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Hl={n:"ns-resize",e:"ew-resize",s:"ns-resize",w:"ew-resize",nw:"nwse-resize",ne:"nesw-resize",se:"nwse-resize",sw:"nesw-resize"},Ol=[["n","e","s","w","nw","ne","se","sw"],["e","w"],["n","s"],[]],Il=ac.format=gc.timeFormat,Yl=Il.utc,Zl=Yl("%Y-%m-%dT%H:%M:%S.%LZ");Il.iso=Date.prototype.toISOString&&+new Date("2000-01-01T00:00:00.000Z")?Jo:Zl,Jo.parse=function(n){var t=new Date(n);return isNaN(t)?null:t},Jo.toString=Zl.toString,ac.second=Ft(function(n){return new cc(1e3*Math.floor(n/1e3))},function(n,t){n.setTime(n.getTime()+1e3*Math.floor(t))},function(n){return n.getSeconds()}),ac.seconds=ac.second.range,ac.seconds.utc=ac.second.utc.range,ac.minute=Ft(function(n){return new cc(6e4*Math.floor(n/6e4))},function(n,t){n.setTime(n.getTime()+6e4*Math.floor(t))},function(n){return n.getMinutes()}),ac.minutes=ac.minute.range,ac.minutes.utc=ac.minute.utc.range,ac.hour=Ft(function(n){var t=n.getTimezoneOffset()/60;return new 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1!=n.getDate()}],["%B",function(n){return n.getMonth()}],["%Y",Ne]]),Bl={range:function(n,t,e){return ta.range(Math.ceil(n/e)*e,+t,e).map(Ko)},floor:y,ceil:y};Xl.year=ac.year,ac.scale=function(){return Go(ta.scale.linear(),Xl,$l)};var Wl=Xl.map(function(n){return[n[0].utc,n[1]]}),Jl=Yl.multi([[".%L",function(n){return n.getUTCMilliseconds()}],[":%S",function(n){return n.getUTCSeconds()}],["%I:%M",function(n){return n.getUTCMinutes()}],["%I %p",function(n){return n.getUTCHours()}],["%a %d",function(n){return n.getUTCDay()&&1!=n.getUTCDate()}],["%b %d",function(n){return 1!=n.getUTCDate()}],["%B",function(n){return n.getUTCMonth()}],["%Y",Ne]]);Wl.year=ac.year.utc,ac.scale.utc=function(){return Go(ta.scale.linear(),Wl,Jl)},ta.text=At(function(n){return n.responseText}),ta.json=function(n,t){return Nt(n,"application/json",Qo,t)},ta.html=function(n,t){return Nt(n,"text/html",na,t)},ta.xml=At(function(n){return n.responseXML}),"function"==typeof define&&define.amd?define(ta):"object"==typeof module&&module.exports&&(module.exports=ta),this.d3=ta}();;
!function(){function n(n){function e(){for(;i=a<c.length&&n>p;){var u=a++,e=c[u],o=t.call(e,1);o.push(l(u)),++p,e[0].apply(null,o)}}function l(n){return function(u,t){--p,null==s&&(null!=u?(s=u,a=d=0/0,o()):(c[n]=t,--d?i||e():o()))}}function o(){null!=s?m(s):f?m(s,c):m.apply(null,[s].concat(c))}var r,i,f,c=[],a=0,p=0,d=0,s=null,m=u;return n||(n=1/0),r={defer:function(){return s||(c.push(arguments),++d,e()),r},await:function(n){return m=n,f=!1,d||o(),r},awaitAll:function(n){return m=n,f=!0,d||o(),r}}}function u(){}var t=[].slice;n.version="1.0.7","function"==typeof define&&define.amd?define(function(){return n}):"object"==typeof module&&module.exports?module.exports=n:this.queue=n}();;
var width               = window.screen.width;
var height              = window.screen.height;    

var xy                  = d3.geo.mercator()
                            .scale(8000)
                            // .translate([width/2, height/2])
                            .translate([width/1.5, height/1.6])
                            .center([5.8,52]);

var scale               = 1;
var prevScale           = 1;
var scaleFunc           = d3.scale.linear()
                            .range([1, .5])
                            .domain([1, 8]);

