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Last active August 29, 2015 14:05
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Dynamic Scatterplot - Autos
Raw
README.md

Dynamic scatterplot of the 1985 automobiles dataset.

Controls:

  • Left click to choose X-axis.
  • Right click to choose Y-axis.
  • Alt + right click to choose color axis.
  • Repeat click (left, right, or alt) for log scale.
  • Hover over a point to see all field values.
  • Click a multi-point (larger circle) to cycle through values.
  • Drag box to zoom in.
  • Click on empty area to zoom out.
  • Choose plot granularity with keys 1-9 (1 is the default).
Raw
autos.json
{"fields":[{"id":"000000","preferred":true,"summary":{"missing_count":0,"categories":[["toyota",32],["nissan",18],["mazda",16],["honda",13],["mitsubishi",13],["subaru",12],["volkswagen",12],["peugot",11],["volvo",11],["bmw",8],["dodge",8],["mercedes-benz",8],["plymouth",7],["audi",6],["saab",6],["porsche",4],["alfa-romero",3],["chevrolet",3],["jaguar",3],["isuzu",2],["mercury",1]]},"datatype":"string","order":0,"term_analysis":{"enabled":true},"optype":"categorical","name":"Make","column_number":0},{"id":"000001","preferred":true,"summary":{"missing_count":0,"categories":[["gas",178],["diesel",19]]},"datatype":"string","order":1,"term_analysis":{"enabled":true},"optype":"categorical","name":"Fuel","column_number":1},{"id":"000002","order":2,"optype":"categorical","name":"Doors","column_number":2,"preferred":true,"summary":{"missing_count":0,"categories":[["2-door",85],["4-door",112]]}},{"id":"000003","preferred":true,"summary":{"missing_count":0,"categories":[["sedan",92],["hatchback",67],["wagon",24],["hardtop",8],["convertible",6]]},"datatype":"string","order":3,"term_analysis":{"enabled":true},"optype":"categorical","name":"Body","column_number":3},{"id":"000004","preferred":true,"summary":{"missing_count":0,"categories":[["fwd",114],["rwd",75],["4wd",8]]},"datatype":"string","order":4,"term_analysis":{"enabled":true},"optype":"categorical","name":"Drive","column_number":4},{"id":"000005","preferred":true,"summary":{"splits":[154.30374,157.23856,157.41626,158.43808,159.20315,165.28012,166.04861,166.66088,168.16145,168.86008,169.01938,170.16922,171.48348,171.87215,172.33567,173.10704,173.43281,174.7625,175.53445,176.11141,176.70208,177.68275,179.83511,183.9125,186.61492,186.76667,188.14365,188.81646,189.50469,193.21615,199.0778],"mean":174.21827,"sum_squares":6009353.9,"bins":[[141.1,1],[144.6,2],[150,3],[155.9,1],[157.3,17],[158.9375,8],[162.4,1],[163.4,1],[165.3875,8],[166.41111,9],[167.4,4],[168.87333,15],[170.31111,9],[172.00588,17],[173.30769,13],[175.28333,12],[176.46667,12],[177.9,8],[180.23333,3],[181.7,1],[183.36667,3],[184.6,2],[186.65385,13],[187.7,3],[188.83077,13],[191.16667,3],[192.7,3],[193.8,1],[197,1],[199.14286,7],[202.6,2],[208.1,1]],"maximum":208.1,"missing_count":0,"variance":153.10466,"median":173.10704,"population":197,"minimum":141.1,"standard_deviation":12.37355,"sum":34321},"datatype":"double","order":5,"optype":"numeric","name":"Length","column_number":5},{"id":"000006","preferred":true,"summary":{"splits":[1877.03628,1913.77699,1944.96875,1972.75,2008.5625,2031.9375,2115.53125,2148.10011,2211.71875,2264.0625,2289.19896,2302.75,2337.04706,2380.44862,2396.375,2413,2467.34375,2535.4589,2570.5,2689,2747.21718,2807.5,2844.28125,2939.25,3017.625,3057.8125,3092.46875,3149