This JS+D3 gist creates a scatterplot with zooming and panning enabled as well as a brush for selecting or deselecting points using the iris dataset within data.tsv.
The "Get Selection" button gets the current selection of points and prints their ids to the JS console (i.e. console.log(selection);).
The "Clear Selection" button clears the current selection.
| sepalLength | sepalWidth | petalLength | petalWidth | species | |
|---|---|---|---|---|---|
| 5.1 | 3.5 | 1.4 | 0.2 | setosa | |
| 4.9 | 3.0 | 1.4 | 0.2 | setosa | |
| 4.7 | 3.2 | 1.3 | 0.2 | setosa | |
| 4.6 | 3.1 | 1.5 | 0.2 | setosa | |
| 5.0 | 3.6 | 1.4 | 0.2 | setosa | |
| 5.4 | 3.9 | 1.7 | 0.4 | setosa | |
| 4.6 | 3.4 | 1.4 | 0.3 | setosa | |
| 5.0 | 3.4 | 1.5 | 0.2 | setosa | |
| 4.4 | 2.9 | 1.4 | 0.2 | setosa | |
| 4.9 | 3.1 | 1.5 | 0.1 | setosa | |
| 5.4 | 3.7 | 1.5 | 0.2 | setosa | |
| 4.8 | 3.4 | 1.6 | 0.2 | setosa | |
| 4.8 | 3.0 | 1.4 | 0.1 | setosa | |
| 4.3 | 3.0 | 1.1 | 0.1 | setosa | |
| 5.8 | 4.0 | 1.2 | 0.2 | setosa | |
| 5.7 | 4.4 | 1.5 | 0.4 | setosa | |
| 5.4 | 3.9 | 1.3 | 0.4 | setosa | |
| 5.1 | 3.5 | 1.4 | 0.3 | setosa | |
| 5.7 | 3.8 | 1.7 | 0.3 | setosa | |
| 5.1 | 3.8 | 1.5 | 0.3 | setosa | |
| 5.4 | 3.4 | 1.7 | 0.2 | setosa | |
| 5.1 | 3.7 | 1.5 | 0.4 | setosa | |
| 4.6 | 3.6 | 1.0 | 0.2 | setosa | |
| 5.1 | 3.3 | 1.7 | 0.5 | setosa | |
| 4.8 | 3.4 | 1.9 | 0.2 | setosa | |
| 5.0 | 3.0 | 1.6 | 0.2 | setosa | |
| 5.0 | 3.4 | 1.6 | 0.4 | setosa | |
| 5.2 | 3.5 | 1.5 | 0.2 | setosa | |
| 5.2 | 3.4 | 1.4 | 0.2 | setosa | |
| 4.7 | 3.2 | 1.6 | 0.2 | setosa | |
| 4.8 | 3.1 | 1.6 | 0.2 | setosa | |
| 5.4 | 3.4 | 1.5 | 0.4 | setosa | |
| 5.2 | 4.1 | 1.5 | 0.1 | setosa | |
| 5.5 | 4.2 | 1.4 | 0.2 | setosa | |
| 4.9 | 3.1 | 1.5 | 0.2 | setosa | |
| 5.0 | 3.2 | 1.2 | 0.2 | setosa | |
| 5.5 | 3.5 | 1.3 | 0.2 | setosa | |
| 4.9 | 3.6 | 1.4 | 0.1 | setosa | |
| 4.4 | 3.0 | 1.3 | 0.2 | setosa | |
| 5.1 | 3.4 | 1.5 | 0.2 | setosa | |
| 5.0 | 3.5 | 1.3 | 0.3 | setosa | |
| 4.5 | 2.3 | 1.3 | 0.3 | setosa | |
| 4.4 | 3.2 | 1.3 | 0.2 | setosa | |
| 5.0 | 3.5 | 1.6 | 0.6 | setosa | |
| 5.1 | 3.8 | 1.9 | 0.4 | setosa | |
| 4.8 | 3.0 | 1.4 | 0.3 | setosa | |
| 5.1 | 3.8 | 1.6 | 0.2 | setosa | |
| 4.6 | 3.2 | 1.4 | 0.2 | setosa | |
| 5.3 | 3.7 | 1.5 | 0.2 | setosa | |
| 5.0 | 3.3 | 1.4 | 0.2 | setosa | |
| 7.0 | 3.2 | 4.7 | 1.4 | versicolor | |
| 6.4 | 3.2 | 4.5 | 1.5 | versicolor | |
| 6.9 | 3.1 | 4.9 | 1.5 | versicolor | |
| 5.5 | 2.3 | 4.0 | 1.3 | versicolor | |
| 6.5 | 2.8 | 4.6 | 1.5 | versicolor | |
| 5.7 | 2.8 | 4.5 | 1.3 | versicolor | |
