China Energy From Coal Pollution

.block

license: mit

README.md

Built with blockbuilder.org

forked from christopherGizard's block: China Energy From Coil Pollution

forked from phuquoc's block: China Energy From Coil Pollution

china.geojson

china_coal.csv

d3.slider.css

.d3-slider {
    position: relative;
    font-family: Verdana,Arial,sans-serif;
    font-size: 1.1em;
    border: 1px solid #aaaaaa;
    z-index: 2;
}

.d3-slider-horizontal {
    height: .8em;
}  

.d3-slider-range {
  background:#2980b9;
  left:0px;
  right:0px;
  height: 0.8em;
  position: absolute;
}

.d3-slider-range-vertical {
  background:#2980b9;
  left:0px;
  right:0px;
  position: absolute;
  top:0;
}

.d3-slider-vertical {
    width: .8em;
    height: 100px;
}      

.d3-slider-handle {
    position: absolute;
    width: 1.2em;
    height: 1.2em;
    border: 1px solid #d3d3d3;
    border-radius: 4px;
    background: #eee;
    background: linear-gradient(to bottom, #eee 0%, #ddd 100%);
    z-index: 3;
}

.d3-slider-handle:hover {
    border: 1px solid #999999;
}

.d3-slider-horizontal .d3-slider-handle {
    top: -.3em;
    margin-left: -.6em;
}

.d3-slider-axis {
    position: relative;
    z-index: 1;    
}

.d3-slider-axis-bottom {
    top: .8em;
}

.d3-slider-axis-right {
    left: .8em;
}

.d3-slider-axis path {
    stroke-width: 0;
    fill: none;
}

.d3-slider-axis line {
    fill: none;
    stroke: #aaa;
    shape-rendering: crispEdges;
}

.d3-slider-axis text {
    font-size: 11px;
}

.d3-slider-vertical .d3-slider-handle {
    left: -.25em;
    margin-left: 0;
    margin-bottom: -.6em;      
}

d3.slider.js

/*
    D3.js Slider
    Inspired by jQuery UI Slider
    Copyright (c) 2013, Bjorn Sandvik - http://blog.thematicmapping.org
    BSD license: http://opensource.org/licenses/BSD-3-Clause
*/
(function (root, factory) {
  if (typeof define === 'function' && define.amd) {
    // AMD. Register as an anonymous module.
    define(['d3'], factory);
  } else if (typeof exports === 'object') {
    if (process.browser) {
      // Browserify. Import css too using cssify.
      require('./d3.slider.css');
    }
    // Node. Does not work with strict CommonJS, but
    // only CommonJS-like environments that support module.exports,
    // like Node.
    module.exports = factory(require('d3'));
  } else {
    // Browser globals (root is window)
    root.d3.slider = factory(root.d3);
  }
}(this, function (d3) {
return function module() {

  "use strict";

  // Public variables width default settings
  var min = 0,
      max = 100,
      step = 0.01,
      animate = true,
      orientation = "horizontal",
      axis = false,
      margin = 50,
      value,
      active = 1,
      snap = false,
      scale;

  // Private variables
  var axisScale,
      dispatch = d3.dispatch("slide", "slideend"),
      formatPercent = d3.format(".2%"),
      tickFormat = d3.format(".0"),
      handle1,
      handle2 = null,
      divRange,
      sliderLength;

  function slider(selection) {
    selection.each(function() {

      // Create scale if not defined by user
      if (!scale) {
        scale = d3.scale.linear().domain([min, max]);
      }

      // Start value
      value = value || scale.domain()[0];

      // DIV container
      var div = d3.select(this).classed("d3-slider d3-slider-" + orientation, true);
      
      var drag = d3.behavior.drag();
      drag.on('dragend', function () {
        dispatch.slideend(d3.event, value);
      })

      // Slider handle
      //if range slider, create two
      // var divRange;

      if (toType(value) == "array" && value.length == 2) {
        handle1 = div.append("a")
          .classed("d3-slider-handle", true)
          .attr("xlink:href", "#")
          .attr('id', "handle-one")
          .on("click", stopPropagation)
          .call(drag);
        handle2 = div.append("a")
          .classed("d3-slider-handle", true)
          .attr('id', "handle-two")
          .attr("xlink:href", "#")
          .on("click", stopPropagation)
          .call(drag);
      } else {
        handle1 = div.append("a")
          .classed("d3-slider-handle", true)
          .attr("xlink:href", "#")
          .attr('id', "handle-one")
          .on("click", stopPropagation)
          .call(drag);
      }
      
