D3.js焦點+上下文溢出

大家好，我正嘗試重新調整在此處找到的焦點+上下文圖表：來代替使用條形圖。我已經能夠進入酒吧，但我有一些重疊問題。當您在上下文區域進行選擇時，焦點區域有時會顯示干擾比例尺顯示的條。這是我的代碼，我知道我需要清理一些部分，所以不要專注於此。有人可以在這裏指出我正確的方向嗎？D3.js焦點+上下文溢出

<!DOCTYPE html> 
    <meta charset="utf-8"> 
    <style> 

    svg { 
     font: 10px sans-serif; 
    } 

path { 
    fill: steelblue; 
} 

.axis path, 
.axis line { 
    fill: none; 
    stroke: #000; 
    shape-rendering: crispEdges; 
} 

.brush .extent { 
    stroke: #fff; 
    fill-opacity: .125; 
    shape-rendering: crispEdges; 
} 

</style> 
<body> 
<script src="http://d3js.org/d3.v3.min.js"></script> 
<script> 

var focusGraph; 
var dataTest = d3.csv("sp500.csv"); 

var margin = {top: 10, right: 10, bottom: 100, left: 40}, 
    margin2 = {top: 430, right: 10, bottom: 20, left: 40}, 
    width = 960 - margin.left - margin.right, 
    height = 500 - margin.top - margin.bottom, 
    height2 = 500 - margin2.top - margin2.bottom; 

var parseDate = d3.time.format("%b %Y").parse; 

var x = d3.time.scale().range([0, width]), 
    x2 = d3.time.scale().range([0, width]), 
    y = d3.scale.linear().range([0,height]), 
    y2 = d3.scale.linear().range([0,height2]); 

var xAxis = d3.svg.axis().scale(x).orient("bottom"), 
    xAxis2 = d3.svg.axis().scale(x2).orient("bottom"), 
    yAxis = d3.svg.axis().scale(y).orient("left"); 

var brush = d3.svg.brush() 
    .x(x2) 
    .on("brush", brushed); 

var area = d3.svg.area() 
    .interpolate("monotone") 
    .x(function(d) { return x(d.date); }) 
    .y0(height) 
    .y1(function(d) { return y(d.price); }); 

/*var area2 = d3.svg.area() 
    .interpolate("monotone") 
    .x(function(d) { return x2(d.date); }) 
    .y0(height2) 
    .y1(function(d) { return y2(d.price); });*/ 

var svg = d3.select("body").append("svg") 
    .attr("width", width + margin.left + margin.right) 
    .attr("height", height + margin.top + margin.bottom); 

svg.append("defs").append("clipPath") 
    .attr("id", "clip") 
    .append("rect") 
    .attr("width", width) 
    .attr("height", height); 

var focus = svg.append("g") 
    .attr("transform", "translate(" + margin.left + "," + margin.top + ")"); 

var context = svg.append("g") 
    .attr("transform", "translate(" + margin2.left + "," + margin2.top + ")"); 

d3.csv("sp500.csv", function(error, data) { 

    data.forEach(function(d) { 
    d.date = parseDate(d.date); 
    d.price = +d.price; 
    }); 

    x.domain(d3.extent(data.map(function(d) { return d.date; }))); 
    y.domain([0, d3.max(data.map(function(d) { return d.price; }))]); 
    x2.domain(x.domain()); 
    y2.domain(y.domain()); 

    focus.append("g") 
     .attr("class", "x axis") 
     .attr("transform", "translate(0," + height + ")") 
     .call(xAxis); 

    focus.append("g") 
     .attr("class", "y axis") 
     .call(yAxis); 

    focusGraph = focus.selectAll("rect") 
     .data(data) 
    .enter().append("rect") 
     .attr("x", function(d, i) { return x(d.date); }) 
     .attr("y", function(d) { return height - y(d.price); }) 
     .attr("width", 5) 
     .attr("height", function(d) { return y(d.price); }); 

    context.selectAll("rect") 
     .data(data) 
    .enter().append("rect") 
     .attr("x", function(d, i) { return x2(d.date); }) 
     .attr("y", function(d) { return height2 - y2(d.price); }) 
     .attr("width", 5) 
     .attr("height", function(d) { return y2(d.price); }); 

    context.append("g") 
     .attr("class", "x axis") 
     .attr("transform", "translate(0," + height2 + ")") 
     .call(xAxis2); 

    context.append("g") 
     .attr("class", "x brush") 
     .call(brush) 
    .selectAll("rect") 
     .attr("y", -6) 
     .attr("height", height2 + 7); 
}); 

function brushed() { 

    var data = d3.csv("sp500.csv"); 

    x.domain(brush.empty() ? x2.domain() : brush.extent()); 
    focusGraph.attr("x", function(d, i) { return x(d.date); }); 
    focusGraph.attr("width", 20); 

    focus.select(".x.axis").call(xAxis); 

} 

</script>

來源

2013-07-30 Chris Maness

作爲一個建議，你可以通過'。 attr（）'鍵/值對的對象，而不是爲每個屬性多次調用它。 –

這是因爲你只是忘了將剪輯路徑設置爲圖表。因此，考慮以下思路：

var focus = svg.append("g") 
    .attr("transform", "translate(" + margin.left + "," + margin.top + ")"); 

// here we insert the new group that will be the container for the bars 
var barsGroup = focus.append("g") 
    .attr('clip-path', 'url(#clip)');

然後你定義的實際圖表作爲這個新組中：

focusGraph = barsGroup.selectAll("rect") 
    .data(data) 
.enter().append("rect")

觀看演示：http://jsfiddle.net/JGytk/

來源

2013-08-01 18:26:49 amakhrov

D3.js焦點+上下文溢出

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