| 6.3 | 3.3 | 4.7 | 1.6 | versicolor | |
| 4.9 | 2.4 | 3.3 | 1.0 | versicolor | |
| 6.6 | 2.9 | 4.6 | 1.3 | versicolor | |
| 5.2 | 2.7 | 3.9 | 1.4 | versicolor | |
| 5.0 | 2.0 | 3.5 | 1.0 | versicolor | |
| 5.9 | 3.0 | 4.2 | 1.5 | versicolor | |
| 6.0 | 2.2 | 4.0 | 1.0 | versicolor | |
| 6.1 | 2.9 | 4.7 | 1.4 | versicolor | |
| 5.6 | 2.9 | 3.6 | 1.3 | versicolor | |
| 6.7 | 3.1 | 4.4 | 1.4 | versicolor | |
| 5.6 | 3.0 | 4.5 | 1.5 | versicolor | |
| 5.8 | 2.7 | 4.1 | 1.0 | versicolor | |
| 6.2 | 2.2 | 4.5 | 1.5 | versicolor | |
| 5.6 | 2.5 | 3.9 | 1.1 | versicolor | |
| 5.9 | 3.2 | 4.8 | 1.8 | versicolor | |
| 6.1 | 2.8 | 4.0 | 1.3 | versicolor | |
| 6.3 | 2.5 | 4.9 | 1.5 | versicolor | |
| 6.1 | 2.8 | 4.7 | 1.2 | versicolor | |
| 6.4 | 2.9 | 4.3 | 1.3 | versicolor | |
| 6.6 | 3.0 | 4.4 | 1.4 | versicolor | |
| 6.8 | 2.8 | 4.8 | 1.4 | versicolor | |
| 6.7 | 3.0 | 5.0 | 1.7 | versicolor | |
| 6.0 | 2.9 | 4.5 | 1.5 | versicolor | |
| 5.7 | 2.6 | 3.5 | 1.0 | versicolor | |
| 5.5 | 2.4 | 3.8 | 1.1 | versicolor | |
| 5.5 | 2.4 | 3.7 | 1.0 | versicolor | |
| 5.8 | 2.7 | 3.9 | 1.2 | versicolor | |
| 6.0 | 2.7 | 5.1 | 1.6 | versicolor | |
| 5.4 | 3.0 | 4.5 | 1.5 | versicolor | |
| 6.0 | 3.4 | 4.5 | 1.6 | versicolor | |
| 6.7 | 3.1 | 4.7 | 1.5 | versicolor | |
| 6.3 | 2.3 | 4.4 | 1.3 | versicolor | |
| 5.6 | 3.0 | 4.1 | 1.3 | versicolor | |
| 5.5 | 2.5 | 4.0 | 1.3 | versicolor | |
| 5.5 | 2.6 | 4.4 | 1.2 | versicolor | |
| 6.1 | 3.0 | 4.6 | 1.4 | versicolor | |
| 5.8 | 2.6 | 4.0 | 1.2 | versicolor | |
| 5.0 | 2.3 | 3.3 | 1.0 | versicolor | |
| 5.6 | 2.7 | 4.2 | 1.3 | versicolor | |
| 5.7 | 3.0 | 4.2 | 1.2 | versicolor | |
| 5.7 | 2.9 | 4.2 | 1.3 | versicolor | |
| 6.2 | 2.9 | 4.3 | 1.3 | versicolor | |
| 5.1 | 2.5 | 3.0 | 1.1 | versicolor | |
| 5.7 | 2.8 | 4.1 | 1.3 | versicolor | |
| 6.3 | 3.3 | 6.0 | 2.5 | virginica | |
| 5.8 | 2.7 | 5.1 | 1.9 | virginica | |
| 7.1 | 3.0 | 5.9 | 2.1 | virginica | |
| 6.3 | 2.9 | 5.6 | 1.8 | virginica | |
| 6.5 | 3.0 | 5.8 | 2.2 | virginica | |
| 7.6 | 3.0 | 6.6 | 2.1 | virginica | |
| 4.9 | 2.5 | 4.5 | 1.7 | virginica | |
| 7.3 | 2.9 | 6.3 | 1.8 | virginica | |
| 6.7 | 2.5 | 5.8 | 1.8 | virginica | |
| 7.2 | 3.6 | 6.1 | 2.5 | virginica | |
| 6.5 | 3.2 | 5.1 | 2.0 | virginica | |
| 6.4 | 2.7 | 5.3 | 1.9 | virginica | |
| 6.8 | 3.0 | 5.5 | 2.1 | virginica | |
| 5.7 | 2.5 | 5.0 | 2.0 | virginica | |
| 5.8 | 2.8 | 5.1 | 2.4 | virginica | |
| 6.4 | 3.2 | 5.3 | 2.3 | virginica | |
| 6.5 | 3.0 | 5.5 | 1.8 | virginica | |
| 7.7 | 3.8 | 6.7 | 2.2 | virginica | |
| 7.7 | 2.6 | 6.9 | 2.3 | virginica | |
