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SVG + D3.JS Course Slide
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tkirby
May 28, 2015
Education
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SVG + D3.JS Course Slide
tkirby
May 28, 2015
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Transcript
Visualization over Web
HTML <a href=“link”>content</a> <img src=“blah.png”> <br> <a href=“link”> this link
</a> links to a page <br> <p><a href=“link”> this link </a> links to a page </p>
block / inline-block table / list / flex … static
/ relative absolute / fixed … Display Mode Position Method
None
Scalable Vector Graphics SVG
<p> <svg> … </svg> </p>
<svg> <rect x=“10” y=“10” width=“20” height=“20”> </svg>
<circle> <ellipse> <line> <path> <text> hello world!
<circle cx=“10” cy=“10” r=“10” >
<ellipse cx=“10” cy=“10” rx=“20” ry=“10” >
<line x1=“10” y1=“10” x2=“20” y2=“20” >
<circle cx=“10” cy=“10” r=“10” stroke=“color” fill=“color” stroke-width=“size” >
None
#abcdef RG B 0 ~ 255 = 0 ~ ff
#adf = #aaddff
#abcdef RG B rgb(255,128,64) rgba(255,128,64,0.8)
<circle cx=“10” cy=“10” r=“10” stroke=“black” fill=“#8fc” stroke-width=“5” >
Exercise 1
?
None
None
<path d=“....”> M (x,y)+ - Move to (+ lineto) Z
- Close Path L (x,y)+ - Line to C (x1,y1,x2,y2,x,y)- Curve to ctrl1 ctrl2 M1,1 L2,1 L 2,2 L1,2Z
<path d=“....”> M1,1 L2,1 L 2,2 L1,2Z (1,1) (2,1) (2,2)
(1,2) M L L L Z
<path d=“....”> M (x,y)+ - Move to (+ lineto) C
(x1,y1,x2,y2,x,y)- Curve to ctrl1 ctrl2
None
<path d=“....”> Q (x1,y1,x,y)+ - Quadratic Bezier T (x,y)+ -
Quadratic Bezier
<path d=“....”> A (rx,ry,a,b,c,x,y)+ - Quadratic Bezier
<path d=“....”> m (x,y)+ - Move to (+ lineto) z
- Close Path l (x,y)+ - Line to c (x1,y1,x2,y2,x,y)+ - Curve to ctrl1 ctrl2 q (x1,y1,x,y)+ - Quadratic Bezier a (rx,ry,a,b,c,x,y)+ - Quadratic Bezier
M75,50.5l5-1.5c-0.1-2.2-0.4-4.3-0.9-6.3l-5.2-0.1c-0.2-0.6-0.4-1.1-0. 6-1.7l4-3.3c-0.9-1.9-2-3.8-3.2-5.5L69.2,34c-0.4-0.5-0.8-0.9-1.2-1.3l 2.4-4.6c-1.6-1.4-3.3-2.7-5.1-3.8l-3.7,3.6c-0.5-0.3-1.1-0.5-1.6-0.8l0.5 -5.2c-2-0.7-4-1.3-6.2-1.6l-2.1,4.8c-0.6-0.1-1.2-0.1-1.8-0.1l-1.5-5c-2. 2,0.1-4.3,0.4-6.3,0.9l-0.1,5.2c-0.6,0.2-1.1,0.4-1.7,0.6l-3.3-4c-1.9,0.9 -3.8,2-5.5,3.2l1.9,4.9c-0.5,0.4-0.9,0.8-1.3,1.2l-4.6-2.4c-1.4,1.6-2.7,3 .3-3.8,5.1l3.6,3.7c-0.3,0.5-0.5,1.1-0.8,1.6l-5.2-0.5c-0.7,2-1.3,4-1.6,6 .2l4.8,2.1c-0.1,0.6-0.1,1.2-0.1,1.8l-5,1.5c0.1,2.2,0.4,4.3,0.9,6.3l5.2, 0.1c0.2,0.6,0.4,1.1,0.6,1.7l-4,3.3c0.9,1.9,2,3.8,3.2,5.5l4.9-1.9c0.4,0. 5,0.8,0.9,1.2,1.3l-2.4,4.6c1.6,1.4,3.3,2.7,5.1,3.8l3.7-3.6c0.5,0.3,1.1,
0.5,1.6,0.8l-0.5,5.2c2,0.7,4,1.3,6.2,1.6l2.1-4.8c0.6,0.1,1.2,0.1,1.8,0. 1l1.5,5c2.2-0.1,4.3-0.4,6.3-0.9l0.1-5.2c0.6-0.2,1.1-0.4,1.7-0.6l3.3,4c 1.9-0.9,3.8-2,5.5-3.2L66,69.2c0.5-0.4,0.9-0.8,1.3-1.2l4.6,2.4c1.4-1.6 ,2.7-3.3,3.8-5.1l-3.6-3.7c0.3-0.5,0.5-1.1,0.8-1.6l5.2,0.5c0.7-2,1.3-4, 1.6-6.2l-4.8-2.1C74.9,51.7,75,51.1,75,50.5zM50,65c-8.3,0-15-6.7-1 5-15c0-8.3,6.7-15,15-15s15,6.7,15,15 C65,58.3,58.3,65,50,65z d=“ ”