.58359,3246.84375,3486.875,3743.4375],"mean":2558.45685,"sum_squares":1342865464,"bins":[[1488,1],[1713,1],[1828,2],[1897.54545,11],[1962.92857,14],[2023.36364,11],[2087.5,2],[2134,9],[2212.875,8],[2282.3125,16],[2330.14286,7],[2395.05,20],[2482.14286,7],[2548.33333,9],[2684.4,10],[2757.83333,6],[2823.11111,9],[2920.8,5],[2964.25,4],[3016,3],[3066.07692,13],[3141.16667,6],[3229.66667,6],[3290.5,2],[3380,1],[3430,1],[3500,4],[3700,2],[3753.33333,3],[3900,1],[3950,1],[4066,2]],"maximum":4066,"missing_count":0,"variance":272256.50451,"median":2413,"population":197,"minimum":1488,"standard_deviation":521.78205,"sum":504016},"datatype":"int16","order":6,"optype":"numeric","name":"Weight","column_number":6},{"id":"000007","preferred":true,"summary":{"counts":[[2,4],[3,1],[4,153],[5,10],[6,24],[8,4],[12,1]],"mean":4.37056,"sum_squares":3987,"maximum":12,"missing_count":0,"variance":1.1426,"median":4.11757,"population":197,"minimum":2,"standard_deviation":1.06892,"sum":861},"datatype":"int8","order":7,"optype":"numeric","name":"Cylinders","column_number":7},{"id":"000008","preferred":true,"summary":{"splits":[82.86606,90.13586,90.99377,91.7145,92.76431,94.86731,97.0067,97.45378,97.91614,100.54499,106.79661,108.27406,108.88317,109.56783,110.1184,119,120.31513,121.25778,121.84834,124.67709,130.37229,135.97491,140.6943,145.17417,149.36609,153.41682,159.99653,171.65479,181.5342,191.14439,232.0836],"mean":126.99492,"sum_squares":3521474,"bins":[[61,1],[70,3],[79.5,2],[90.33333,15],[92,15],[97.48148,27],[103,1],[108.38095,21],[110.07692,13],[119.875,8],[121.7,20],[130.2,5],[134,2],[136,5],[140.77778,9],[145.85714,7],[151,1],[152,6],[156,5],[161,1],[164,3],[171,3],[173,1],[181,6],[183,4],[194,3],[209,3],[234,2],[258,2],[304,1],[308,1],[326,1]],"maximum":326,"missing_count":0,"variance":1756.70916,"median":119,"population":197,"minimum":61,"standard_deviation":41.91311,"sum":25018},"datatype":"int16","order":8,"optype":"numeric","name":"Engine size","column_number":8},{"id":"000009","preferred":true,"summary":{"splits":[57.40192,63.09572,66.2332,68.06007,68.42626,68.8984,69.52305,70.42997,73.82975,78.22474,83.2875,85.1225,87.3033,89.80152,93.42609,95.2918,97.75,100.96842,103.07762,110.01569,111.07159,113.80624,115.60921,117.80742,122.43303,141.125,147.59929,155.1875,160.22089,175.1726,183.84669],"mean":103.60406,"sum_squares":2392234,"bins":[[48,1],[52,2],[55.66667,3],[59,2],[62,6],[68.73684,38],[72.75,4],[76.33333,6],[82,5],[84.91667,12],[88.66667,9],[92,4],[94.77778,9],[97,5],[101.16667,12],[106,1],[110.57143,14],[115.1875,16],[120.75,4],[123,4],[134.5,2],[140,1],[142.5,2],[145,5],[152,3],[155.2,5],[160.66667,9],[175.66667,3],[182.8,5],[200,1],[207,3],[262,1]],"maximum":262,"missing_count":0,"variance":1416.70978,"median":95.2918,"population":197,"minimum":48,"standard_deviation":37.63921,"sum":20410},"datatype":"int16","order":9,"optype":"numeric","name":"Horsepower","column_number":9},{"id":"00000a","preferred":true,"summary":{"counts":[[4150,5],[4200,5],[4250,3],[4350,4],[4400,3],[4500,7],[4750,4],[4800,36],[4900,1],[5000,27],[5100,3],[5200,23],[5250,7],[5300,1],[5400,11],[5500,35],[5600,1],[5800,7],[5900,3],[6000,9],[6600,2]],"mean":5118.0203,"sum_squares":5205597500,"maximum":6600,"missing_count":0,"variance":231395.55061,"median":5132.16991,"population":197,"minimum":4150,"standard_deviation":481.03591,"sum":1008250},"datatype":"int16","order":10,"optype":"numeric","name":"Peak 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-webkit-user-select: none; /* webkit (safari, chrome) browsers */