      // Horizontal slider
      if (orientation === "horizontal") {

        div.on("click", onClickHorizontal);
        
        if (toType(value) == "array" && value.length == 2) {
          divRange = d3.select(this).append('div').classed("d3-slider-range", true);

          handle1.style("left", formatPercent(scale(value[ 0 ])));
          divRange.style("left", formatPercent(scale(value[ 0 ])));
          drag.on("drag", onDragHorizontal);

          var width = 100 - parseFloat(formatPercent(scale(value[ 1 ])));
          handle2.style("left", formatPercent(scale(value[ 1 ])));
          divRange.style("right", width+"%");
          drag.on("drag", onDragHorizontal);

        } else {
          handle1.style("left", formatPercent(scale(value)));
          drag.on("drag", onDragHorizontal);
        }
        
        sliderLength = parseInt(div.style("width"), 10);

      } else { // Vertical

        div.on("click", onClickVertical);
        drag.on("drag", onDragVertical);
        if (toType(value) == "array" && value.length == 2) {
          divRange = d3.select(this).append('div').classed("d3-slider-range-vertical", true);

          handle1.style("bottom", formatPercent(scale(value[ 0 ])));
          divRange.style("bottom", formatPercent(scale(value[ 0 ])));
          drag.on("drag", onDragVertical);

          var top = 100 - parseFloat(formatPercent(scale(value[ 1 ])));
          handle2.style("bottom", formatPercent(scale(value[ 1 ])));
          divRange.style("top", top+"%");
          drag.on("drag", onDragVertical);

        } else {
          handle1.style("bottom", formatPercent(scale(value)));
          drag.on("drag", onDragVertical);
        }
        
        sliderLength = parseInt(div.style("height"), 10);

      }
      
      if (axis) {
        createAxis(div);
      }


      function createAxis(dom) {

        // Create axis if not defined by user
        if (typeof axis === "boolean") {

          axis = d3.svg.axis()
              .ticks(Math.round(sliderLength / 100))
              .tickFormat(tickFormat)
              .orient((orientation === "horizontal") ? "bottom" :  "right");

        }

        // Copy slider scale to move from percentages to pixels
        axisScale = scale.ticks ? scale.copy().range([0, sliderLength]) : scale.copy().rangePoints([0, sliderLength], 0.5);
          axis.scale(axisScale);

          // Create SVG axis container
        var svg = dom.append("svg")
            .classed("d3-slider-axis d3-slider-axis-" + axis.orient(), true)
            .on("click", stopPropagation);

        var g = svg.append("g");

        // Horizontal axis
        if (orientation === "horizontal") {

          svg.style("margin-left", -margin + "px");

          svg.attr({
            width: sliderLength + margin * 2,
            height: margin
          });

          if (axis.orient() === "top") {
            svg.style("top", -margin + "px");
            g.attr("transform", "translate(" + margin + "," + margin + ")");
          } else { // bottom
            g.attr("transform", "translate(" + margin + ",0)");
          }

        } else { // Vertical

          svg.style("top", -margin + "px");

          svg.attr({
            width: margin,
            height: sliderLength + margin * 2
          });

          if (axis.orient() === "left") {
            svg.style("left", -margin + "px");
            g.attr("transform", "translate(" + margin + "," + margin + ")");
          } else { // right          
            g.attr("transform", "translate(" + 0 + "," + margin + ")");
          }

        }

        g.call(axis);

      }

      function onClickHorizontal() {
        if (toType(value) != "array") {
          var pos = Math.max(0, Math.min(sliderLength, d3.event.offsetX || d3.event.layerX));
          moveHandle(scale.invert ? 
                      stepValue(scale.invert(pos / sliderLength))
                    : nearestTick(pos / sliderLength));
        }
      }

      function onClickVertical() {
        if (toType(value) != "array") {
          var pos = sliderLength - Math.max(0, Math.min(sliderLength, d3.event.offsetY || d3.event.layerY));
          moveHandle(scale.invert ? 
                      stepValue(scale.invert(pos / sliderLength))
                    : nearestTick(pos / sliderLength));
        }
      }

      function onDragHorizontal() {
        if ( d3.event.sourceEvent.target.id === "handle-one") {
          active = 1;
        } else if ( d3.event.sourceEvent.target.id == "handle-two" ) {
          active = 2;
        }
        var pos = Math.max(0, Math.min(sliderLength, d3.event.x));
        moveHandle(scale.invert ? 
                    stepValue(scale.invert(pos / sliderLength))
                  : nearestTick(pos / sliderLength));
      }

      function onDragVertical() {
        if ( d3.event.sourceEvent.target.id === "handle-one") {
          active = 1;
        } else if ( d3.event.sourceEvent.target.id == "handle-two" ) {
          active = 2;
        }
        var pos = sliderLength - Math.max(0, Math.min(sliderLength, d3.event.y))
        moveHandle(scale.invert ? 
                    stepValue(scale.invert(pos / sliderLength))
                  : nearestTick(pos / sliderLength));
      }

      function stopPropagation() {
        d3.event.stopPropagation();
      }

    });

