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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,284 @@ | ||
| // D3 maps | ||
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| r2d3.onRender(function(json, svg, width, height, options) { | ||
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| // utils | ||
| // https://gist.github.com/mbostock/4699541 | ||
| function clicked(d) { | ||
| if (active.node() === this) return reset(); | ||
| active.classed("active", false); | ||
| active = d3.select(this).classed("active", true); | ||
| var bounds = path.bounds(d), | ||
| dx = bounds[1][0] - bounds[0][0], | ||
| dy = bounds[1][1] - bounds[0][1], | ||
| x = (bounds[0][0] + bounds[1][0]) / 2, | ||
| y = (bounds[0][1] + bounds[1][1]) / 2, | ||
| scale = 0.8 / Math.max(dx / width, dy / height), | ||
| translate = [width / 2 - scale * x, height / 2 - scale * y]; | ||
| g.transition() | ||
| .duration(750) | ||
| .style("stroke-width", 1.5 / scale + "px") | ||
| .attr("transform", "translate(" + translate + ")scale(" + scale + ")"); | ||
| } | ||
| function reset() { | ||
| active.classed("active", false); | ||
| active = d3.select(null); | ||
| g.transition() | ||
| .duration(750) | ||
| .style("stroke-width", "1.5px") | ||
| .attr("transform", ""); | ||
| } | ||
| // https://bl.ocks.org/iamkevinv/0a24e9126cd2fa6b283c6f2d774b69a2 | ||
| function zoomed() { | ||
| g.style("stroke-width", 1.5 / d3.event.transform.k + "px"); | ||
| g.attr("transform", d3.event.transform); // updated for d3 v4 | ||
| } | ||
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| // global variables | ||
| var map, projection, active = d3.select(null); | ||
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| // Projection | ||
| if (options.projection == "Mercator") { | ||
| projection = d3.geoMercator(); | ||
| } else if (options.projection == "ConicEqualArea") { | ||
| projection = d3.geoConicEqualArea(); | ||
| } else if (options.projection == "NaturalEarth") { | ||
| projection = d3.geoNaturalEarth1(); | ||
| } else { | ||
| projection = d3.geoAlbers(); | ||
| } | ||
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| var path = d3.geoPath() | ||
| .projection(projection); | ||
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| svg.attr("width", width) | ||
| .attr("height", height); | ||
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| var states = topojson.feature(json, json.objects.states); | ||
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| // set projection | ||
| projection | ||
| .scale(1) | ||
| .translate([0, 0]); | ||
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| // define bounding box & associated scale & transform | ||
| var b = path.bounds(states), | ||
| s = 0.9 / Math.max((b[1][0] - b[0][0]) / width, (b[1][1] - b[0][1]) / height), | ||
| t = [(width - s * (b[1][0] + b[0][0])) / 2, (height - s * (b[1][1] + b[0][1])) / 2]; | ||
|
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| // re-project | ||
| projection | ||
| .scale(s) | ||
| .translate(t); | ||
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| // Tooltip | ||
| var div = d3.select("body").append("div") | ||
| .attr("class", "tooltip") | ||
| .style("opacity", 0); | ||
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| // main g | ||
| var g = svg.append("g"); | ||
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| // colors | ||
| if (options !== null) { | ||
| if (typeof options.colors != 'undefined') { | ||
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| // discrete colors | ||
| if (options.colors.color_type == 'discrete') { | ||
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| var ordinal = d3.scaleOrdinal() | ||
| .domain(options.colors.values) | ||
| .range(options.colors.colors); | ||
| map = g.append("g") | ||
| .attr("class", "feature") | ||
| .selectAll("path") | ||
| .data(topojson.feature(json, json.objects.states).features) | ||
| .enter().append("path") | ||
| .attr("fill", function(d) { return ordinal(d.properties[options.colors.color_var]); }) | ||
| .attr("d", path); | ||
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| if (options.legend) { | ||
| // Legend | ||
| var gd = g.append("g") | ||
| .attr("class", "legendThreshold") | ||
| .attr("transform", "translate(10," + (height/2) + ")"); | ||
| gd.append("text") | ||
| .attr("class", "caption") | ||
| .attr("x", 0) | ||
| .attr("y", -6) | ||
| .text(options.legend_opts.title); | ||
| var legend = d3.legendColor() | ||
| .orient("vertical") | ||
| .labels(function (d) { return options.colors.values[d.i]; }) | ||
| .cellFilter(function (d) { if (typeof d.label === 'undefined') { return false; } else { return true; } }) | ||
| .shapePadding(4) | ||
| .scale(ordinal); | ||
| g.select(".legendThreshold") | ||
| .call(legend); | ||
| } | ||
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| } | ||
|
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| // continuous colors | ||
| if (options.colors.color_type == 'continuous') { | ||
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| var x = d3.scaleLinear() | ||
| .range([1, 200]) | ||
| .domain(options.colors.range_var); | ||
| var color = d3.scaleThreshold() | ||
