我有一些要使用平行坐标可视化的数据。
我的数据由200行(案例)和100列(功能)组成。我只需要可视化数据的某些部分(200x8)，包括feature1，feature2，...，feature8。我也有4列数据(A，B，C和D)，它们的值是0或1。例如，如果一个案例(行)的A列的值为1，则意味着数据的案例是类型一种。
我已经有绘制平行坐标的代码:
<div class="filter_options">
<input class="filter_button" id="a_button" type="checkbox">A</input><br>
<input class="filter_button" id="b_button" type="checkbox">B</input><br>
<input class="filter_button" id="c_button" type="checkbox">C</input><br>
<input class="filter_button" id="d_button" type="checkbox">D</input><br>
</div>
<body>
<script type="text/javascript">
var m = [30, 10, 10, 10],
w = 1300 - m[1] - m[3],
h = 500 - m[0] - m[2];
var x = d3.scale.ordinal().rangePoints([0, w], 1),
y = {},
dragging = {};
var line = d3.svg.line(),
axis = d3.svg.axis().orient("left"),
background,
foreground;
var svg = d3.select("body").append("svg:svg")
.attr("width", w + m[1] + m[3])
.attr("height", h + m[0] + m[2])
.append("svg:g")
.attr("transform", "translate(" + m[3] + "," + m[0] + ")");
d3.csv("myData.csv")
.row(function(d) {
return {
// Features that are needed to be visualize
feature1 : d.feature1,
feature2 : d.feature2,
feature3 : d.feature3,
feature4 : d.feature4,
feature5 : d.feature5,
feature6 : d.feature6,
feature7 : d.feature7,
feature8 : d.feature8,
A : d.A,
B : d.B,
C : d.C,
D : d.D
};
})
.get(function(e, data) {
x.domain(
dimensions = d3.keys(data[0])
.filter(function(d) {
return d != "source" &&
(y[d] = d3.scale.linear()
.domain(d3.extent(data, function(p) { return +p[d]; }))
.range([h, 0]));
}
));
// Add grey background lines for context.
background = svg.append("svg:g")
.attr("class", "background")
.selectAll("path")
.data(data)
.enter().append("svg:path")
.attr("d", path);
// Add blue foreground lines for focus.
foreground = svg.append("svg:g")
.attr("class", "foreground")
.selectAll("path")
.data(data)
.enter().append("svg:path")
.attr("d", path);
// Add a group element for each dimension.
var g = svg.selectAll(".dimension")
.data(dimensions)
.enter().append("svg:g")
.attr("class", "dimension")
.attr("transform", function(d) { return "translate(" + x(d) + ")"; })
.call(d3.behavior.drag()
.on("dragstart", function(d) {
dragging[d] = this.__origin__ = x(d);
background.attr("visibility", "hidden");
})
.on("drag", function(d) {
dragging[d] = Math.min(w, Math.max(0, this.__origin__ += d3.event.dx));
foreground.attr("d", path);
dimensions.sort(function(a, b) { return position(a) - position(b); });
x.domain(dimensions);
g.attr("transform", function(d) { return "translate(" + position(d) + ")"; })
})
.on("dragend", function(d) {
delete this.__origin__;
delete dragging[d];
transition(d3.select(this)).attr("transform", "translate(" + x(d) + ")");
transition(foreground)
.attr("d", path);
background
.attr("d", path)
.transition()
.delay(500)
.duration(0)
.attr("visibility", null);
}));
// Add an axis and title.
g.append("svg:g")
.attr("class", "axis")
.each(function(d) { d3.select(this).call(axis.scale(y[d])); })
.append("svg:text")
.attr("text-anchor", "middle")
.attr("y", -9)
.text(String);
// Add and store a brush for each axis.
g.append("svg:g")
.attr("class", "brush")
.each(function(d) { d3.select(this).call(y[d].brush = d3.svg.brush().y(y[d]).on("brush", brush)); })
.selectAll("rect")
.attr("x", -8)
.attr("width", 16);
});
function position(d) {
var v = dragging[d];
return v == null ? x(d) : v;
}
function transition(g) {
return g.transition().duration(500);
}
// Returns the path for a given data point.