http://goo.gl/fPUFgv SVG Editor
Exercise 2
<path d=“……” fill=“…” stroke=“…” stroke-width=“size” stroke-dasharray=“…” stroke-dashoffset=“…” transform=“ translate(x y)
rotate(r x y) scale(x y) ” >
None
transform=“ translate(x,y) “
transform=“ rotate(r,x,y) “
transform=“ scale(x,y) “
<text x=“0” dx=“0” y=“0” dy=“0” text-anchor=“middle" dominant-baseline="central" textLength=“100" rotate=“ 30
60 90 120 150 180 210 240 270 300 330 360”> helloworld! </text>
Hello World! Hello World! Hello World! start middle end Hello
World! dominant-baseline text-anchor central
rotate=“ 30 60 90 120 150 180 210 240 270
300 330 360”
SMIL <path d=“……”> <animate/> <animateTransform/> <animateMotion/> Animation in SVG (IE
not support)
<animate/> 屬性變化 <animateTransform/> 線性轉換變化 <animateMotion/> 路徑
<animate attributeName=“r” dur=“1s” repeatCount=“indefinite” from=“…” to=“…” begin=“…” end=“…” values=“…” keyTimes=“…”
keySplines=“…” calcMode=“…”/> discrete,paced,linear,spline
<animateTransform attributeName=“transform” type=“…”/> <animateMotion> <mpath xlink:href=“…”/> </animateMotion>
<ellipse rx=“1” ry=“8”> <animate attributeName=“rx” from=“1” to=“10” dur=“1s” repeatCount=“indefinite”/>
<animateTransform attributeName=“transform” type=“rotate” from=“0” to=“180” dur=“0.5s” repeatCount=“indefinite”/> </ellipse>
Coordinate <svg width=“200px” height=“200px” viewBox=“0 0 100 100” preserveAspectRatio=“…”> ……
</svg> preserveAspectRatio=“None” or x{Min,Mid,Max}Y{Min,Mid,Max}
width height (x1,y1) (x2,y2) <svg width=“w” height=“h” viewBox=“x1 y1 x2
y1”>
None
preserveAspectRatio xMin xMid xMax yMin yMid yMax
D3JS js library for manipulating documents based on data <script
type=“text/javascript” src=“d3.min.js”></script> <script type=“text/javascript”> d3.json(“data.json”, function(data) { min = d3.min(data); }); </script>
Data Driven Document Model Powerful Visualizing Lib d3js d3js d3js
d3js d3js d3js d3js d3js d3js d3js
data data data data data selection enter exit selection
data data data data selection enter exit selection d3.selectAll(“div”) .data(data)
.enter().append(“div”) .exit().remove() d3.selectAll(“div”)
new data data new data.onChange enter exit selection
Topic 1 - Selections
d3.select(“body”) .attr(“class”, “root”) d3.select(“body”) .style({ background: “#999”, color: “#009” })
d3.select(“body”) .text(“123”); d3.select(“body”) .html(“123”);
d3.select(“body”).selectAll(“div”) .style({ background: “#999”, color: “#009” }) d3.select(“body”).selectAll(“div”) .style({ background:
function() { return “#f00” }, color: “#009” })
d3.select(“body”).selectAll(“div”) .style({ background: function(d,i) { return "rgba("+(i*85)+",128,192,1)"; }, color: “#009”
})
d3.select(“body”).selectAll(“div”) .data([“#f00”,”#f90”,”#ff0”]) .style({ background: function(d,i){ return d; }, color: “#009”
