Displaying planetary data from nasa.gov to test Parallel Coordinates in d3 with the awesome parcoords library
forked from eesur's block: d3 | Parallel Coordinates
forked from Goomble's block: d3 | Parallel Coordinates
forked from Goomble's block: d3 | Parallel Coordinates
forked from Goomble's block: d3 | Parallel Coordinates
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<title>Linking to Data Table</title>
<!-- https://syntagmatic.github.com/parallel-coordinates/ -->
<link rel="stylesheet" type="text/css" href="style.css">
<script src="//cdnjs.cloudflare.com/ajax/libs/d3/3.4.13/d3.min.js"></script>
<script src="d3.parcoords.js"></script>
<script src="divgrid.js"></script>
<div id="example" class="parcoords"></div>
<div id="grid"></div>
<script id="brushing">// quantitative colour scale
var green_to_blue = d3.scale.linear()
.domain([9, 50])
.range(["#7AC143", "#00B0DD"])
.interpolate(d3.interpolateLab);
var color = function(d) { return green_to_blue(d['tier']); };
var parcoords = d3.parcoords()("#example")
.color(color)
.alpha(0.4);
var margin = {top: 30, right: 10, bottom: 10, left: 10},
width = 960 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom;
var x = d3.scale.ordinal().rangePoints([0, width], 1),
y = {},
dragging = {};
var line = d3.svg.line(),
axis = d3.svg.axis().orient("left"),
background,
foreground;
var 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 + ")");
// load csv file and create the chart
d3.csv('mrc_table2sample4.csv', function(data) {
// parcoords
// .data(data)
// .render()
// .brushMode("1D-axes"); // enable brushing
x.domain(dimensions = d3.keys(data[0]).filter(function(d) {
return d != "tier" && (y[d] = d3.scale.linear()
.domain(d3.extent(data, function(p) { return +p[d]; }))
.range([height, 0]));
}));
background = svg.append("g")
.attr("class", "background")
.selectAll("path")
.data(data)
.enter().append("path")
.attr("d", path);
// Add blue foreground lines for focus.
foreground = svg.append("g")
.attr("class", "foreground")
.selectAll("path")
.data(data)
.enter().append("path")
.attr("d", path);
var g = svg.selectAll(".dimension")
.data(dimensions)
.enter().append("g")
.attr("class", "dimension")
.attr("transform", function(d) { return "translate(" + x(d) + ")"; })
.call(d3.behavior.drag()
.origin(function(d) { return {x: x(d)}; })
.on("dragstart", 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("dragend", function(d) {
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);
}));
g.append("g")
.attr("class", "axis")
.each(function(d) { d3.select(this).call(axis.scale(y[d])); })
.append("text")
.style("text-anchor", "middle")
.attr("y", -9)
.text(function(d) { return d; });
// create data table, row hover highlighting
var grid = d3.divgrid();
d3.select("#grid")
.datum(data.slice(0,10))
.call(grid)
.selectAll(".row")
.on({
"mouseover": function(d) { parcoords.highlight([d]) },
"mouseout": parcoords.unhighlight
});
// update data table on brush event
parcoords.on("brush", function(d) {
d3.select("#grid")
.datum(d.slice(0,10))
.call(grid)
.selectAll(".row")
.on({
"mouseover": function(d) { parcoords.highlight([d]) },
"mouseout": parcoords.unhighlight
});
});
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])]; }));
}
function brushstart() {
d3.event.sourceEvent.stopPropagation();
}
// 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>
https://cdnjs.cloudflare.com/ajax/libs/d3/3.4.13/d3.min.js