function path(d) {
return line(dimensions.map(function(p) { return [position(p), y[p](d[p])]; }));
}
// Handles a brush event, toggling the display of foreground lines.
function brush() {
var actives = dimensions.filter(function(p) { return !y[p].brush.empty(); }),
extents = actives.map(function(p) { return y[p].brush.extent(); });
foreground.style("display", function(d) {
return actives.every(function(p, i) {
return extents[i][0] <= d[p] && d[p] <= extents[i][1];
}) ? null : "none";
});
}
</script>
</body>
现在，我要添加4复选框，用户可以选择要在平行坐标中查看的类型。例如，如果用户检查A型，则应可视化其A列中值为1的案例(行)。
我该怎么办？
我非常感谢您可以提供的任何帮助:)
这块(5x31)数据类似于我的数据:
path,Ktype,label,CGX,CGY,C_1,C_2,C_3,C_4,total1,total2,totalI3,total4,feature1,feature2,feature3,feature4,feature5,feature6,feature7,feature8,feature9,feature10,feature11,feature12,A,B,C,D,feature13,feature14,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
.\Mydata\Case1,k1,1,42,33,0,57.44534,0,52597,71,16,10,276,4038,3789.631,0.6173469,0.6499337,2.103316,0.6661285,1.065539,248.3694,0.630161,0.000192848,0.9999996,0.000642777,1,0,0,1,9.60E-05,3136.698,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
.\Mydata\Case2,k1,2,163,29,0,43.28862,0,49050,71,16,10,248,2944,2587.956,0.5726808,0.5681185,2.130387,0.601512,1.137578,356.0444,0.6335613,0.000327267,1.000029,0.001271235,1,0,0,1,0.00010854,2676.418,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
.\Mydata\Case3,k1,3,774,19,0,45.26291,0,53455,71,16,10,212,2366,1982.547,0.408179,0.4579566,1.994296,0.6615351,1.193415,383.4534,0.7153812,0.000264522,1.000031,0.001210507,1,1,0,0,9.54E-05,3221.289,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
.\Mydata\Case4,k1,4,1116,25,0,80.76469,0,57542,71,16,10,284,3908,3453.988,0.3549117,0.4811547,1.982244,0.6088744,1.131446,454.0122,0.6166388,0.000314288,0.9999836,0.00129846,0,1,1,0,0.000140592,2143.42,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
.\Mydata\Case5,k1,5,1364,59,1,52.96776,0,49670,71,16,10,228,2725,2642.675,0.4328255,0.475517,1.859871,0.6587288,1.031152,82.32471,0.5775694,0.000466264,0.9999803,0.001765345,0,1,1,0,0.00012014,2439.636,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
最佳答案
在不了解您的数据和代码组织的情况下，很难为您提供建议或解决方案，因此，我将尝试使用别人的相似且很好的示例。 最终，您问题的解决方案可能看起来完全不同，但是我将此答案作为对您的指导原则，希望对您有所帮助。
看看这个fine example of usage of parallel coordinates:(它具有选择和取消选择项目组的功能-您需要的确切功能)
此示例的JavaScript代码是here。
数据在一个csv文件中，前几行如下:
"name","group","protein (g)","calcium (g)","sodium (g)","fiber (g)","vitaminc (g)","potassium (g)","carbohydrate (g)","sugars (g)","fat (g)","water (g)","calories","saturated (g)","monounsat (g)","polyunsat (g)","id"
"Beverage, instant breakfast powder, chocolate, not reconstituted","Dairy and Egg Products",19.9,0.285,0.385,0.4,0.07690000000000001,0.947,66.2,65.8,1.4,7.4,357,0.56,0.314,0.278,27481
"Beverage, instant breakfast powder, chocolate, sugar-free, not reconstituted","Dairy and Egg Products",35.8,0.5,0.717,2,0.138,1.705,41,39,5.1,7.4,358,2.162,1.189,1.027,27482
"Beverage, milkshake mix, dry, not chocolate","Dairy and Egg Products",23.5,0.88,0.78,1.6,0.0012,2.2,52.9,51.3,2.6,12.8,329,2.059,0.332,0.06,27483
