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              <body bgcolor="#000">
<div id="result">
</div>
</body>
            
          
!
            
              // マージンの設定(領域)
var margin = {top: 30, right: 20, bottom: 30, left: 50},
    width = 500 - margin.left - margin.right,
    height = 200 - margin.top - margin.bottom;

// SVGの追加
var svg = d3.select("#result").append("svg")
    .attr("width", width + margin.left + margin.right)
    .attr("height", height + margin.top + margin.bottom)
  .append("g")
    .attr("transform", "translate(" + margin.left + "," + margin.top + ")");

// 初期データ
var data = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0];

// 10分割スケール
var dataScale = d3.scaleLinear() 
    .domain([0,100])
    .rangeRound([0,10]);
// 色の取得に使う
var colorScale = d3.scaleLinear() 
    .domain([0,10])
    .range([1, 0.3]);

// 行列数
var cols = data.length;
var rows = dataScale.range()[1]; // [0, 10] の10のほうを取得

// 升目のもととなる配列を作成
var cells = new Array();
for(var i = 0; i < cols; i++){
  for(var j = 0; j < rows; j++){
    cells.push({ "i": i, "j":j });
  }
}

// 升目オブジェクト
var rects = svg.selectAll(".rects").data(cells).enter()
  .append("rect")
  .attr("x", function(d){ return (width/cols) * d.i;   } )
  .attr("y", function(d){ return (height/rows) * (rows - d.j);  } )
  .attr("width", (width / cols) - 4)
  .attr("height", (height /rows) - 3)
  //.attr("stroke-width",1)
  .attr("rx",2)
  .attr("ry",2)
  .attr("stroke","black");

// 1秒ごとに更新を呼び出し
d3.interval(update, 150);

// 再描画がするメソッド
function update(){
  // 乱数取得
  var rand = d3.randomUniform(100);  
	// 合計10個の乱数を発生
	for( var data=[], i=10; i--; ) {
		data[ data.length ] = Math.floor( rand() ) ;
	}
  
  rects.attr("fill", function(d){  
    if(dataScale(data[d.i]) >= d.j){ 
      //return "cyan";
      return d3.interpolateWarm(colorScale(d.j));
    }
    else{ return "gray" }; 
  });
}
            
          
!
999px
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