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@dmesquita
Last active February 23, 2018 14:22
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Reusable bubble chart
function bubbleChart() {
var width = 960,
height = 960,
maxRadius = 6,
columnForColors = "category",
columnForRadius = "views";
function chart(selection) {
var data = selection.datum();
var div = selection,
svg = div.selectAll('svg');
svg.attr('width', width).attr('height', height);
var tooltip = selection
.append("div")
.style("position", "absolute")
.style("visibility", "hidden")
.style("color", "white")
.style("padding", "8px")
.style("background-color", "#626D71")
.style("border-radius", "6px")
.style("text-align", "center")
.style("font-family", "monospace")
.style("width", "400px")
.text("");
var simulation = d3.forceSimulation(data)
.force("charge", d3.forceManyBody().strength([-50]))
.force("x", d3.forceX())
.force("y", d3.forceY())
.on("tick", ticked);
function ticked(e) {
node.attr("cx", function(d) {
return d.x;
})
.attr("cy", function(d) {
return d.y;
});
}
var colorCircles = d3.scaleOrdinal(d3.schemeCategory10);
var scaleRadius = d3.scaleLinear().domain([d3.min(data, function(d) {
return +d[columnForRadius];
}), d3.max(data, function(d) {
return +d[columnForRadius];
})]).range([5, 18])
var node = svg.selectAll("circle")
.data(data)
.enter()
.append("circle")
.attr('r', function(d) {
return scaleRadius(d[columnForRadius])
})
.style("fill", function(d) {
return colorCircles(d[columnForColors])
})
.attr('transform', 'translate(' + [width / 2, height / 2] + ')')
.on("mouseover", function(d) {
tooltip.html(d[columnForColors] + "<br>" + d.title + "<br>" + d[columnForRadius] + " hearts");
return tooltip.style("visibility", "visible");
})
.on("mousemove", function() {
return tooltip.style("top", (d3.event.pageY - 10) + "px").style("left", (d3.event.pageX + 10) + "px");
})
.on("mouseout", function() {
return tooltip.style("visibility", "hidden");
});
}
chart.width = function(value) {
if (!arguments.length) {
return width;
}
width = value;
return chart;
};
chart.height = function(value) {
if (!arguments.length) {
return height;
}
height = value;
return chart;
};
chart.columnForColors = function(value) {
if (!arguments.columnForColors) {
return columnForColors;
}
columnForColors = value;
return chart;
};
chart.columnForRadius = function(value) {
if (!arguments.columnForRadius) {
return columnForRadius;
}
columnForRadius = value;
return chart;
};
return chart;
}
<!DOCTYPE html>
<div class="chart-example" id="chart"><svg></svg></div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/4.6.0/d3.min.js"></script>
<script src="bubble_chart.js"></script>
<script>
d3.csv('medium_january.csv', function(error, data) {
if (error) {
console.error('Error getting or parsing the data.');
throw error;
}
// selection.datum() returns the bound datum for the first element in the selection and
// doesn't join the specified array of data with the selected elements
var chart = bubbleChart().width(600).height(400);
d3.select('#chart').datum(data).call(chart);
});
</script>
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