function range(min, max) {
    return [Math.round(min * scale), Math.round(max * scale)];
}

var path                = d3.geo.path();

var tooltip_place = d3.select("body")
    .append("div")
        .attr("class", "tooltip tooltip--place")
        .style("opacity", 0);

var tooltip_earthquake = d3.select("body")
    .append("div")
        .attr("class", "tooltip tooltip--earthquake")
        .style("opacity", 0);

var main, map, data, brush;

function init() {

    var zoom                = d3.behavior.zoom()
                                .scaleExtent([1, 8])
                                .on("zoom", move);

        main                = d3.select('#map').append('svg')
                                .on("click", function(d) {
                                    tooltip_place = d3.select(".tooltip--place").style("opacity", 0);
                                    tooltip_earthquake = d3.select(".tooltip--earthquake").style("opacity", 0);
                                })
                                .call(zoom)
                                .append("g");

        map                 = {
                                'gasfields'     : main.append("g").attr("id", "gasfields"),
                                'places'        : main.append("g").attr("id", "places"),
                                'boreholes'     : main.append("g").attr("id", "boreholes"),
                                'earthquakes'   : main.append("g").attr("id", "earthquakes"),
                            }

        brush               = d3.select('#brush').append('svg')
                                .attr('height', 100)
                                .append('g');

    setBrush(data.earthquakes, brush, data.gasfields, data.boreholes);

    var legend = new Legend('#legend', [
      {color: "rgba(198, 60, 9, .50)", label: "Earthquakes", rounded: true},
      {color: "rgba(73, 188, 239, .50)", label: "Cities", rounded: true},
      {color: "rgba(0, 0, 0, .75)", label: "Boreholes", rounded: true},
      {color: "rgba(0, 0, 0, .25)", label: "Gasfields", rounded: false}
    ]);

    legend.draw();

    draw();
}

window.onresize = function(event) {
    draw();
};

function draw() {
    prevScale = scale;
    for(var name in map) {
        main.select('#' + name).selectAll("*").remove();
    }

    drawBarChart(data.earthquakes);

    drawEarthquakes(data.earthquakes, map.earthquakes);

    drawPlaces(data.places.filter(function(d) {
        return d.properties.population > 1000;
    }), map.places);

    drawGasfields(data.gasfields, map.gasfields);

    drawBoreholes(data.boreholes.filter(function(d) {
        return new Date(d.properties.end_date) > new Date('1986-01-01T00:00:00Z');
    }), map.boreholes);
}

queue()
    .defer(request, "./datasets/earthquakes.geojson")
    .defer(request, "./datasets/places.geojson")
    .defer(request, "./datasets/gasfields.geojson")
    .defer(request, "./datasets/boreholes.geojson")
    .await(function(error, earthquakes, places, gasfields, boreholes) { 
        data = {
            'earthquakes': earthquakes,
            'places': places,
            'gasfields': gasfields,
            'boreholes': boreholes,
        }

        init(data);
    });

function request(url, callback) {
    d3.json(url, function(err, data) {
        if(!err) {
            callback(null, data.features);
        }
        else {
            callback(err);
        }
    });
}

var throttleTimer;
function throttle() {
  window.clearTimeout(throttleTimer);
    throttleTimer = window.setTimeout(function() {
        draw();
    }, 100);
}

function move() {
    tooltip_place = d3.select(".tooltip--place").style("opacity", 0);
    tooltip_earthquake = d3.select(".tooltip--earthquake").style("opacity", 0);

    main.attr("transform", "translate(" + d3.event.translate + ")scale(" + d3.event.scale + ")");
    scale = scaleFunc(d3.event.scale);

    if(prevScale !== scale) {
        console.log(scale);
        throttle();
    }  
}
;

var barData;
var vis;

function countMagnitude(json, key, low, high) {
    var count = 0;

    for(var i= 0; i < json.length; i++) {
        if(Number(json[i].properties[key]) >= low && Number(json[i].properties[key]) < high) {
            count++;
        }
    }

    return count;
}

function updateBarChart(data) {
    var first = countMagnitude(data, 'mag', 0, 1);
    var second = countMagnitude(data, 'mag', 1, 2);
    var third = countMagnitude(data, 'mag', 2, 3);
    var fourth = countMagnitude(data, 'mag', 3, 4);

