Scatter Plot Matrix

Built with blockbuilder.org

<!DOCTYPE html>
<meta charset="utf-8">
<style>

svg {
        font: 10px sans-serif;
        padding: 10px;
    }

.axis,
    .frame {
        shape-rendering: crispEdges;
    }

.axis line {
        stroke: #ddd;
    }

.axis path {
        display: none;
    }

.cell text {
        font-weight: bold;
        text-transform: capitalize;
    }

.frame {
        fill: none;
        stroke: #aaa;
    }

circle {
        fill-opacity: .7;
    }

circle.hidden {
        fill: #ccc !important;
    }

.extent {
        fill: #000;
        fill-opacity: .125;
        stroke: #fff;
    }

</style>
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.3/underscore-min.js"></script>
<script>
    //https://bl.ocks.org/wrobstory/7612013

d3.helper = {};

d3.helper.tooltip = function(){
        var tooltipDiv;
        var bodyNode = d3.select('body').node();

function tooltip(selection){

selection.on('mouseover.tooltip', function(pD, pI){
                // Clean up lost tooltips
                d3.select('body').selectAll('div.tooltip').remove();
                // Append tooltip
                tooltipDiv = d3.select('body')
                    .append('div')
                    .attr('class', 'tooltip');
                console.log(tooltipDiv);
                var absoluteMousePos = d3.mouse(bodyNode);
                tooltipDiv.style({
                    left: (absoluteMousePos[0] + 10)+'px',
                    top: (absoluteMousePos[1] - 40)+'px',
                    'background-color': '#d8d5e4',
                    width: '65px',
                    height: '30px',
                    padding: '5px',
                    position: 'absolute',
                    'z-index': 1001,
                    'box-shadow': '0 1px 2px 0 #656565'
                });

var first_line = '<p>X-Value: ' + pD['Type'] + '</p>';
                var second_line = '<p>Y-Value: ' + pD['Post Month'] + '</p>';

tooltipDiv.html(first_line + second_line)
            })
                .on('mousemove.tooltip', function(pD, pI){
                    // Move tooltip
                    var absoluteMousePos = d3.mouse(bodyNode);
                    tooltipDiv.style({
                        left: (absoluteMousePos[0] + 10)+'px',
                        top: (absoluteMousePos[1] - 40)+'px'
                    });
                })
                .on('mouseout.tooltip', function(pD, pI){
                    // Remove tooltip
                    tooltipDiv.remove();
                });

}

tooltip.attr = function(_x){
            if (!arguments.length) return attrs;
            attrs = _x;
            return this;
        };

tooltip.style = function(_x){
            if (!arguments.length) return styles;
            styles = _x;
            return this;
        };

return tooltip;
    };

var width = 960,
        size = 230,
        padding = 20;

var x = d3.scale.linear()
        .range([padding / 2, size - padding / 2]);

var y = d3.scale.linear()
        .range([size - padding / 2, padding / 2]);

var xAxis = d3.svg.axis()
        .scale(x)
        .orient("bottom")
        .ticks(7);

var yAxis = d3.svg.axis()
        .scale(y)
        .orient("left")
        .ticks(7);

var color = d3.scale.category10();

d3.csv("facebook.csv", function(data) {
        // transfer value from string to number
        _.each(data, function (ele) {
            _.each(Object.keys(ele), function (key) {
                if (key != 'Type') {
                    ele[key] = +ele[key];
                }
            });
        });

var attr2Domain = {},
            attrs = _.filter(d3.keys(data[0]), function(key) { return key !== "Type"; }),
            n = attrs.length;

_.each(attrs, function(attr) {
            attr2Domain[attr] = d3.extent(data, function(ele) { return ele[attr]; });
        });

xAxis.tickSize(size * n);
        yAxis.tickSize(-size * n);

var brush = d3.svg.brush()
            .x(x)
            .y(y)
            .on("brushstart", brushstart)
            .on("brush", brushmove)
            .on("brushend", brushend);

var svg = d3.select("body").append("svg")
            .attr("width", size * n + padding)
            .attr("height", size * n + padding)
            .append("g")
            .attr("transform", "translate(" + padding + "," + padding / 2 + ")");

svg.selectAll(".x.axis")
            .data(attrs)
            .enter().append("g")
            .attr("class", "x axis")
            .attr("transform", function(d, i) { return "translate(" + (n - i - 1) * size + ",0)"; })
            .each(function(d) { x.domain(attr2Domain[d]); d3.select(this).call(xAxis); });

svg.selectAll(".y.axis")
            .data(attrs)
            .enter().append("g")
            .attr("class", "y axis")
            .attr("transform", function(d, i) { return "translate(0," + i * size + ")"; })
            .each(function(d) { y.domain(attr2Domain[d]); d3.select(this).call(yAxis); });

var cell = svg.selectAll(".cell")
            .data(cross(attrs, attrs))
            .enter().append("g")
            .attr("class", "cell")
            .attr("transform", function(d) {
                return "translate(" + (n - d.i - 1) * size + "," + d.j * size + ")";
            });

// Titles for the diagonal.
        cell.filter(function(d) { return d.i === d.j; }).append("text")
            .attr("x", padding)
            .attr("y", padding)
            .attr("dy", ".71em")
            .text(function(d) { return d.x; });

cell.call(brush);
        cell.each(plot);

function plot(p) {
            var cell = d3.select(this);

x.domain(attr2Domain[p.x]);
            y.domain(attr2Domain[p.y]);

cell.append("rect")
                .attr("class", "frame")
                .attr("x", padding / 2)
                .attr("y", padding / 2)
                .attr("width", size - padding)
                .style("pointer-events", "none")
                .attr("height", size - padding);

cell.selectAll("circle")
                .data(data)
                .enter().append("circle")
                .attr("cx", function (d) {
                    return x(d[p.x]);
                })
                .attr("cy", function (d) {
                    return y(d[p.y]);
                })
                .attr("r", 4)
                .call(d3.helper.tooltip())
                .style("fill", function (d) {
                    return color(d.Type);
                });
        }

var brushCell;

// Clear the previously-active brush, if any.
        function brushstart(p) {
            if (brushCell !== this) {
                d3.select(brushCell).call(brush.clear());
                x.domain(attr2Domain[p.x]);
                y.domain(attr2Domain[p.y]);
                brushCell = this;
            }
        }

// Highlight the selected circles.
        function brushmove(p) {
            var e = brush.extent();
            svg.selectAll("circle").classed("hidden", function(d) {
                return e[0][0] > d[p.x] || d[p.x] > e[1][0]
                    || e[0][1] > d[p.y] || d[p.y] > e[1][1];
            });
        }

// If the brush is empty, select all circles.
        function brushend() {
            if (brush.empty()) svg.selectAll(".hidden").classed("hidden", false);
        }
    });

function cross(a, b) {
        var c = [], n = a.length, m = b.length, i, j;
        for (i = -1; ++i < n;) for (j = -1; ++j < m;) c.push({x: a[i], i: i, y: b[j], j: j});
        return c;
    }

</script>

https://d3js.org/d3.v3.min.js

https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.3/underscore-min.js