| .domain(options.colors.range_col) | ||
| .range(options.colors.colors); | ||
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| if (options.legend) { | ||
| var gc = svg.append("g") | ||
| .attr("class", "key") | ||
| .attr("transform", "translate(10," + (height - 30) + ")"); | ||
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| gc.selectAll("rect") | ||
| .data(color.range().map(function(d) { | ||
| d = color.invertExtent(d); | ||
| if (d[0] === null) d[0] = x.domain()[0]; | ||
| if (d[1] === null) d[1] = x.domain()[1]; | ||
| return d; | ||
| })) | ||
| .enter().append("rect") | ||
| .attr("height", 8) | ||
| .attr("x", function(d) { return x(d[0]); }) | ||
| .attr("width", function(d) { return x(d[1]) - x(d[0]); }) | ||
| .attr("fill", function(d) { return color(d[0]); }); | ||
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| gc.append("text") | ||
| .attr("class", "caption") | ||
| .attr("x", 0) | ||
| .attr("y", -6) | ||
| .attr("fill", "#000") | ||
| .attr("text-anchor", "start") | ||
| .attr("font-weight", "bold") | ||
| .text(options.legend_opts.title); | ||
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| gc.call(d3.axisBottom(x) | ||
| .tickSize(13) | ||
| .tickFormat(function(x, i) { | ||
| if (options.legend_opts.d3_format) { | ||
| return d3.format(options.legend_opts.d3_format)(x); | ||
| } else { | ||
| return options.legend_opts.prefix + x + options.legend_opts.suffix; | ||
| } | ||
| }) | ||
| .tickValues(color.domain())) | ||
| .select(".domain") | ||
| .remove(); | ||
| } | ||
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| map = g.append("g") | ||
| .attr("class", "feature") | ||
| .selectAll("path") | ||
| .data(topojson.feature(json, json.objects.states).features) | ||
| .enter().append("path") | ||
| .attr("fill", function(d) { return color(d.properties[options.colors.color_var]); }) | ||
| .attr("d", path); | ||
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| } | ||
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| } else { | ||
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| map = g.append("g") | ||
| .attr("class", "feature") | ||
| .selectAll("path") | ||
| .data(topojson.feature(json, json.objects.states).features) | ||
| .enter().append("path") | ||
| .attr("fill", "#5f799c") | ||
| .attr("d", path); | ||
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| } | ||
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| } else { | ||
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| g.append("path") | ||
| .datum(states) | ||
| .attr("class", "feature") | ||
| .attr("d", path); | ||
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| } | ||
|
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| if (options !== null) { | ||
|
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| // Zooming | ||
| if (options.zoom) { | ||
| if (options.zoom_opts.click) { | ||
| map.on("click", clicked); | ||
| } | ||
| if (options.zoom_opts.wheel) { | ||
| var zoom = d3.zoom() | ||
| .scaleExtent([1, 8]) | ||
| .on("zoom", zoomed); | ||
| svg.call(zoom); | ||
| } | ||
| } | ||
|
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| if (options.tooltip) { | ||
|
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| // Tooltip | ||
| g.selectAll("path") | ||
| .on("mouseover", function(d, i) { | ||
| d3.select(this).attr("opacity", 0.5); | ||
| // console.log(options.tooltip_value[i]); | ||
| if (options.tooltip_value[i] !== null) { | ||
| div.transition() | ||
| .duration(200) | ||
| .style("opacity", 0.9); | ||
| div.html(options.tooltip_value[i]) | ||
| .style("left", (d3.event.pageX) + "px") | ||
| .style("top", (d3.event.pageY - 28) + "px"); | ||
| } | ||
| }) | ||
| .on("mouseout", function(d) { | ||
| d3.select(this).attr("opacity", 1); | ||
| div.transition() | ||
| .duration(500) | ||
| .style("opacity", 0); | ||
| }); | ||
|
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| } | ||
| } | ||
|
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| if (options !== null) { | ||
| if (typeof options.labs != 'undefined') { | ||
| if (typeof options.labs.title != 'undefined') { | ||
| var title = g.append("g") | ||
| .attr("class", "title") | ||
| .attr("transform", "translate(10,20)"); | ||
| title.append("text") | ||
| .attr("class", "title") | ||
| .attr("x", 0) | ||
| .attr("y", -2) | ||
| .attr("fill", "#000") | ||
| .attr("text-anchor", "start") | ||
| .attr("font-weight", "bold") | ||
| .text(options.labs.title); | ||
| } | ||
| if (typeof options.labs.caption != 'undefined') { | ||
| g.append("text") | ||
| .attr("class", "caption") | ||
| .attr("x", width) | ||
| .attr("y", height-5) | ||
| //.attr("startOffset", "100%") | ||
| .attr("text-anchor", "end") | ||
| .attr("font-size", "90%") | ||
| .text(options.labs.caption); | ||
| } | ||
| } else { | ||
| //console.log("nope"); | ||
| } | ||
| } | ||
|
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| g.append("path") | ||
| .datum(topojson.mesh(json, json.objects.states, function(a, b) { return a !== b; })) | ||
| .attr("class", "mesh") | ||
| .attr("d", path); | ||
|
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| }); |
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