-moz-user-select: none; /* mozilla browsers */
-khtml-user-select: none; /* webkit (konqueror) browsers */
-ms-user-select: none; /* IE10+ */
}
.field-marker {
}
</style>
<body oncontextmenu="return false;">
<script src="http://d3js.org/d3.v3.min.js"></script>
<script>
function getParam(key) {
if(key=(new RegExp('[?&]'+encodeURIComponent(key)+'=([^&]*)'))
.exec(location.search))
return decodeURIComponent(key[1]);
}
function setParam(key, value) {
key = encodeURI(key); value = encodeURI(value);
var s = document.location.search;
var kvp = key+"="+value;
var r = new RegExp("(&|\\?)"+key+"=[^\&]*");
s = s.replace(r,"$1"+kvp);
if(!RegExp.$1) {s += (s.length>0 ? '&' : '?') + kvp;};
window.history.replaceState({}, "", s);
}
function removeParam(key) {
var sourceURL = document.location.search;
var rtn = sourceURL.split("?")[0],
param,
params_arr = [],
queryString = (sourceURL.indexOf("?") !== -1) ? sourceURL.split("?")[1] : "";
if (queryString !== "") {
params_arr = queryString.split("&");
for (var i = params_arr.length - 1; i >= 0; i -= 1) {
param = params_arr[i].split("=")[0];
if (param === key) {
params_arr.splice(i, 1);
}
}
rtn = rtn + "?" + params_arr.join("&");
}
window.history.replaceState({}, "", rtn);
}
var margin = {top: 20, right: 20, bottom: 20, left: 20},
width = 1000 - margin.left - margin.right,
height = 640 - margin.bottom - margin.top;
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 + ")");
d3.json("autos.json", function(error, data) {
var fields = data.fields;
var rows = data.rows;
var shows;
var buffer = width / 20;
var field_size = width / 4;
var right_fields = 250;
var plotWidth = width - 2 * buffer - right_fields;
var plotHeight = 0.75 * height;
resetConstraints();
function resetConstraints() {
for (var i = 0; i < fields.length; i++) {
fields[i].constraint = false;
}
shows = [];
for (var i = 0; i < rows.length; i++) {
shows.push(true);
}
evalConstraints();
}
function evalConstraints() {
var visiblePoints = 0;
for (var i = 0; i < rows.length; i++) {
var show = true;
for (var j = 0; j < fields.length && show; j++) {
var field = fields[j];
if (field.constraint) {
var val = rows[i][j];
if ((field.optype == "numeric" &&
(val < field.minConstraint || val > field.maxConstraint)) ||
(field.optype == "categorical" && !(val in field.catConstraint))) {
show = false;
}
}
}
if (show) visiblePoints += 1;
shows[i] = show;
}
if (visiblePoints == 0) {
resetConstraints();
} else {
r = Math.pow((6 * Math.min(plotWidth, plotHeight)) / Math.min(visiblePoints, 1024), 0.5);
}
}
var brushX = d3.scale.identity().domain([buffer, plotWidth]),
brushY = d3.scale.identity().domain([0, plotHeight]);
var brushExtent;
var brush = d3.svg.brush()
.x(brushX)
.y(brushY)
.on("brush", brushed)
.on("brushend", brushended);
svg.append("g")
.attr("class", "brush")
.call(brush)
.call(brush.event);
function brushed() {
brushExtent = brush.extent();
}
function brushended() {
var validConstraint = true;
if (!d3.event.sourceEvent) return; // only transition after input
if (fields[x].optype == "numeric") {
fields[x].minConstraint = xScale.invert(brushExtent[0][0]);
fields[x].maxConstraint = xScale.invert(brushExtent[1][0]);
} else {
var cats = fields[x].cats;
var selected = {};
for (var i = 0; i < cats.length; i++) {
