-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathbrushable.html
475 lines (376 loc) · 17 KB
/
brushable.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
<!DOCTYPE html>
<head>
<meta charset="utf-8">
<title>Brushable bar chart - Horizontal - IV</title>
<!-- Google fonts -->
<link href='https://fonts.googleapis.com/css?family=Open+Sans:300,400' rel='stylesheet' type='text/css'>
<!-- <script src="d3.v3.js"></script> -->
<script src="//d3js.org/d3.v3.min.js"></script>
<style>
body {
font-size: 10px;
font-family: 'Open Sans', sans-serif;
font-weight: 400;
text-align: center;
}
#title {
font-size: 20px;
padding-bottom: 10px;
padding-top: 20px;
font-weight: 300;
}
#explanation {
font-size: 12px;
max-width: 620px;
margin: 0 auto;
padding-top: 10px;
color: #ababab;
font-weight: 300;
}
.y.axis line {
fill: none;
}
.x.axis line {
fill: none;
stroke: #e0e0e0;
shape-rendering: crispEdges;
}
.axis path {
display: none;
}
.brush .extent {
fill-opacity: .125;
shape-rendering: crispEdges;
}
.resize {
display: inline !important; /* show when empty */
fill: #7A7A7A;
fill-opacity: 1;
stroke: #7A7A7A;
stroke-width: 2px;
}
.bar {
/*shape-rendering: crispEdges;*/
}
</style>
</head>
<body>
<div id="title">Brushable horizontal bar chart - IV</div>
<div id="chart"></div>
<div id="explanation">You can see more or less of the total bar chart on the left by either dragging the box in the mini chart on the right or by scrolling your mouse. You can also click anywhere in the mini chart to center the box on that region. And you can increase and decrease the size of the box by dragging the top or bottom handle up or down.</div>
<script>
var data = [],
svg,
defs,
gBrush,
brush,
main_xScale,
mini_xScale,
main_yScale,
mini_yScale,
main_yZoom,
main_xAxis,
main_yAxis,
mini_width,
textScale;
init();
function init() {
//Create the random data
for (var i = 0; i < 8; i++) {
var my_object = {};
my_object.key = i;
my_object.country = makeWord(i);
my_object.value = Math.floor(Math.random() * 600);
data.push(my_object);
}//for i
data.sort(function(a,b) { return b.value - a.value; });
/////////////////////////////////////////////////////////////
///////////////// Set-up SVG and wrappers ///////////////////
/////////////////////////////////////////////////////////////
//Added only for the mouse wheel
var zoomer = d3.behavior.zoom()
.on("zoom", null);
var main_margin = {top: 10, right: 10, bottom: 30, left: 100},
main_width = 500 - main_margin.left - main_margin.right,
main_height = 400 - main_margin.top - main_margin.bottom;
var mini_margin = {top: 10, right: 10, bottom: 30, left: 10},
mini_height = 400 - mini_margin.top - mini_margin.bottom;
mini_width = 100 - mini_margin.left - mini_margin.right;
svg = d3.select("#chart").append("svg")
.attr("class", "svgWrapper")
.attr("width", main_width + main_margin.left + main_margin.right + mini_width + mini_margin.left + mini_margin.right)
.attr("height", main_height + main_margin.top + main_margin.bottom)
.call(zoomer)
.on("wheel.zoom", scroll)
//.on("mousewheel.zoom", scroll)
//.on("DOMMouseScroll.zoom", scroll)
//.on("MozMousePixelScroll.zoom", scroll)
//Is this needed?
.on("mousedown.zoom", null)
.on("touchstart.zoom", null)
.on("touchmove.zoom", null)
.on("touchend.zoom", null);
var mainGroup = svg.append("g")
.attr("class","mainGroupWrapper")
.attr("transform","translate(" + main_margin.left + "," + main_margin.top + ")")
.append("g") //another one for the clip path - due to not wanting to clip the labels
.attr("clip-path", "url(#clip)")
.style("clip-path", "url(#clip)")
.attr("class","mainGroup")
var miniGroup = svg.append("g")
.attr("class","miniGroup")
.attr("transform","translate(" + (main_margin.left + main_width + main_margin.right + mini_margin.left) + "," + mini_margin.top + ")");
var brushGroup = svg.append("g")
.attr("class","brushGroup")
.attr("transform","translate(" + (main_margin.left + main_width + main_margin.right + mini_margin.left) + "," + mini_margin.top + ")");
/////////////////////////////////////////////////////////////
////////////////////// Initiate scales //////////////////////
/////////////////////////////////////////////////////////////
main_xScale = d3.scale.linear().range([0, main_width]);
mini_xScale = d3.scale.linear().range([0, mini_width]);
main_yScale = d3.scale.ordinal().rangeBands([0, main_height], 0.4, 0);
mini_yScale = d3.scale.ordinal().rangeBands([0, mini_height], 0.4, 0);
//Based on the idea from: http://stackoverflow.com/questions/21485339/d3-brushing-on-grouped-bar-chart
main_yZoom = d3.scale.linear()
.range([0, main_height])
.domain([0, main_height]);
//Create x axis object
main_xAxis = d3.svg.axis()
.scale(main_xScale)
.orient("bottom")
.ticks(4)
//.tickSize(0)
.outerTickSize(0);