    barData = [{
        x : '0-1',
        y : first
    }, {
        x : '1-2',
        y : second
    }, {
        x : '2-3',
        y : third
    }, {
        x : '3-4',
        y : fourth
    }];

    vis.select(".y").remove();

        xRange = d3.scale.ordinal().rangeRoundBands([MARGINS.left, WIDTH - MARGINS.right], 0.1).domain(barData.map(function (d) {
            return d.x;
        })),


        yRange = d3.scale.linear().range([HEIGHT - MARGINS.top, MARGINS.bottom]).domain([0,
            d3.max(barData, function (d) {
                return d.y;
            })
        ]),

        xAxis = d3.svg.axis()
            .scale(xRange)
            .tickSize(5)
            .tickSubdivide(true),

        yAxis = d3.svg.axis()
            .scale(yRange)
            .tickSize(5)
            .orient("left")
            .tickSubdivide(true);

    vis.append('svg:g')
        .attr('class', 'x axis')
        .attr('transform', 'translate(0,' + (HEIGHT - MARGINS.bottom) + ')')
        .call(xAxis);

    vis.append('svg:g')
        .attr('class', 'y axis')
        .attr('transform', 'translate(' + (MARGINS.left) + ',0)')
        .call(yAxis);

    var bar = vis.selectAll("rect")
        .data(barData, function(d) { return d.x; });

    bar.enter().append("rect")
        .attr("class", "bar")
        .attr("x", function(d) { return xRange(d.x); })
        .attr("y", function(d) { return yRange(d.y); })
        .attr("height", 0)
        .attr("width",xRange.rangeBand())
        .style("fill", "#F88180")
        .style("fill-opacity", 0)
        .transition()
        // .delay(function(d, i) {
        //     return i / barData.length * 2000;
        // })
        // .duration(1000)
        .style("fill-opacity", .5)
        .attr("height", function(d) { return ((HEIGHT - MARGINS.bottom) - yRange(d.y)); })
        
// removed data:
    bar.exit()
    .transition()
        .attr("height", 0)
        .style("fill-opacity", 0)
        .remove();
// updated data:
    bar
    	.transition()
        .attr("y", function(d) { return  yRange(d.y); })
        .attr("height", function(d) { return ((HEIGHT - MARGINS.bottom) - yRange(d.y)); });
}

function drawBarChart(data) {

    var first = countMagnitude(data, 'mag', 0, 1);
    var second = countMagnitude(data, 'mag', 1, 2);
    var third = countMagnitude(data, 'mag', 2, 3);
    var fourth = countMagnitude(data, 'mag', 3, 4);

    barData = [{
        p : 1,
        x : '0-1',
        y : first
    }, {
        p : 2,
        x : '1-2',
        y : second
    }, {
        p : 3,
        x : '2-3',
        y : third
    }, {
        p : 4,
        x : '3-4',
        y : fourth
    }];

    vis = d3.select('#barchart'),
        WIDTH = 400,
        HEIGHT = 200,
        MARGINS = {
            top: 20,
            right: 20,
            bottom: 20,
            left: 50
        },
        xRange = d3.scale.ordinal().rangeRoundBands([MARGINS.left, WIDTH - MARGINS.right], 0.1).domain(barData.map(function (d) {
            return d.x;
        })),


        yRange = d3.scale.linear().range([HEIGHT - MARGINS.top, MARGINS.bottom]).domain([0,
            d3.max(barData, function (d) {
                return d.y;
            })
        ]),

        xAxis = d3.svg.axis()
            .scale(xRange)
            .tickSize(5)
            .tickSubdivide(true),

        yAxis = d3.svg.axis()
            .scale(yRange)
            .tickSize(5)
            .orient("left")
            .tickSubdivide(true);


    vis.append('svg:g')
        .attr('class', 'x axis')
        .attr('transform', 'translate(0,' + (HEIGHT - MARGINS.bottom) + ')')
        .call(xAxis);

    vis.append('svg:g')
        .attr('class', 'y axis')
        .attr('transform', 'translate(' + (MARGINS.left) + ',0)')
        .call(yAxis);


    vis.selectAll('rect')
        .data(barData)
        .enter()
        .append('rect')
        .attr('x', function (d) {
            return xRange(d.x);
        })
        .attr('y', function (d) {
            return yRange(d.y);
        })
        .attr('width', xRange.rangeBand())