})
v = d3.select(“body”).selectAll(“div”) .data([“#f00”,”#f90”,”#ff0”]) v.exit().remove(); v.enter().append(“div”); d3.select(“body”).selectAll(“div”) .style({ background: function(d,i){
return d; }, color: “#009” }) .text(function(d) { return d; });
Topic 2 - Utilities
Utility functions d3.json(path, callback) d3.csv(path, accessor, callback) d3.html(path, callback) d3.text(path,
type, callback) d3.xhr() …
Utility functions d3.min(array) d3.max(array) d3.sum(array) d3.mean(array) d3.median(array) d3.random.normal d3.set set.has
set.forEach d3.map map.has map.forEach d3.transition d3.svg
Scale functions d3.scale.linear().domain(array).range(array) radius = d3.scale.linear() .domain([d3.min(data), d3.max(data)]) .range([“#f00”,”#00f”]) ticks
= radius.ticks(20); d3.scale.pow().exponent(3).domain(array).range(array) d3.scale.log().domain(array).range(array)
Scale functions d3.scale.linear() .domain([0,100]) .range([“#000”,”#f00”]) d3.scale.category10() d3.scale.category20() d3.scale.category20b() d3.scale.category20c()
Topic 3 - Layout
Pack Layout
Pack Layout nodes = d3.layout.pack().size([w,h]) .nodes(data) structure of data: {
value: ?, children: [ ] } { value: ?, children: [ ], parent, depth, x, y, r }
{ parent: null, children: [ {value: 3}, {value: 1}, {value:
4}, {value: 1}, {value: 5}, ………… ] } c = data.map( function(d) { return {value: d}; } ); root = { children: c }
{ parent: null, children: [ {value: 3}, {value: 1}, {value:
4}, {value: 1}, {value: 5}, ………… ] } [ {value:0,depth: 0, x:…, y:…, r:…}, {value:3,depth: 1, x:…, y:…, r:…}, {value:1,depth: 1, x:…, y:…, r:…}, {value:4,depth: 1, x:…, y:…, r:…}, …… ]
Pack Layout d3.layout.pack() .sort(function(a,b) {…}) .padding(5) .size([w,h]) .nodes(data) d3.layout.pack().links(nodes) {
source: <node>, target: <node> }
Partition Layout d3.layout.partition() .sort(function(a,b) {…}) .size([w,h]) .nodes(data) d3.layout.partition().links(data) { value:
?, children: [], parent, depth, x, y, r, dx, dy }
arc = d3.svg.arc() .startAngle(function(d) { return d.x; }).endAngle(function(d) { return
d.x + d.dx; }).innerRadius(function(d) { return Math.sqrt(d.y); }).outerRadius(function(d) { return Math.sqrt(d.y + d.dy); }); Use d3.svg.arc * also check the pie layout
Force Layout d3.layout.force() .size() .gravity() .charge() .friction() .nodes() .start() d3.on(“tick”,
callback) [{…},{…},…] [ {…, x:…, y:…}, {…, x:…, y:…}, {…, x:…, y:…}, … ]
data = [1,2,3,4].map(function(d) { return {v:d}; }); force = d3.layout.force().nodes(data);
force.on(“tick”, function() { d3.selectAll(“…”).attr({ x: function(d) { return d.x; }, y: function(d) { return d.y; }, … }); force.start();
Cluster Layout d3.layout.cluster() .sort(function(a,b) {…}) .size([w,h]) .nodes(data) d3.layout.cluster().links(data) { value:
?, children: [], parent, depth, x, y }