//Add group for the x axis
d3.select(".mainGroupWrapper").append("g")
.attr("class", "x axis")
.attr("transform", "translate(" + 0 + "," + (main_height + 5) + ")");
//Create y axis object
main_yAxis = d3.svg.axis()
.scale(main_yScale)
.orient("left")
.tickSize(0)
.outerTickSize(0);
//Add group for the y axis
mainGroup.append("g")
.attr("class", "y axis")
.attr("transform", "translate(-5,0)");
/////////////////////////////////////////////////////////////
/////////////////////// Update scales ///////////////////////
/////////////////////////////////////////////////////////////
//Update the scales
main_xScale.domain([0, d3.max(data, function(d) { return d.value; })]);
mini_xScale.domain([0, d3.max(data, function(d) { return d.value; })]);
main_yScale.domain(data.map(function(d) { return d.country; }));
mini_yScale.domain(data.map(function(d) { return d.country; }));
//Create the visual part of the y axis
d3.select(".mainGroup").select(".y.axis").call(main_yAxis);
d3.select(".mainGroupWrapper").select(".x.axis").call(main_xAxis);
/////////////////////////////////////////////////////////////
///////////////////// Label axis scales /////////////////////
/////////////////////////////////////////////////////////////
textScale = d3.scale.linear()
.domain([15,50])
.range([12,6])
.clamp(true);
/////////////////////////////////////////////////////////////
///////////////////////// Create brush //////////////////////
/////////////////////////////////////////////////////////////
//What should the first extent of the brush become - a bit arbitrary this
var brushExtent = Math.max( 1, Math.min( 20, Math.round(data.length*0.2) ) );
brush = d3.svg.brush()
.y(mini_yScale)
.extent([mini_yScale(data[0].country), mini_yScale(data[brushExtent].country)])
.on("brush", brushmove)
//.on("brushend", brushend);
//Set up the visual part of the brush
gBrush = d3.select(".brushGroup").append("g")
.attr("class", "brush")
.call(brush);
gBrush.selectAll(".resize")
.append("line")
.attr("x2", mini_width);
gBrush.selectAll(".resize")
.append("path")
.attr("d", d3.svg.symbol().type("triangle-up").size(20))
.attr("transform", function(d,i) {
return i ? "translate(" + (mini_width/2) + "," + 4 + ") rotate(180)" : "translate(" + (mini_width/2) + "," + -4 + ") rotate(0)";
});
gBrush.selectAll("rect")
.attr("width", mini_width);
//On a click recenter the brush window
gBrush.select(".background")
.on("mousedown.brush", brushcenter)
.on("touchstart.brush", brushcenter);
///////////////////////////////////////////////////////////////////////////
/////////////////// Create a rainbow gradient - for fun ///////////////////
///////////////////////////////////////////////////////////////////////////
defs = svg.append("defs")
//Create two separate gradients for the main and mini bar - just because it looks fun
createGradient("gradient-rainbow-main", "60%");
createGradient("gradient-rainbow-mini", "13%");
//Add the clip path for the main bar chart
defs.append("clipPath")
.attr("id", "clip")
.append("rect")
.attr("x", -main_margin.left)
.attr("width", main_width + main_margin.left)
.attr("height", main_height);
/////////////////////////////////////////////////////////////
/////////////// Set-up the mini bar chart ///////////////////
/////////////////////////////////////////////////////////////
//The mini brushable bar
//DATA JOIN
var mini_bar = d3.select(".miniGroup").selectAll(".bar")
.data(data, function(d) { return d.key; });
//UDPATE
mini_bar
.attr("width", function(d) { return mini_xScale(d.value); })
.attr("y", function(d,i) { return mini_yScale(d.country); })
.attr("height", mini_yScale.rangeBand());
//ENTER
mini_bar.enter().append("rect")
.attr("class", "bar")
.attr("x", 0)
.attr("width", function(d) { return mini_xScale(d.value); })
.attr("y", function(d,i) { return mini_yScale(d.country); })
.attr("height", mini_yScale.rangeBand())
.style("fill", "url(#gradient-rainbow-mini)");
//EXIT
mini_bar.exit()
.remove();
//Start the brush
gBrush.call(brush.event);
}//init
//Function runs on a brush move - to update the big bar chart
function update() {
/////////////////////////////////////////////////////////////
////////// Update the bars of the main bar chart ////////////
/////////////////////////////////////////////////////////////
//DATA JOIN
var bar = d3.select(".mainGroup").selectAll(".bar")
.data(data, function(d) { return d.key; });
//UPDATE
bar
.attr("x", 0)
.attr("width", function(d) { return main_xScale(d.value); })
.attr("y", function(d,i) { return main_yScale(d.country); })
.attr("height", main_yScale.rangeBand());
//ENTER
bar.enter().append("rect")
.attr("class", "bar")
.style("fill", "url(#gradient-rainbow-main)")
.attr("x", 0)
.attr("width", function(d) { return main_xScale(d.value); })