| 6.0 | 2.2 | 5.0 | 1.5 | virginica | |
| 6.9 | 3.2 | 5.7 | 2.3 | virginica | |
| 5.6 | 2.8 | 4.9 | 2.0 | virginica | |
| 7.7 | 2.8 | 6.7 | 2.0 | virginica | |
| 6.3 | 2.7 | 4.9 | 1.8 | virginica | |
| 6.7 | 3.3 | 5.7 | 2.1 | virginica | |
| 7.2 | 3.2 | 6.0 | 1.8 | virginica | |
| 6.2 | 2.8 | 4.8 | 1.8 | virginica | |
| 6.1 | 3.0 | 4.9 | 1.8 | virginica | |
| 6.4 | 2.8 | 5.6 | 2.1 | virginica | |
| 7.2 | 3.0 | 5.8 | 1.6 | virginica | |
| 7.4 | 2.8 | 6.1 | 1.9 | virginica | |
| 7.9 | 3.8 | 6.4 | 2.0 | virginica | |
| 6.4 | 2.8 | 5.6 | 2.2 | virginica | |
| 6.3 | 2.8 | 5.1 | 1.5 | virginica | |
| 6.1 | 2.6 | 5.6 | 1.4 | virginica | |
| 7.7 | 3.0 | 6.1 | 2.3 | virginica | |
| 6.3 | 3.4 | 5.6 | 2.4 | virginica | |
| 6.4 | 3.1 | 5.5 | 1.8 | virginica | |
| 6.0 | 3.0 | 4.8 | 1.8 | virginica | |
| 6.9 | 3.1 | 5.4 | 2.1 | virginica | |
| 6.7 | 3.1 | 5.6 | 2.4 | virginica | |
| 6.9 | 3.1 | 5.1 | 2.3 | virginica | |
| 5.8 | 2.7 | 5.1 | 1.9 | virginica | |
| 6.8 | 3.2 | 5.9 | 2.3 | virginica | |
| 6.7 | 3.3 | 5.7 | 2.5 | virginica | |
| 6.7 | 3.0 | 5.2 | 2.3 | virginica | |
| 6.3 | 2.5 | 5.0 | 1.9 | virginica | |
| 6.5 | 3.0 | 5.2 | 2.0 | virginica | |
| 6.2 | 3.4 | 5.4 | 2.3 | virginica | |
| 5.9 | 3.0 | 5.1 | 1.8 | virginica |
| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| .overlay { | |
| fill: none; | |
| pointer-events: all; | |
| } | |
| .axis path, | |
| .axis line { | |
| fill: none; | |
| stroke: #000; | |
| shape-rendering: crispEdges; | |
| } | |
| .dot { | |
| stroke: none; | |
| } | |
| .dot.selected { | |
| stroke: #000000; | |
| stroke-width: 2px; | |
| } | |
| a { | |
| color: #5BBEAA; | |
| } | |
| .extent { | |
| fill: #000; | |
| fill-opacity: .125; | |
| stroke: #fff; | |
| } | |
| </style> | |
| <body> | |
| <a class="btn" href="javascript:void(0);" onclick="get_selection();">Get Selection</a> | |
| <a class="btn" href="javascript:void(0);" onclick="clear_selection();">Clear Selection</a> | |
| <!-- // <script src="d3.v3.min.js"></script> --> | |
| <script src="https://d3js.org/d3.v3.min.js" charset="utf-8"></script> | |
| <script> | |
| var margin = {top: 20, right: 20, bottom: 30, left: 40}, | |
| width = 800 - margin.left - margin.right, | |
| height = 400 - margin.top - margin.bottom; | |
| var x = d3.scale.linear() | |
| .range([0, width]); | |
| var y = d3.scale.linear() | |
| .range([height, 0]); | |
| var color = d3.scale.category10(); | |
| var xAxis = d3.svg.axis() | |
| .scale(x) | |
| .orient("bottom"); | |
| var yAxis = d3.svg.axis() | |
| .scale(y) | |