var val = xScale(cats[i]);
if (val >= brushExtent[0][0] && val <= brushExtent[1][0]) {
selected[cats[i]] = true;
}
}
if (Object.keys(selected).length == 0) {
validConstraint = false;
}
fields[x].catConstraint = selected;
}
if (fields[y].optype == "numeric") {
fields[y].minConstraint = yScale.invert(brushExtent[1][1]);
fields[y].maxConstraint = yScale.invert(brushExtent[0][1]);
} else {
var cats = fields[y].cats;
var selected = {};
for (var i = 0; i < cats.length; i++) {
var val = yScale(cats[i]);
if (val >= brushExtent[0][1] && val <= brushExtent[1][1]) {
selected[cats[i]] = true;
}
}
if (Object.keys(selected).length == 0) {
validConstraint = false;
}
fields[y].catConstraint = selected;
}
d3.select(this).call(brush.extent([[0, 0], [0, 0]]));
if (validConstraint) {
fields[x].constraint = true;
fields[y].constraint = true;
evalConstraints();
} else {
resetConstraints();
}
updateForClick();
}
var maxNameChars = 0;
for (var i = 0; i < fields.length; i++) {
maxNameChars = Math.max(maxNameChars, fields[i].name.length);
}
var valueOffset = 9 * maxNameChars;
for (var i = 0; i < fields.length; i++) {
fields[i].constraint = false;
makeField(fields[i], i);
calcRange(i);
}
var hintY = i * 28;
var hintX = width - right_fields - buffer;
hint = svg.append("g").attr("class", "hint").style("font-size","12px");
hint.append("text")
.attr("transform", "translate(" + hintX + "," + (hintY + 20) + ")")
.text("Left click --> Set X Axis");
hint.append("text")
.attr("transform", "translate(" + hintX + "," + (hintY + 35) + ")")
.text("Right click --> Set Y Axis");
hint.append("text")
.attr("transform", "translate(" + hintX + "," + (hintY + 50) + ")")
.text("Alt + left click --> Set Color");
var fcX = width - right_fields - buffer + valueOffset;
var fcY = -5;
svg.append("g").attr("class", "field-counter").append("text")
.attr("transform", "translate(" + fcX + "," + fcY + ")");
var gx, gy;
var xAxis, yAxis;
var xScale;
var yScale;
var uniqueMap;
var xMap;
var yMap;
var colorMap;
var colorFn;
var currentRow = null;
var currentIds;
var x = getParam("x");
var y = getParam("y");
var c = getParam("c");
if (x == null) x = 9;
if (y == null) y = 11;
if (c == null) c = fields.length - 1;
setParam("x", x);
setParam("y", y);
setParam("c", c);
var xLogMode = getParam("xLog");
var yLogMode = getParam("yLog");
var cLogMode = getParam("cLog");
if (xLogMode == null) xLogMode = false;
if (yLogMode == null) yLogMode = false;
if (cLogMode == null) cLogMode = false;
var granularity = getParam("g");
if (granularity == null) granularity = 1;
var pointIndex = 0;
var r;
makeAxis();
makePoints();
updateForClick();
function genKey(row) {
var xVal, yVal;
var g = 1 + ((granularity - 1) * 5);
if (fields[x].optype == "numeric") {
xVal = Math.round(xScale(row[x]) / g) * g;
} else {
xVal = row[x];
}
if (fields[y].optype == "numeric") {
yVal = Math.round(yScale(row[y]) / g) * g;
} else {
yVal = row[y];
}
return xVal.toString() + "," + yVal.toString();
}
d3.select("body").on("keydown", keydown);
function keydown() {
var needUpdate = true;
var lastKeyDown = d3.event.keyCode;
if (lastKeyDown >= 49 && lastKeyDown <= 57) {
granularity = lastKeyDown - 48;
if (granularity == 1) {
removeParam("g");
} else {
setParam("g", granularity);
}
updateForClick();
}
}
function updateForClick() {
updateScales();
updateUniqueMap();
updateColorFn();
updatePoints();
updateFieldMarkers();
updateAxis();
}
function makeField(field, index) {