        .attr('height', function (d) {
            return ((HEIGHT - MARGINS.bottom) - yRange(d.y));
        })
        .attr("width",xRange.rangeBand())
        .style("fill", "#F88180")
        .style("fill-opacity", 0)
        .transition()
        .delay(function(d, i) {
            return i / barData.length * 2000;
        })
        .duration(1000)
        .style("fill-opacity", .75);
        
        // .on('mouseover',function(d){
        //     // if(clickedBar != this) {
        //     //     d3.select(this)
        //     //         .attr('fill','orange');
        //     // }
        // })
        // .on('mouseout',function(d){
        //     // if(clickedBar != this) {
        //     //     d3.select(this)
        //     //         .attr('fill','grey');
        //     // }
        // });
};
function drawBoreholes(dataset, map) {
    // get any existing circles
    var boreholes = map.selectAll("circle").data(dataset)

    // var radius = d3.scale.linear()
    //     .range(range(1, 1))
    //     .domain([1, 1]);

    boreholes.enter()
        .append("circle")
        .attr("cx", function(d) {
            return xy(d.geometry.coordinates)[0]
        })
        .attr("cy", function(d) {
            return xy(d.geometry.coordinates)[1]
        })
        // .attr("r", 0)
        .style("fill", "black")
        .style("fill-opacity", 0)
        // .transition()
        // .delay(function(d, i) {
        //     return i / dataset.length * 1000;
        // })
        // .duration(1000)
        .attr("r", 1)
        .style("fill-opacity", 0.25);

    // remove circles for old earthquakes no longer in data
    boreholes.exit()
        .transition()
        .attr("r", 0)
        .style("fill-opacity", 0)
        .remove();
};
function setBrush(dataset, svg, gasfields, boreholes) {
    var timeExtent = d3.extent(dataset, function(d) {
        return new Date(d.properties.date);
    });

    var height = 100;

    var radius = d3.scale.linear()
        .range(range(0, 50))
        .domain([0, 5]);

    var colourScale = d3.scale.sqrt()
        .range([0, 1])
        .domain([0, 5]);

    var fillOpacity = d3.scale.sqrt()
        .range([0, .2])
        .domain([0, 5]);

    var colourInterpolator = d3.interpolateHsl("#C63C09", "#F88180");
                   //colours can be specified as any CSS colour string

    var x = d3.time.scale()
        .range([0, width])
        .domain(timeExtent);

    var y = d3.scale.linear()
        .domain([-5, 5])
        .range([0, height]);

    var brush = d3.svg.brush()
        .x(x)
        .on('brushend', brushend);

    svg.append("rect")
        .attr("class", "grid-background")
        .attr("width", width)
        .attr("height", height);

    svg.append("g")
        .attr("class", "grid")
        .attr("transform", "translate(0," + height + ")")
        .call(
            d3.svg.axis()
            .scale(x)
            .ticks(40)
            .tickSize(-height)
        )
        .selectAll(".tick")
        .data(
            x.ticks(20), function(d) { 
                return d; 
            }
        )
        .exit()
        .classed("minor", true);

    svg.append("g")
        .attr("class", "grid")
        .attr("transform", "translate(0, 0)")
        .call(
            d3.svg.axis()
            .scale(y)
            .ticks(10)
            .orient("left")
            .tickSize(-width)
        )
        .selectAll(".tick")
        .data(
            y.ticks(5), function(d) { 
                return d; 
            }
        )
        .exit()
        .classed("minor", true);

    svg.append("g")
        .attr("class", "axis axis--x")
        .attr("transform", "translate(0, -5)")
        .call(
            d3.svg.axis()
            .scale(x)
            .ticks(10)
        );

    svg.append("g")
        .attr("class", "axis axis--y")
        .attr("transform", "translate(30,0)")
        .call(
            d3.svg.axis()
            .scale(y)
            .orient('left')
            .ticks(5)
        );