| .orient("left"); | |
| var svg = d3.select("body") | |
| .append("svg") | |
| .attr("width", width + margin.left + margin.right) | |
| .attr("height", height + margin.top + margin.bottom); | |
| var shiftKey; | |
| var rect, | |
| node; | |
| svg = svg.append("g") | |
| .attr("transform", "translate(" + margin.left + "," + margin.top + ")"); | |
| var selection = []; | |
| function get_selection(){ | |
| selection = []; | |
| node.each(function(d) { | |
| if (d.selected) { | |
| selection.push(d); | |
| } | |
| }); | |
| console.log(selection); | |
| } | |
| function clear_selection() { | |
| node.classed('selected', function (d) { return d.selected = false; }) | |
| } | |
| d3.tsv("data.tsv", function(error, data) { | |
| data.forEach(function(d) { | |
| d.sepalLength = +d.sepalLength; | |
| d.sepalWidth = +d.sepalWidth; | |
| if (d.sepalWidth == 3) { | |
| d.selected = true; | |
| } | |
| }); | |
| x.domain(d3.extent(data, function(d) { return d.sepalWidth; })).nice(); | |
| y.domain(d3.extent(data, function(d) { return d.sepalLength; })).nice(); | |
| svg = svg.call(d3.behavior.zoom().x(x).y(y).on("zoom", zoom)); | |
| svg.append("g") | |
| .attr("class", "x axis") | |
| .attr("transform", "translate(0," + height + ")") | |
| .call(xAxis) | |
| .append("text") | |
| .attr("class", "label") | |
| .attr("x", width) | |
| .attr("y", -6) | |
| .style("text-anchor", "end") | |
| .text("Sepal Width (cm)"); | |
| svg.append("g") | |
| .attr("class", "y axis") | |
| .call(yAxis) | |
| .append("text") | |
| .attr("class", "label") | |
| .attr("transform", "rotate(-90)") | |
| .attr("y", 6) | |
| .attr("dy", ".71em") | |
| .style("text-anchor", "end") | |
| .text("Sepal Length (cm)") | |
| var brush = svg.append("g") | |
| .datum(function() { return {selected: false, previouslySelected: false}; }) | |
| .attr("class", "brush") | |
| .call(d3.svg.brush() | |
| .x(d3.scale.identity().domain([0, width])) | |
| .y(d3.scale.identity().domain([0, height])) | |
| .on("brushstart", function(d) { | |
| console.log('brushstart'); | |
| node.each(function(d) { d.previouslySelected = shiftKey && d.selected; }); | |
| if (!shiftKey) { | |
| d3.event.target.clear(); | |
| d3.select(this).call(d3.event.target); | |
| } | |
| }) | |
| .on("brush", function() { | |
| if (shiftKey) { | |
| console.log('shiftKey', shiftKey); | |
| var extent = d3.event.target.extent(); | |
| node.classed("selected", function(d) { | |
| return d.selected = d.previouslySelected ^ | |
| (extent[0][0] <= x(d.sepalWidth) && x(d.sepalWidth) < extent[1][0] | |