var x_loc = width - right_fields - buffer;
var y_loc = 20 + index * 28;
var field_text = svg.append("g")
.attr("class", "field");
field_text.append("text")
.attr("class", "field")
.attr("transform", "translate(" + x_loc + "," + y_loc + ")")
.on("click", function() {
if (d3.event.altKey) {
if (c == index && fields[c].optype == "numeric") {
cLogMode = !cLogMode;
} else {
cLogMode = false;
}
if (cLogMode == true) {
setParam("cLog", true);
} else {
removeParam("cLog");
}
c = index;
setParam("c", index);
} else {
if (x == index && fields[x].optype == "numeric") {
xLogMode = !xLogMode;
} else {
xLogMode = false;
}
if (xLogMode == true) {
setParam("xLog", true);
} else {
removeParam("xLog");
}
x = index;
setParam("x", index);
}
updateForClick();
})
.on("contextmenu", function() {
if (y == index && fields[y].optype == "numeric") {
yLogMode = !yLogMode;
} else {
yLogMode = false;
}
if (yLogMode == true) {
setParam("yLog", true);
} else {
removeParam("yLog");
}
y = index;
setParam("y", index);
updateForClick();
})
.text(field.name);
svg.append("g")
.append("text")
.attr("class", "field-value")
.attr("transform", "translate(" + (valueOffset + x_loc) + "," + y_loc + ")");
svg.append("g")
.append("text")
.attr("class", "field-marker")
.attr("transform", "translate(" + (-6 + x_loc) + "," + y_loc + ")")
.style("text-anchor", "end")
.text("");
}
function makeAxis() {
gy = svg.append("g")
.attr("class", "y-axis")
.attr("transform", "translate(" + buffer + "," + 0 + ")");
gx = svg.append("g")
.attr("class", "x-axis")
.attr("transform", "translate(" + 0 + "," + plotHeight + ")");
}
function updateAxis() {
var currentY = gy.transition()
.duration(700)
.call(yAxis);
if (fields[y].optype == "categorical") {
currentY.selectAll("text")
.attr("y", 10)
.attr("x", 2)
.style("fill", "#999")
.style("font-size", "13")
.style("text-anchor", "start");
}
var currentX = gx.transition()
.duration(700)
.call(xAxis);
if (fields[x].optype == "categorical") { // && fields[x].cats.length > 4) {
currentX.selectAll("text")
.attr("y", 5)
.attr("x", 2)
.attr("transform", "rotate(-90)")
.style("fill", "#999")
.style("font-size", "13")
.style("text-anchor", "start");
}
}
function updateFieldMarkers() {
var ids = Array.apply(null, Array(fields.length)).map(function (_, i) {return i;});
svg.selectAll(".field-marker")
.data(ids)
.text(function(d) {
var marker = "";
if (d == x) {
if (xLogMode) {
marker += "x";
} else {
marker += "X";
}
}
if (d == y) {
if (yLogMode) {
marker += "y";
} else {
marker += "Y";
}
}
if (d == c) {
if (cLogMode) {
marker += "c";
} else {
marker += "C";
}
}
if (marker != "") { marker += ":"};
return marker;
})
}
function updateFieldValues() {
var ids = Array.apply(null, Array(fields.length)).map(function (_, i) {return i;});
var currentRow;
if (currentIds != null) {
currentRow = rows[currentIds[pointIndex % currentIds.length]];
}
svg.selectAll(".field-value")
.data(ids)
.text(function(d) {
var val = "";
if (currentRow != null) {
val += currentRow[d].toString();
}
return val;
});
svg.select(".field-counter").select("text")
.text(function(d) {
var str = "";
if (currentIds != null && currentIds.length > 1) {
str += (1 + pointIndex % currentIds.length) + " of " + currentIds.length;
}
return str;
});
}
function updateUniqueMap() {
uniqueMap = {};
for (var i = 0; i < rows.length; i++) {
if (shows[i]) {
var key = genKey(rows[i]);
if (key in uniqueMap) {
uniqueMap[key].push(i);