    svg.selectAll('circle.quake')
        .data(dataset)
        .enter()
        .append('circle')
        .attr('transform', function(d) {
            return 'translate(' + [x(new Date(d.properties.date)), height / 2] + ')';
        })
        .attr("r", function(d) {
            return 0;
        })
        .style("fill", function(d) {
            return colourInterpolator(colourScale(Math.abs(d.properties.mag)));
        })
        .style("fill-opacity", 0)
        .transition()
        .delay(function(d, i) {
            return i / dataset.length * 2000;
        })
        .duration(1000)
        .attr("r", function(d) {
            return radius(Math.abs(d.properties.mag));
        })
        .style("fill-opacity", function(d) {
            return fillOpacity(Math.abs(d.properties.mag));
        });


    svg.append('g')
        .attr('class', 'x brush')
        .call(brush)
        .selectAll('rect')
        .attr('height', height);

    function brushend() {
        if (!d3.event.sourceEvent) return; // only transition after input
        var extent0 = brush.extent(),
            extent1 = extent0.map(d3.time.year.round);

        d3.select(this).transition()
        .call(brush.extent(extent1))
        .call(brush.event);

        var filterEarthquakes, filterGasfield, filterBoreholes;
            // If the user has selected no brush area, share everything.
        if (brush.empty()) {
            filterEarthquakes = function() { return true; }

            filterGasfield = function() { return true; }

            filterBoreholes = function() { return true; }
        } 
        else {
            // Otherwise, restrict features to only things in the brush extent.
            filterEarthquakes = function(feature) {
                return new Date(feature.properties.date) > (+brush.extent()[0]) &&
                    new Date(feature.properties.date) < (+brush.extent()[1]);
            };

            filterGasfield = function(feature) {
                return new Date(feature.properties.production) <= (+brush.extent()[1]);
            };

            filterBoreholes = function(feature) {
                return new Date(feature.properties.start_date) <= (+brush.extent()[1]) && 
                new Date(feature.properties.end_date) >= (+brush.extent()[0]);
            };
        }

        data.earthquakes = dataset.filter(filterEarthquakes);
        data.gasfields = gasfields.filter(filterGasfield);
        data.boreholes = boreholes.filter(filterBoreholes);

        drawEarthquakes(data.earthquakes, map.earthquakes);
        drawGasfields(data.gasfields, map.gasfields);
        drawBoreholes(data.boreholes, map.boreholes);

        updateBarChart(data.earthquakes);
    }
};
function drawEarthquakes(dataset, map) {
    // get any existing circles
    var earthquakes = map.selectAll("circle").data(dataset);

    var radius = d3.scale.linear()
        .range(range(0, 10))
        .domain([0, 5]);

    var colourScale = d3.scale.sqrt()
        .range([0, 1])
        .domain([0, 5]);

    var fillOpacity = d3.scale.sqrt()
        .range([0, .2])
        .domain([0, 5]);
                    
    var colourInterpolator = d3.interpolateHsl("#C63C09", "#F88180");
                   //colours can be specified as any CSS colour string

    // add new circles for new earthquakes
    
    earthquakes.enter()
        .append("circle")
        .attr("cx", function(d) {
            return xy(d.geometry.coordinates)[0]
        })
        .attr("cy", function(d) {
            return xy(d.geometry.coordinates)[1]
        })
        .attr("r", function(d) {
            return 0;
        })
        .on("mouseover", function(d) {
            tooltip_place = d3.select(".tooltip--place").style("opacity", 0);
              
            tooltip_earthquake.transition()
                .duration(500)  
                .style("opacity", 0);
            tooltip_earthquake.transition()
                .duration(200)  
                .style("opacity", .9);  
            tooltip_earthquake.html(d.properties.location + " <span class=\"magnitude\">" + d.properties.mag + "</span> <span class=\"date\">" + new Date(d.properties.date).toDateString()+ "</span>")
                .style("left", (d3.event.pageX) + "px")          
                .style("top", (d3.event.pageY - 28) + "px");
            })
        .style("fill", function(d) {
            return colourInterpolator(colourScale(Math.abs(d.properties.mag)));
        })
        .style("fill-opacity", 0)
        .transition()
        .delay(function(d, i) {
            return i / dataset.length * 2000;
        })
        .duration(1000)
        .attr("r", function(d) {
            return radius(Math.abs(d.properties.mag));
        })
        .style("fill-opacity", function(d) {
            return fillOpacity(Math.abs(d.properties.mag));
        });