"Butter oil, anhydrous","Dairy and Egg Products",0.28,0.004,0.002,,0,0.005,,,99.48,0.24,876,61.924,28.732,3.694,27484
"Butter, salted","Dairy and Egg Products",0.85,0.024,0.714,,0,0.024,0.06,0.06,81.11,15.87,717,51.368,21.021,3.043,27485
"Butter, whipped, with salt","Dairy and Egg Products",0.85,0.024,0.827,,0,0.026,0.06,0.06,81.11,15.87,717,50.489,23.426,3.012,27486
"Butter, without salt","Dairy and Egg Products",0.85,0.024,0.011,,0,0.024,0.06,0.06,81.11,17.94,717,51.368,21.021,3.043,27487
"Cheese fondue","Dairy and Egg Products",14.23,0.476,0.132,,0,0.105,3.77,,13.47,61.61,229,8.721,3.563,0.484,27488
"Cheese food, cold pack, american","Dairy and Egg Products",19.66,0.497,0.966,,0,0.363,8.32,,24.46,43.12,331,15.355,7.165,0.719,27489
"Cheese food, imitation","Dairy and Egg Products",22.4,0.552,1.239,,0,0.336,8.8,8.21,1.3,63.8,137,0.81,0.38,0.048,27490
第二列是“组”，该字段用于项目分类。在此示例中，还为每个组使用了颜色的定义:
var colors = {
"Baby Foods": [185,56,73],
"Baked Products": [37,50,75],
"Beef Products": [325,50,39],
"Beverages": [10,28,67],
"Breakfast Cereals": [271,39,57],
"Cereal Grains and Pasta": [56,58,73],
"Dairy and Egg Products": [28,100,52],
"Ethnic Foods": [41,75,61],
"Fast Foods": [60,86,61],
"Fats and Oils": [30,100,73],
"Finfish and Shellfish Products": [318,65,67],
"Fruits and Fruit Juices": [274,30,76],
"Lamb, Veal, and Game Products": [20,49,49],
"Legumes and Legume Products": [334,80,84],
"Meals, Entrees, and Sidedishes": [185,80,45],
"Nut and Seed Products": [10,30,42],
"Pork Products": [339,60,49],
"Poultry Products": [359,69,49],
"Restaurant Foods": [204,70,41],
"Sausages and Luncheon Meats": [1,100,79],
"Snacks": [189,57,75],
"Soups, Sauces, and Gravies": [110,57,70],
"Spices and Herbs": [214,55,79],
"Sweets": [339,60,75],
"Vegetables and Vegetable Products": [120,56,40]
};
在图表中间创建列表“食物组”的函数是create_legend():
function create_legend(colors,brush) {
// create legend
var legend_data = d3.select("#legend")
.html("")
.selectAll(".row")
.data( _.keys(colors).sort() )
// filter by group
var legend = legend_data
.enter().append("div")
.attr("title", "Hide group")
.on("click", function(d) {
// toggle food group
if (_.contains(excluded_groups, d)) {
d3.select(this).attr("title", "Hide group")
excluded_groups = _.difference(excluded_groups,[d]);
brush();
} else {
d3.select(this).attr("title", "Show group")
excluded_groups.push(d);
brush();
}
});
legend
.append("span")
.style("background", function(d,i) { return color(d,0.85)})
.attr("class", "color-bar");
legend
.append("span")
.attr("class", "tally")
.text(function(d,i) { return 0});
legend
.append("span")
.text(function(d,i) { return " " + d});
return legend;
}
如您所见，该列表被实现为一系列div，这些div具有工具提示“显示组”或“隐藏组”，具体取决于相关组是否在列表“excluded_groups”中。同样，“onclick”事件从“excluded_groups”列表中删除有问题的组或将其添加到列表中。在重绘平行坐标的代码中，列表“excluded_groups”用于过滤。您可以在代码中执行类似的操作。就这些。
本示例出于各种目的使用underscore.js，如果您不希望这样做，则可能需要重写和调整一些代码部分。
关于javascript - 带复选框的平行坐标，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/24710672/