds.
        if (!bounds || !cloudCollide(tag, board, size[0])) {
          if (!bounds || collideRects(tag, bounds)) {
            var sprite = tag.sprite,
                w = tag.width >> 5,
                sw = size[0] >> 5,
                lx = tag.x - (w << 4),
                sx = lx & 0x7f,
                msx = 32 - sx,
                h = tag.y1 - tag.y0,
                x = (tag.y + tag.y0) * sw + (lx >> 5),
                last;
            for (var j = 0; j < h; j++) {
              last = 0;
              for (var i = 0; i <= w; i++) {
                board[x + i] |= (last << msx) | (i < w ? (last = sprite[j * w + i]) >>> sx : 0);
              }
              x += sw;
            }
            delete tag.sprite;
            return true;
          }
        }
      }
      return false;
    }

    cloud.words = function(x) {
      if (!arguments.length) return words;
      words = x;
      return cloud;
    };

    cloud.size = function(x) {
      if (!arguments.length) return size;
      size = [+x[0], +x[1]];
      return cloud;
    };

    cloud.font = function(x) {
      if (!arguments.length) return font;
      font = d3.functor(x);
      return cloud;
    };

    cloud.rotate = function(x) {
      if (!arguments.length) return rotate;
      rotate = d3.functor(x);
      return cloud;
    };

    cloud.text = function(x) {
      if (!arguments.length) return text;
      text = d3.functor(x);
      return cloud;
    };

    cloud.spiral = function(x) {
      if (!arguments.length) return spiral;
      spiral = spirals[x + ""] || x;
      return cloud;
    };

    cloud.fontSize = function(x) {
      if (!arguments.length) return fontSize;
      fontSize = d3.functor(x);
      return cloud;
    };

    cloud.padding = function(x) {
      if (!arguments.length) return padding;
      padding = d3.functor(x);
      return cloud;
    };

    return d3.rebind(cloud, event, "on");
  }

  function cloudText(d) {
    return d.text;
  }

  function cloudFont() {
    return "serif";
  }

  function cloudFontSize(d) {
    return Math.sqrt(d.value);
  }

  function cloudRotate() {
    return (~~(Math.random() * 6) - 3) * 30;
  }

  function cloudPadding() {
    return 1;
  }

  // Fetches a monochrome sprite bitmap for the specified text.
  // Load in batches for speed.
  function cloudSprite(d, data, di) {
    if (d.sprite) return;
    c.clearRect(0, 0, (cw << 5) / ratio, ch / ratio);
    var x = 0,
        y = 0,
        maxh = 0,
        n = data.length;
    di--;
    while (++di < n) {
      d = data[di];
      c.save();
      c.font = ~~((d.size + 1) / ratio) + "px " + d.font;
      var w = c.measureText(d.text + "m").width * ratio,
          h = d.size << 1;
      if (d.rotate) {
        var sr = Math.sin(d.rotate * cloudRadians),
            cr = Math.cos(d.rotate * cloudRadians),
            wcr = w * cr,
            wsr = w * sr,
            hcr = h * cr,
            hsr = h * sr;
        w = (Math.max(Math.abs(wcr + hsr), Math.abs(wcr - hsr)) + 0x1f) >> 5 << 5;
        h = ~~Math.max(Math.abs(wsr + hcr), Math.abs(wsr - hcr));
      } else {
        w = (w + 0x1f) >> 5 << 5;
      }
      if (h > maxh) maxh = h;
      if (x + w >= (cw << 5)) {
        x = 0;
        y += maxh;
        maxh = 0;
      }
      if (y + h >= ch) break;
      c.translate((x + (w >> 1)) / ratio, (y + (h >> 1)) / ratio);
      if (d.rotate) c.rotate(d.rotate * cloudRadians);
      c.fillText(d.text, 0, 0);
      c.restore();
      d.width = w;
      d.height = h;
      d.xoff = x;
      d.yoff = y;
      d.x1 = w >> 1;
      d.y1 = h >> 1;
      d.x0 = -d.x1;
      d.y0 = -d.y1;
      x += w;
    }
    var pixels = c.getImageData(0, 0, (cw << 5) / ratio, ch / ratio).data,
        sprite = [];
    while (--di >= 0) {
      d = data[di];
      var w = d.width,
          w32 = w >> 5,
          h = d.y1 - d.y0,
          p = d.padding;
      // Zero the buffer
      for (var i = 0; i < h * w32; i++) sprite[i] = 0;
      x = d.xoff;
      if (x == null) return;
      y = d.yoff;
      var seen = 0,
          seenRow = -1;
      for (var j = 0; j < h; j++) {
        for (var i = 0; i < w; i++) {
          var k = w32 * j + (i >> 5),
              m = pixels[((y + j) * (cw << 5) + (x + i)) << 2] ? 1 << (31 - (i % 32)) : 0;
          if (p) {
            if (j) sprite[k - w32] |= m;
            if (j < w - 1) sprite[k + w32] |= m;
            m |= (m << 1) | (m >> 1);
          }
          sprite[k] |= m;
          seen |= m;
        }
        if (seen) seenRow = j;
        else {
          d.y0++;
          h--;
          j--;
          y++;
        }
      }
      d.y1 = d.y0 + seenRow;
      d.sprite = sprite.slice(0, (d.y1 - d.y0) * w32);
    }
  }