    // remove circles for old earthquakes no longer in data
    earthquakes.exit()
        .transition()
        .attr("r", 0)
        .style("fill-opacity", 0)
        .remove();
};
function drawGasfields(dataset, map) {
    // get any existing circles
    var gasfields = map.selectAll("path").data(dataset)

    var radius = d3.scale.pow()
        .range([2, 12])
        .domain([0, 5]);

    // add new circles for new earthquakes
    
    gasfields.enter()
        .append("path")
        .attr("d", path.projection(xy))

        .style("fill", "black")
        .style("fill-opacity", 0)
        .transition()
        .delay(function(d, i) {
            return i / dataset.length * 1000;
        })
        .duration(1000)
        .style("fill-opacity", .15)

    // remove circles for old earthquakes no longer in data
    gasfields.exit()
        .transition()
        .style("fill-opacity", 0)
        .remove();
};
var Legend = function(el, series) {
  this.el = d3.select(el);
  this.series = series;
};

Legend.prototype.update = function(series, animate) {
  this.series = series;
  
  var item = this.el
    .selectAll(".shart-legend-item")
      .data(series);
  
  var exit = item.exit();
  
  var enter = item.enter()
    .append("div")
      .classed("shart-legend-item", true);
  
  var swatch = enter.append("span")
    .classed("shart-swatch shart-legend-item-swatch", true)
    .style("background-color", function(d) { return d.color })
    .style("border-radius", function(d) { 
      if(d.rounded) {
        return '50%';
      }
      else {
        return '0'; 
      }
      
    });

  var label = enter.append("span")
    .classed("shart-legend-item-label", true)
    .text(function(d) { return d.label });
  
  if (animate) {
    exit
      .transition()
        .style('opacity', 0)
        .remove();
    
    enter
      .style('opacity', 0)
      .transition()
        .duration(1000)
        .style('opacity', 1);
    
  } else {
    exit
      .remove();
  }

};

Legend.prototype.draw = function() {
  this.el
    .classed("shart-legend", true);

  this.update(this.series);
};
function drawPlaces(dataset, map) {

    // get any existing circles
    var places = map.selectAll("circle").data(dataset)
    
    var radius = d3.scale.sqrt()
        .range(range(2, 10))
        .domain([1000, 800000]);

    var colourScale = d3.scale.sqrt()
        .range([0, 1])
        .domain([1000, 800000]);

    var fillOpacity = d3.scale.sqrt()
        .range([.50, .75])
        .domain([1000, 800000]);
                    
    var colourInterpolator = d3.interpolateHsl("#49BCEF", "#1E6787");
                   //colours can be specified as any CSS colour string

    places.enter()
        .append("circle")
        .attr("cx", function(d) {
            return xy(d.geometry.coordinates)[0]
        })
        .attr("cy", function(d) {
            return xy(d.geometry.coordinates)[1]
        })
        .attr("r", function(d) {
            return 0;
        })
        .on("mouseover", function(d) {   
            tooltip_earthquake = d3.select(".tooltip--earthquake").style("opacity", 0);
               
            tooltip_place.transition()
                .duration(500)  
                .style("opacity", 0);
            tooltip_place.transition()
                .duration(200)  
                .style("opacity", .9);  
            tooltip_place.html(d.properties.name)
                .style("left", (d3.event.pageX) + "px")          
                .style("top", (d3.event.pageY - 28) + "px");
            })
        .style("fill", function(d) {
            return colourInterpolator(colourScale(Math.abs(d.properties.population)));
        })
        .style("fill-opacity", 0)
        .transition()
        .delay(function(d, i) {
            return i / dataset.length * 200;
        })
        .duration(1000)
        .attr("r", function(d) {
            return radius(Math.abs(d.properties.population));
        })
        .style("fill-opacity", function(d) {
            return fillOpacity(Math.abs(d.properties.population));
        })
        .attr("data-tooltip", function(d) { 
            return d.properties.name; 
        });

    // remove circles for old earthquakes no longer in data
    places.exit()
        .transition()
        .attr("r", 0)
        .style("fill-opacity", 0)
        .remove();
}