} else {
uniqueMap[key] = [i];
}
}
}
colorMap = {};
xMap = {};
yMap = {};
for (var key in uniqueMap) {
var ids = uniqueMap[key];
if (ids.length > 1) {
if (fields[x].optype == "numeric") {
var sum = 0;
for (var j = 0; j < ids.length; j++) {
sum += rows[ids[j]][x];
}
xMap[key] = sum / ids.length;
} else {
xMap[key] = rows[ids[0]][x];
}
if (fields[y].optype == "numeric") {
var sum = 0;
for (var j = 0; j < ids.length; j++) {
sum += rows[ids[j]][y];
}
yMap[key] = sum / ids.length;
} else {
yMap[key] = rows[ids[0]][y];
}
if (fields[c].optype == "numeric") {
var sum = 0;
for (var j = 0; j < ids.length; j++) {
sum += rows[ids[j]][c];
}
colorMap[key] = sum / ids.length;
} else {
var cat_counts = {};
for (var j = 0; j < ids.length; j++) {
var cat = rows[ids[j]][c];
if (cat in cat_counts) {
cat_counts[cat] = cat_counts[cat] + 1;
} else {
cat_counts[cat] = 1;
}
}
var max_count = 0;
var max_cat;
for (cat in cat_counts) {
if (cat_counts[cat] > max_count) {
max_count = cat_counts[cat];
max_cat = cat;
}
}
colorMap[key] = max_cat;
if (rows[ids[0]][c] != max_cat) {
for (var j = 0; j < ids.length; j++) {
if (rows[ids[j]][c] == max_cat) {
var temp = ids[0];
ids[0] = ids[j];
ids[j] = temp;
break;
}
}
}
}
} else {
colorMap[key] = rows[ids[0]][c];
xMap[key] = rows[ids[0]][x];
yMap[key] = rows[ids[0]][y];
}
}
}
function updateColorFn() {
if (fields[c].optype == "numeric") {
if (cLogMode && fields[c].min > 0) {
colorFn = d3.scale.log()
.domain([fields[c].min, fields[c].max])
.range(["#3f3", "#f55"])
} else {
if (cLogMode) removeParam("cLog");
colorFn = d3.scale.linear()
.domain([fields[c].min, fields[c].max])
.range(["#3f3", "#f55"])
}
} else {
if (fields[c].cats.length <= 10) {
colorFn = d3.scale.category10().domain(fields[c].cats);
} else {
colorFn = d3.scale.category20().domain(fields[c].cats);
}
}
}
function calcRange(col) {
if (fields[col].optype == "numeric") {
var min = rows[0][col];
var max = rows[0][col];
for (var i = 0; i < rows.length; i++) {
min = Math.min(min, rows[i][col]);
max = Math.max(max, rows[i][col]);
}
fields[col].min = min;
fields[col].max = max;
} else {
var categories = {};
for (var i = 0; i < rows.length; i++) {
var val = rows[i][col];
if (val == null || val == "") {
val = "?";
rows[i][col] = val;
}
categories[val] = true;
}
var finalCats = [];
for (var cat in categories) {
finalCats.push(cat);
}
fields[col].cats = finalCats.sort();
}
}
function updateScale(col, rangeMin, rangeMax, isX) {
if (fields[col].optype == "numeric") {
var firstIndex;
for (firstIndex = 0; firstIndex < shows.length; firstIndex++) {
if (shows[firstIndex]) {
break;
}
}
var min = rows[firstIndex][col];
var max = rows[firstIndex][col];
var uniques = {};
var uniqueCount = 0;
for (var i = 0; i < rows.length; i++) {
if (shows[i]) {
var key = rows[i][col].toString();
if (!(key in uniques)) {
uniques[key] = true;
uniqueCount += 1;
}
min = Math.min(min, rows[i][col]);
max = Math.max(max, rows[i][col]);
}
}
if (min == max) {
var buf = (fields[col].max - fields[col].min) / 100;
if (buf == 0) {
buf = 0.1;
}
min -= buf;
max += buf;
}
if (min > 0 && ((col == x && xLogMode && isX) || (col == y && yLogMode && !isX))) {
return d3.scale.log()
.range([rangeMin, rangeMax])
.domain([min, max]);
} else {
if (min <= 0 && ((col == x && xLogMode && isX) || (col == y && yLogMode && !isX))) {
if (isX) {
xLogMode = false;
removeParam("xLog");
} else {
yLogMode = false;
removeParam("yLog");
}
}