  // Use mask-based collision detection.
  function cloudCollide(tag, board, sw) {
    sw >>= 5;
    var sprite = tag.sprite,
        w = tag.width >> 5,
        lx = tag.x - (w << 4),
        sx = lx & 0x7f,
        msx = 32 - sx,
        h = tag.y1 - tag.y0,
        x = (tag.y + tag.y0) * sw + (lx >> 5),
        last;
    for (var j = 0; j < h; j++) {
      last = 0;
      for (var i = 0; i <= w; i++) {
        if (((last << msx) | (i < w ? (last = sprite[j * w + i]) >>> sx : 0))
            & board[x + i]) return true;
      }
      x += sw;
    }
    return false;
  }

  function cloudBounds(bounds, d) {
    var b0 = bounds[0],
        b1 = bounds[1];
    if (d.x + d.x0 < b0.x) b0.x = d.x + d.x0;
    if (d.y + d.y0 < b0.y) b0.y = d.y + d.y0;
    if (d.x + d.x1 > b1.x) b1.x = d.x + d.x1;
    if (d.y + d.y1 > b1.y) b1.y = d.y + d.y1;
  }

  function collideRects(a, b) {
    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;
  }

  function archimedeanSpiral(size) {
    var e = size[0] / size[1];
    return function(t) {
      return [e * (t *= .1) * Math.cos(t), t * Math.sin(t)];
    };
  }

  function rectangularSpiral(size) {
    var dy = 4,
        dx = dy * size[0] / size[1],
        x = 0,
        y = 0;
    return function(t) {
      var sign = t < 0 ? -1 : 1;
      // See triangular numbers: T_n = n * (n + 1) / 2.
      switch ((Math.sqrt(1 + 4 * sign * t) - sign) & 3) {
        case 0:  x += dx; break;
        case 1:  y += dy; break;
        case 2:  x -= dx; break;
        default: y -= dy; break;
      }
      return [x, y];
    };
  }

  // TODO reuse arrays?
  function zeroArray(n) {
    var a = [],
        i = -1;
    while (++i < n) a[i] = 0;
    return a;
  }

  var cloudRadians = Math.PI / 180,
      cw = 1 << 11 >> 5,
      ch = 1 << 11,
      canvas,
      ratio = 1;

  if (typeof document !== "undefined") {
    canvas = document.createElement("canvas");
    canvas.width = 1;
    canvas.height = 1;
    ratio = Math.sqrt(canvas.getContext("2d").getImageData(0, 0, 1, 1).data.length >> 2);
    canvas.width = (cw << 5) / ratio;
    canvas.height = ch / ratio;
  } else {
    // node-canvas support
    var Canvas = require("canvas");
    canvas = new Canvas(cw << 5, ch);
  }

  var c = canvas.getContext("2d"),
      spirals = {
        archimedean: archimedeanSpiral,
        rectangular: rectangularSpiral
      };
  c.fillStyle = "red";
  c.textAlign = "center";

  exports.cloud = cloud;
})(typeof exports === "undefined" ? d3.layout || (d3.layout = {}) : exports);