| && extent[0][1] <= y(d.sepalLength) && y(d.sepalLength) < extent[1][1]); | |
| }); | |
| } else { | |
| d3.event.target.clear(); | |
| d3.select(this).call(d3.event.target); | |
| } | |
| }) | |
| .on("brushend", function() { | |
| d3.event.target.clear(); | |
| d3.select(this).call(d3.event.target); | |
| })); | |
| function zoom() { | |
| if (shiftKey) { | |
| console.log('zoom shiftKey'); | |
| return; | |
| console.log('zoom wtf'); | |
| } | |
| console.log('zoom'); | |
| node.attr("cx", function(d) { return x(d.sepalWidth); }) | |
| .attr("cy", function(d) { return y(d.sepalLength); }); | |
| d3.select('.x.axis').call(xAxis); | |
| d3.select('.y.axis').call(yAxis); | |
| } | |
| rect = svg.append('rect') | |
| .attr('pointer-events', 'all') | |
| .attr('width', width) | |
| .attr('height', height) | |
| .style('fill', 'none'); | |
| node = svg.selectAll(".dot") | |
| .data(data) | |
| .enter().append("circle") | |
| .attr("class", "dot") | |
| .attr("r", function(d) { return d.selected ? 5 : 6; }) | |
| .attr("cx", function(d) { return x(d.sepalWidth); }) | |
| .attr("cy", function(d) { return y(d.sepalLength); }) | |
| .style("fill", function(d) { return color(d.species); }) | |
| .on("mousedown", function(d) { | |
| if (shiftKey) { | |
| d3.select(this).classed("selected", d.selected = !d.selected); | |
| } else { | |
| node.classed("selected", function(p) { | |
| return p.selected = d === p; | |
| }); | |
| } | |
| }); | |
| node.classed('selected', function (d) {return d.selected;}) | |
| var legend = svg.selectAll(".legend") | |
| .data(color.domain()) | |
| .enter().append("g") | |
| .attr("class", "legend") | |
| .attr("transform", function(d, i) { return "translate(0," + i * 20 + ")"; }); | |
| legend.append("rect") | |
| .attr("x", width - 18) | |
| .attr("width", 18) | |
| .attr("height", 18) | |
| .style("fill", color); | |
| legend.append("text") | |
| .attr("x", width - 24) | |
| .attr("y", 9) | |
| .attr("dy", ".35em") | |
| .style("text-anchor", "end") | |
| .text(function(d) { return d; }); | |
| d3.select(window).on("keydown", function() { | |
| shiftKey = d3.event.shiftKey; | |
| if (shiftKey) { | |
| rect = rect.attr('pointer-events', 'none'); | |
| } else { | |
| rect = rect.attr('pointer-events', 'all'); | |
| } | |
| }); | |
| d3.select(window).on("keyup", function() { | |
| shiftKey = d3.event.shiftKey; | |
| if (shiftKey) { | |
| rect = rect.attr('pointer-events', 'none'); | |
| } else { | |
| rect = rect.attr('pointer-events', 'all'); | |
| } | |
| }); | |
| }); | |
| </script> |