var diff = max - min;
if (uniqueCount > 4) {
max += diff / 30;
min -= diff / 30;
} else {
max += diff / 5;
min -= diff / 5;
}
return d3.scale.linear()
.range([rangeMin, rangeMax])
.domain([min, max]);
}
} else {
if (isX) {
xLogMode = false;
} else {
yLogMode = false;
}
var categories = {};
for (var i = 0; i < rows.length; i++) {
if (shows[i]) {
categories[rows[i][col]] = true;
}
}
var finalCats = [];
for (var cat in categories) {
if (!fields[col].constraint || cat in fields[col].catConstraint) {
finalCats.push(cat);
}
}
return d3.scale.ordinal()
.domain(finalCats.sort())
.rangePoints([rangeMin, rangeMax], 1);
}
}
function updateScales () {
xScale = updateScale(x, buffer, plotWidth, true);
yScale = updateScale(y, plotHeight, 0, false);
xAxis = d3.svg.axis()
.scale(xScale)
.orient("bottom")
.tickPadding(10)
.tickSize(-plotHeight);
yAxis = d3.svg.axis()
.scale(yScale)
.orient("left")
.tickPadding(10)
.tickSize(-plotWidth + buffer);
}
function point_size(index) {
if (shows[index]) {
return r * Math.pow(uniqueMap[genKey(rows[index])].length, 0.5);
} else {
return r;
}
}
function makePoints() {
svg.selectAll(".data")
.data(Array.apply(null, Array(rows.length)).map(function (_, i) {return i;}))
.enter()
.append("g")
.attr("class", "data")
.style("opacity", "0")
.style("fill", "#fff")
.style("stroke", "#fff")
.style("stroke-width", "1.5")
.append("circle")
.attr("class", "point")
.on("click", function(d) {
pointIndex += 1;
updateFieldValues();
})
.on("mouseover", function(d) {
d3.select(this)
.attr("r", point_size(d) + Math.pow(point_size(d), 0.15) + 1);
currentIds = uniqueMap[genKey(rows[d])];
updateFieldValues();
})
.on("mouseout", function(d) {
d3.select(this)
.attr("r", (point_size(d)));
currentIds = null;
pointIndex = 0;
updateFieldValues();
});
}
function updatePoints() {
var transitions = 0;
svg.selectAll(".data")
.style("cursor", function (d) {
if (shows[d] && uniqueMap[genKey(rows[d])].length > 1) {
return "pointer";
} else {
return "auto";
}
})
.sort(function (a, b) {
var pa = point_size(a);
var pb = point_size(b);
if (pa == pb) {
if (a > b) {
return -1;
} else {
return 1;
}
}
if (pa > pb) {
return -1;
} else {
return 1;
}
})
.transition()
.duration(700)
.style("opacity", function (d) {
if (shows[d] && uniqueMap[genKey(rows[d])][0] == d) {
return "0.9";
} else {
return "0";
}
})
.style("fill", function(d) {
if (shows[d]) {
return colorFn(colorMap[genKey(rows[d])]);
} else {
return "#999";
}
})
.style("stroke", function(d) {
if (shows[d]) {
return d3.rgb(colorFn(colorMap[genKey(rows[d])])).darker(0.3);
} else {
return "#999";
}
})
.select(".point")
.attr("display", function (d) {
if (shows[d]) {
return "inherit";
} else {
return "none";
}
})
.attr("r", function(d) {
return point_size(d);
})
.attr("cx", function(d) {
var key = genKey(rows[d]);
if (key in xMap) {
return xScale(xMap[key]);
} else {
if (fields[x].optype == "numeric") {
return Math.round(xScale(rows[d][x]));
} else {
return xScale(rows[d][x]);
}
}
})
.attr("cy", function(d) {
var key = genKey(rows[d]);
if (key in yMap) {
return yScale(yMap[key]);
} else {
if (fields[y].optype == "numeric") {
return Math.round(yScale(rows[d][y]));
} else {
return yScale(rows[d][y]);
}
}
})
.transition()
.attr("display", function (d) {
if (shows[d] && uniqueMap[genKey(rows[d])][0] == d) {
return "inherit";
} else {
return "none";
}
});
}
});
</script>
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