xxxxxxxxxx
<meta charset="utf-8">
<style>
svg {
font: 10px sans-serif;
}
.background path {
fill: none;
stroke: #ddd;
shape-rendering: crispEdges;
}
.foreground path {
fill: none;
stroke: steelblue;
}
.brush .extent {
fill-opacity: .3;
stroke: #fff;
shape-rendering: crispEdges;
}
.axis line,
.axis path {
fill: none;
stroke: #000;
shape-rendering: crispEdges;
}
.axis text {
text-shadow: 0 1px 0 #fff, 1px 0 0 #fff, 0 -1px 0 #fff, -1px 0 0 #fff;
}
</style>
<body>
<script src="https://d3js.org/d3.v4.min.js"></script>
<script>
let margin = {top: 30, right: 10, bottom: 10, left: 10},
width = 960 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom;
let x = d3.scalePoint().range([0, width]).padding(1),
y = {},
dragging = {};
let line = d3.line(),
axis = d3.axisLeft(), //Argument for axisLeft? Compare to code on original plot
background,
foreground;
let svg = d3.select("body").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 + ")");
d3.csv("billionaires.csv", function (error, data) {
var fdata = data.map(function(d) {
return {
age: d.age,
year: d.year,
'worth in billions': d["worth in billions"],
gdp: d.gdp,
rank: d.rank,
founded: d.founded,
}
});
// Extract the list of dimensions and create a scale for each.
x.domain(dimensions = d3.keys(fdata[0]).filter(function (d) {
return d !== "name" && (y[d] = d3.scaleLinear()
.domain(d3.extent(fdata, function (p) {
return +p[d];
}))
.range([height, 0]));
}));
// Add grey background lines for context.
background = svg.append("g")
.attr("class", "background")
.selectAll("path")
.data(fdata)
.enter().append("path")
.attr("d", path);
// Add blue foreground lines for focus.
foreground = svg.append("g")
.attr("class", "foreground")
.selectAll("path")
.data(fdata)
.enter().append("path")
.attr("d", path);
// Add a group element for each dimension.
let g = svg.selectAll(".dimension")
.data(dimensions)
.enter().append("g")
.attr("class", "dimension")
.attr("transform", function (d) {
return "translate(" + x(d) + ")";
})
.call(d3.drag()
.subject(function (d) {
return {x: x(d)};
})
.on("start", function (d) {
dragging[d] = x(d);
background.attr("visibility", "hidden");
})
.on("drag", function (d) {
dragging[d] = Math.min(width, Math.max(0, d3.event.x));
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("end", function (d) {
delete dragging[d];
transition(d3.select(this)).attr("transform", "translate(" + x(d) + ")");
transition(foreground).attr("d", path);
background
.attr("d", path)
.attr("visibility", null);
}));
// Add an axis and title.
g.append("g")
.attr("class", "axis")
.each(function (d) {
d3.select(this).call(axis.scale(y[d]));
})
.append("text")
.style("text-anchor", "middle")
.style('fill', 'Black')
.attr("y", -9)
.text(function (d) {
return d;
});
});
function position(d) {
let v = dragging[d];
return v == null ? x(d) : v;
}
// Returns the path for a given data point.
function path(d) {
return line(dimensions.map(function (p) {
return [position(p),y[p](d[p])];
}));
}
</script>
<p><a href="https://stackoverflow.com/questions/46591962/d3-v4-parallel-coordinate-plot-brush-selection?rq=1">Reference</a>
</p>
</body>
https://d3js.org/d3.v4.min.js