.attr("y", function(d,i) { return main_yScale(d.country); })
.attr("height", main_yScale.rangeBand());
//EXIT
bar.exit()
.remove();
}//update
/////////////////////////////////////////////////////////////
////////////////////// Brush functions //////////////////////
/////////////////////////////////////////////////////////////
//First function that runs on a brush move
function brushmove() {
var extent = brush.extent();
//Reset the part that is visible on the big chart
var originalRange = main_yZoom.range();
main_yZoom.domain( extent );
/////////////////////////////////////////////////////////////
///////////////////// Update the axis ///////////////////////
/////////////////////////////////////////////////////////////
//Update the domain of the x & y scale of the big bar chart
main_yScale.domain(data.map(function(d) { return d.country; }));
main_yScale.rangeBands( [ main_yZoom(originalRange[0]), main_yZoom(originalRange[1]) ], 0.4, 0);
//Update the y axis of the big chart
d3.select(".mainGroup")
.select(".y.axis")
.call(main_yAxis);
/////////////////////////////////////////////////////////////
/////////////// Update the mini bar fills ///////////////////
/////////////////////////////////////////////////////////////
//Update the colors within the mini bar chart
var selected = mini_yScale.domain()
.filter(function(d) { return (extent[0] - mini_yScale.rangeBand() + 1e-2 <= mini_yScale(d)) && (mini_yScale(d) <= extent[1] - 1e-2); });
//Update the colors of the mini chart - Make everything outside the brush grey
d3.select(".miniGroup").selectAll(".bar")
.style("fill", function(d, i) { return selected.indexOf(d.country) > -1 ? "url(#gradient-rainbow-mini)" : "#e0e0e0"; });
//Update the label size
d3.selectAll(".y.axis text")
.style("font-size", textScale(selected.length));
//Update the big bar chart
update();
}//brushmove
/////////////////////////////////////////////////////////////
////////////////////// Click functions //////////////////////
/////////////////////////////////////////////////////////////
//Based on http://bl.ocks.org/mbostock/6498000
//What to do when the user clicks on another location along the brushable bar chart
function brushcenter() {
var target = d3.event.target,
extent = brush.extent(),
size = extent[1] - extent[0],
range = mini_yScale.range(),
y0 = d3.min(range) + size / 2,
y1 = d3.max(range) + mini_yScale.rangeBand() - size / 2,
center = Math.max( y0, Math.min( y1, d3.mouse(target)[1] ) );
d3.event.stopPropagation();
gBrush
.call(brush.extent([center - size / 2, center + size / 2]))
.call(brush.event);
}//brushcenter
/////////////////////////////////////////////////////////////
///////////////////// Scroll functions //////////////////////
/////////////////////////////////////////////////////////////
function scroll() {
//Mouse scroll on the mini chart
var extent = brush.extent(),
size = extent[1] - extent[0],
range = mini_yScale.range(),
y0 = d3.min(range),
y1 = d3.max(range) + mini_yScale.rangeBand(),
dy = d3.event.deltaY,
topSection;
if ( extent[0] - dy < y0 ) { topSection = y0; }
else if ( extent[1] - dy > y1 ) { topSection = y1 - size; }
else { topSection = extent[0] - dy; }
//Make sure the page doesn't scroll as well
d3.event.stopPropagation();
d3.event.preventDefault();
gBrush
.call(brush.extent([ topSection, topSection + size ]))
.call(brush.event);
}//scroll
/////////////////////////////////////////////////////////////
///////////////////// Helper functions //////////////////////
/////////////////////////////////////////////////////////////
//Create a gradient
function createGradient(idName, endPerc) {
var coloursRainbow = ["#EFB605", "#E9A501", "#E48405", "#E34914", "#DE0D2B", "#CF003E", "#B90050", "#A30F65", "#8E297E", "#724097", "#4F54A8", "#296DA4", "#0C8B8C", "#0DA471", "#39B15E", "#7EB852"];
defs.append("linearGradient")
.attr("id", idName)
.attr("gradientUnits", "userSpaceOnUse")
.attr("x1", "0%").attr("y1", "0%")
.attr("x2", endPerc).attr("y2", "0%")
.selectAll("stop")
.data(coloursRainbow)
.enter().append("stop")
.attr("offset", function(d,i) { return i/(coloursRainbow.length-1); })
.attr("stop-color", function(d) { return d; });
}//createGradient
//Function to generate random strings of 5 letters - for the demo only
function makeWord(i) {
// var possible_UC = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
// var text = possible_UC.charAt(Math.floor(Math.random() * possible_UC.length));
//
// var possible_LC = "abcdefghijklmnopqrstuvwxyz";
//
// for( var i=0; i < 5; i++ )
// text += possible_LC.charAt(Math.floor(Math.random() * possible_LC.length));
names = ['Java', 'Python', 'HTML/HTML5', 'CSS/CSS3', 'JavaScript', 'TypeScript', 'SQL', 'BootStrap'];
return names[i];
}//makeWord
</script>
</body>
</html>