  }

  // Move slider handle on click/drag
  function moveHandle(newValue) {
    var currentValue = toType(value) == "array"  && value.length == 2 ? value[active - 1]: value,
        oldPos = formatPercent(scale(stepValue(currentValue))),
        newPos = formatPercent(scale(stepValue(newValue))),
        position = (orientation === "horizontal") ? "left" : "bottom";
    if (oldPos !== newPos) {

      if (toType(value) == "array" && value.length == 2) {
        value[ active - 1 ] = newValue;
        if (d3.event) {
          dispatch.slide(d3.event, value );
        };
      } else {
        if (d3.event) {
          dispatch.slide(d3.event.sourceEvent || d3.event, value = newValue);
        };
      }

      if ( value[ 0 ] >= value[ 1 ] ) return;
      if ( active === 1 ) {
        if (toType(value) == "array" && value.length == 2) {
          (position === "left") ? divRange.style("left", newPos) : divRange.style("bottom", newPos);
        }

        if (animate) {
          handle1.transition()
              .styleTween(position, function() { return d3.interpolate(oldPos, newPos); })
              .duration((typeof animate === "number") ? animate : 250);
        } else {
          handle1.style(position, newPos);
        }
      } else {
        
        var width = 100 - parseFloat(newPos);
        var top = 100 - parseFloat(newPos);

        (position === "left") ? divRange.style("right", width + "%") : divRange.style("top", top + "%");
        
        if (animate) {
          handle2.transition()
              .styleTween(position, function() { return d3.interpolate(oldPos, newPos); })
              .duration((typeof animate === "number") ? animate : 250);
        } else {
          handle2.style(position, newPos);
        }
      }
    }
  }

  // Calculate nearest step value
  function stepValue(val) {

    if (val === scale.domain()[0] || val === scale.domain()[1]) {
      return val;
    }

    var alignValue = val;
    if (snap) {
      alignValue = nearestTick(scale(val));
    } else{
      var valModStep = (val - scale.domain()[0]) % step;
      alignValue = val - valModStep;

      if (Math.abs(valModStep) * 2 >= step) {
        alignValue += (valModStep > 0) ? step : -step;
      }
    };

    return alignValue;

  }

  // Find the nearest tick
  function nearestTick(pos) {
    var ticks = scale.ticks ? scale.ticks() : scale.domain();
    var dist = ticks.map(function(d) {return pos - scale(d);});
    var i = -1,
        index = 0,
        r = scale.ticks ? scale.range()[1] : scale.rangeExtent()[1];
    do {
        i++;
        if (Math.abs(dist[i]) < r) {
          r = Math.abs(dist[i]);
          index = i;
        };
    } while (dist[i] > 0 && i < dist.length - 1);

    return ticks[index];
  };

  // Return the type of an object
  function toType(v) {
    return ({}).toString.call(v).match(/\s([a-zA-Z]+)/)[1].toLowerCase();
  };

  // Getter/setter functions
  slider.min = function(_) {
    if (!arguments.length) return min;
    min = _;
    return slider;
  };

  slider.max = function(_) {
    if (!arguments.length) return max;
    max = _;
    return slider;
  };

  slider.step = function(_) {
    if (!arguments.length) return step;
    step = _;
    return slider;
  };

  slider.animate = function(_) {
    if (!arguments.length) return animate;
    animate = _;
    return slider;
  };

  slider.orientation = function(_) {
    if (!arguments.length) return orientation;
    orientation = _;
    return slider;
  };

  slider.axis = function(_) {
    if (!arguments.length) return axis;
    axis = _;
    return slider;
  };

  slider.margin = function(_) {
    if (!arguments.length) return margin;
    margin = _;
    return slider;
  };

  slider.value = function(_) {
    if (!arguments.length) return value;
    if (value) {
      moveHandle(stepValue(_));
    };
    value = _;
    return slider;
  };

  slider.snap = function(_) {
    if (!arguments.length) return snap;
    snap = _;
    return slider;
  };

  slider.scale = function(_) {
    if (!arguments.length) return scale;
    scale = _;
    return slider;
  };

  d3.rebind(slider, dispatch, "on");

  return slider;

}
}));

index.html

<!DOCTYPE html>
<meta charset="utf-8">
<link rel="stylesheet" href="d3.slider.css" />
<style>