topic_words0.csv

text,size,topic access,1238,0 streets,1020,0 transportation,982,0 system,824,0 pedestrian,767,0 provide,763,0 bicycle,719,0 major,696,0 arterial,596,0 local,452,0 centers,415,0 service,388,0 connections,373,0 adjacent,337,0 arterials,335,0 facilities,317,0 modes,312,0 design,310,0 high,305,0 travel,284,0 areas,282,0 regional,275,0 serve,269,0 circulation,257,0 safe,241,0 vehicle,233,0 demand,228,0 roadway,223,0 improvements,218,0 corridors,211,0 capacity,208,0 activity,208,0 roadways,207,0 collector,202,0 modal,198,0 automobile,185,0 oriented,183,0 function,182,0 locations,182,0 light,174,0 convenient,172,0 trails,169,0 employment,156,0 classification,151,0 paths,151,0 designed,148,0 accommodate,136,0 primary,135,0 direct,135,0 type,131,0 wide,130,0 bicyclists,129,0 map,129,0 destinations,129,0 intersections,129,0 users,128,0 bikeways,126,0 complete,126,0 trail,120,0 bus,117,0 long,114,0 effective,113,0 providing,111,0 volumes,111,0 includes,110,0 standards,99,0 points,99,0 ride,99,0 truck,97,0 developments,97,0 emergency,94,0 bicycling,92,0 collectors,90,0 develop,86,0 motor,85,0 hours,80,0 additional,80,0 boulevard,79,0 balance,78,0 ridership,74,0 address,74,0 coordinate,72,0 serving,72,0 significant,72,0 stops,71,0 citywide,70,0 recreational,70,0 multiple,70,0 freeway,68,0 separated,68,0 minor,68,0 principal,68,0 highways,68,0 connect,66,0 amenities,66,0 landscaping,65,0 low,65,0 crossings,64,0 stop,64,0 sidewalks,63,0 

topic_words1.csv

text,size,topic buildings,460,1 plan,451,1 policy,442,1 neighborhoods,327,1 civic,301,1 community,249,1 strategies,235,1 existing,222,1 lots,221,1 walkable,217,1 large,207,1 arroyos,203,1 concerns,196,1 map,183,1 goal,182,1 spaces,182,1 neighborhood,182,1 streets,180,1 network,137,1 regional,136,1 addressing,131,1 compact,123,1 historic,110,1 element,105,1 valley,105,1 center,103,1 central,102,1 infill,101,1 small,95,1 space,92,1 greens,91,1 step,91,1 principles,91,1 design,89,1 blocks,88,1 drainage,87,1 drive,86,1 ave,82,1 smartcode,81,1 complete,81,1 impact,80,1 goals,80,1 legend,80,1 critical,79,1 plans,79,1 vacant,75,1 cities,74,1 current,74,1 green,72,1 sector,69,1 provided,68,1 arroyo,67,1 create,67,1 walk,67,1 proposed,65,1 fees,64,1 housing,64,1 preferred,64,1 northeast,64,1 war,63,1 eastside,63,1 officials,63,1 alleys,63,1 lined,62,1 world,61,1 mixed,59,1 created,59,1 smart,58,1 time,57,1 site,57,1 important,57,1 westside,57,1 surrounding,56,1 shed,56,1 lands,55,1 auto,54,1 homes,54,1 farmland,51,1 schools,51,1 subdivision,50,1 multiway,50,1 valuable,49,1 face,49,1 mission,49,1 owned,48,1 add,47,1 urbanism,47,1 shade,47,1 form,46,1 fabric,46,1 upper,46,1 added,46,1 sense,46,1 irrigated,45,1 title,45,1 regulations,45,1 edges,44,1 connected,43,1 fields,43,1 long,43,1 

topic_words3.csv

text,size,topic development,818,2 transit,746,2 centers,647,2 mixed,640,2 corridors,520,2 urban,443,2 city,414,2 oriented,388,2 building,359,2 areas,314,2 zoning,299,2 redevelopment,209,2 activity,198,2 blocks,195,2 districts,194,2 existing,190,2 vision,187,2 block,178,2 compact,166,2 investment,165,2 friendly,161,2 initiative,160,2 housing,158,2 standards,158,2 walking,154,2 develop,152,2 places,129,2 policies,127,2 people,125,2 stations,122,2 infill,117,2 options,114,2 sensitive,110,2 modal,108,2 walkable,106,2 design,105,2 quality,103,2 growth,103,2 creating,102,2 complete,101,2 key,99,2 private,91,2 homes,91,2 create,90,2 tod,88,2 encouraging,86,2 promotes,86,2 identify,83,2 concept,83,2 developments,83,2 mix,82,2 hubs,82,2 connected,81,2 direct,77,2 higher,77,2 vibrant,76,2 illustration,76,2 choices,75,2 built,74,2 includes,74,2 initiatives,73,2 core,68,2 corridor,67,2 scenario,65,2 jobs,64,2 shop,64,2 successful,64,2 type,62,2 principles,61,2 distance,59,2 practices,56,2 developer,53,2 destinations,53,2 exist,52,2 accommodate,51,2 sustainable,51,2 environment,51,2 central,50,2 patterns,49,2 developers,48,2 multifamily,48,2 future,47,2 pedestrian,47,2 small,46,2 investments,46,2 served,44,2 station,44,2 dense,42,2 trails,40,2 definition,40,2 similar,39,2 targeted,39,2 river,38,2 environments,38,2 natural,38,2 concentrations,36,2 walk,35,2 easy,35,2 university,35,2 boulevards,33,2