.background {
  fill: none;
  pointer-events: all;
}

#states {
  fill: #ccc;
}

#states .active {
  fill: orange;
}
  
#slider3 {
  margin: 20px 0 10px 20px;
  width: 900px;
}
  
circle{

  fill: brown;
  fill-opacity: .3;
  stroke: black;
  stroke-linejoin: round;
  stroke-width: .5px;
  stroke-opacity: .5;
}
  
div.tooltip {
  
  color: #222;
  background-color: #fff;
  padding: .5em;
  text-shadow: #f5f5f5 0 1px 0;
  border-radius: 23.08px;
  opacity: 0.9;
  position: absolute;
}

.hidden {
        display: none;
 }

</style>
<body>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script src="https://d3js.org/topojson.v1.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.10.3/moment.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.3/underscore-min.js"></script>
<script src="./d3.slider.js"></script> 
  
<div id="slider3"></div>
  
<script>

var width = 960,
    height = 500,
    centered;

var tooltip = d3.select("body").append("div")
							.attr("class", "hidden tooltip")	
var radius = d3.scaleSqrt()
    .domain([0, 1e6])
    .range([0, 15]);
  
var projection = d3.geoMercator()
                   .center([110, 12]) 
                   .scale([600]) 
                   .translate([550,550])
                   .precision([.1]);

var path = d3.geoPath()
    .projection(projection);

var svg = d3.select("body").append("svg")
    .attr("width", width)
    .attr("height", height);

svg.append("rect")
    .attr("class", "background")
    .attr("width", width)
    .attr("height", height)
    .on("click", clicked);

var g = svg.append("g");

drawMap(1);

var minDateUnix = moment('2014-07-01', "YYYY MM DD").unix();
var maxDateUnix = moment('2015-07-21', "YYYY MM DD").unix();
var secondsInDay = 60 * 60 * 24;

var slider =  d3.select('#slider3')
		slider.attr("type", "range")
    .attr("value", 0)
    .attr("min", 0)
    .attr("max", 500)
    .attr("step", 10)
    .on("input", slided);

  
  
function slided(d) {
 //           zoom.scaleTo(svg, d3.select(this).property("value"));
 }
    
    
    
// Function to render China's map and plot power plants positions
function drawMap(currentYear){
  var vector =svg.append("path")
			.attr("id","point");
  
  d3.json("china.geojson", function(error, china) {
    if (error) throw error;

    g.append("g")
      .attr("id", "states")
      .selectAll("path")
      .data(china.features)
      .enter().append("path")
      .attr("d", path)
      .on("click",clicked);
  });
  
  d3.csv("china_coal.csv",function(error,plant) {
  if (error) throw error;
  	svg.selectAll(".circle")
			.data(plant).enter()
			.append("circle")
    	.attr('class', 'circle')
			.attr("cx", function (d) { return projection([d.longitude,d.latitude])[0]; })
			.attr("cy", function (d) { return projection([d.longitude,d.latitude])[1]; })
			.attr("r", function (d) { return 10*radius(d.capacity_mw)+"px"; })
    	//ajouter un tooltip avec le nom et la valeur de la région
    
      .on('mouseover', function(d) {
      d3.selectAll('.circle')
        .filter(function(e) {
        return e !== d
    	})
      .style('opacity', .09)
      var mouse = d3.mouse(svg.node()).map(function(x) {
        return parseInt(x)
      })
      tooltip.classed("hidden", false)
        .attr("style", "left:" + (mouse[0] + 20) +
              "px; top:" + (mouse[1] - 40) + "px")
        .html(d.name + ": " + d.capacity_mw + "mW in " + d.commissioning_year)
    })
    
     .on('mouseout', function(d) {
     tooltip.classed("hidden", true)
     d3.selectAll('.circle')
     .filter(function(e) {
      	return e !== d
    })
    .style('opacity', 1)
    });
  });
  
  
}


  

// clicked function to zoom in
function clicked(d) {
  var x, y, k;

  if (d && centered !== d) {
    var centroid = path.centroid(d);
    x = centroid[0];
    y = centroid[1];
    k = 4;
    centered = d;
  } else {
    x = width / 2;
    y = height / 2;
    k = 1;
    centered = null;
  }

  g.selectAll("path")
      .classed("active", centered && function(d) { return d === centered; });

  g.transition()
      .duration(750)
      .attr("transform", "translate(" + width / 2 + "," + height / 2 + ")scale(" + k + ")translate(" + -x + "," + -y + ")")
      .style("stroke-width", 1.5 / k + "px");
  
  svg.selectAll("circle").transition()
      .duration(750)
      .attr("transform", "translate(" + width / 2 + "," + height / 2 + ")scale(" + k + ")translate(" + -x + "," + -y + ")")
      .style("stroke-width", 1.5 / k + "px")
  		.attr("d",path);
}

</script>