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<!DOCTYPE html>
<html>
<head>
<title>Title</title>
<meta charset="utf-8">
<link rel="stylesheet" href="styles.css" />
<script src="vendors/d3.js"></script>
<script src="vendors/lodash.js"></script>
<script src="vendors/jquery-2.1.4.js"></script>
<script src="vendors/remark-latest.min.js"></script>
<script src="scripts.js"></script>
</head>
<body>
<textarea id="source">
class: inverse, center, middle
# Intro a D3 para los más chambones
Miguel Trias `<[email protected]>`
---
class: inverse, center, middle
<img src="img/vividcortex-white.svg" />
<br>
<p>https://vividcortex.com/</p>
<p>SAAS for Database Performance Monitoring</p>
---
class: center, middle
# Faults Detection
<img src="img/vc-faults.png" style="width:65%"/>
---
class: center, middle
# Throughput
<img src="img/vc-bubbles.png" class="full-width" />
---
class: center, middle
# Top Queries
<img src="img/vc-queries.png" class="full-width" />
---
class: inverse, middle
# Agenda
1. SVG
1. d3
- Selections
- Data Joins
- Enter Update Exit
- Scales
- Axis
- Transitions
???
- Preguntas bienvenidas
- Nivel Basico (HTML, CSS, Javascript)
- Ingles
---
class: inverse, center, middle
# SVG
---
class: center, middle
# SVG
Scalable Vector Graphics
<blockquote>
Is an <strong>XML-based</strong> vector image format for <strong>two-dimensional graphics</strong> with support for <strong>interactivity and animation</strong>.
The SVG specification is an open standard developed by the World Wide Web Consortium (W3C) since 1999.
</blockquote>
<footer>
https://en.wikipedia.org/wiki/Scalable_Vector_Graphics
</footer>
---
# Se lleva bien con HTML
- Se puede embeber en HTML
- Misma sintaxis. (`<nodos con="atributos">`)
- API DOM
- eventos
- CSS
- No requiere plugins
???
Maneras de embeber: inline <svg>, <img>, <embed>
---
# `<rect>`
```html
<svg xmlns="http://www.w3.org/2000/svg" version="1.1" width="100%" height="200">
<rect
x="25"
y="25"
width="100"
height="100"
fill="indigo"
stroke="gray"
stroke-width="8"
/>
</svg>
```
<svg>
<rect
x="25"
y="25"
width="100"
height="100"
fill="indigo"
stroke="gray"
stroke-width="8"
/>
</svg>
<footer>
https://developer.mozilla.org/en/docs/Web/SVG/Namespaces_Crash_Course
</footer>
???
- contenido esta dentro de HTML
- `<svg>` es asumido en las proximas diapos
- xmlns & version (ver pie)
- version 2.0 en working draft
---
class: middle, center
# Buenas Practicas
<p>Atributos = Geometria</p>
<p>CSS = Estilos</p>
---
# `<rect>`
```html
<rect
x="25"
y="25"
width="100"
height="100"
/>
```
```css
rect {
fill: indigo;
stroke-width: 8;
stroke: gray;
}
```
<style>
rect#svg-r2 {
fill: indigo;
stroke-width: 8;
stroke: gray;
}
</style>
<svg>
<rect
id="svg-r2"
x="25"
y="25"
width="100"
height="100"
/>
</svg>
---
# Texto
```html
<text
x="20" y="60"
class="stroke-php js"
style="font-size: 70; stroke-width: 2"
>PHP Day 2015</text>
```
<svg heigth="200" width="200">
<text x="20" y="60" class="stroke-php js" style="font-size:70; stroke-width: 2" >PHP Day 2015</text>
</svg>
---
#`<circle><line><polyline>`
```html
<circle
cx="125" cy="125" r="67"
fill="orange"
/>
<line
x1="50" y1="50"
x2="150" y2="150"
stroke="blue" stroke-width="4"
/>
<polyline
points="4,100 4,150 150,150 150,50"
stroke="red" fill="none"
/>
```
<svg xmlns="http://www.w3.org/2000/svg" version="1.1" height="200">
<circle cx="75" cy="75" r="67" fill="orange" />
<polyline points="4,100 4,150 150,150 150,50" style="stroke:red" fill="none" />
<line x1="50" y1="50" x2="150" y2="150" style="stroke:blue" />
</svg>
---
# Sistema de Coordenadas
<svg height="880" style="position: absolute; left: 50px; top: 120px;">
<defs>
<marker id="markerArrow" markerWidth="9" markerHeight="9" refX="2" refY="4.5" orient="auto" markerUnits="strokeWidth">
<path d="M2,2 L2,7 L7,4.5 L2,2" stroke-width="0" stroke="none" />
</marker>
</defs>
<line x1="20" y1="20" x2="20" y2="400" style="marker-end: url(#markerArrow)" />
<line x1="20" y1="20" x2="600" y2="20" style="marker-end: url(#markerArrow)" />
</svg>
```html
<svg height="480">
<defs>
<marker id="markerArrow"
markerWidth="9" markerHeight="9" markerUnits="strokeWidth"
refX="2" refY="4.5"
orient="auto"
>
<path d="M2,2 L2,7 L7,4.5 L2,2" />
</marker>
</defs>
<line x1="20" y1="20" x2="600" y2="20" class="flecha" />
<line x1="20" y1="20" x2="20" y2="350" class="flecha" />
</svg>
```
```css
svg .flecha {
marker-end: url(#markerArrow);
}
```
---
# No hay z-index
```html
<circle cx="100" cy="150" r="95" fill="orange" />
<circle cx="200" cy="150" r="95" fill="indigo" />
<circle cx="600" cy="150" r="95" fill="indigo" />
<circle cx="500" cy="150" r="95" fill="orange" />
```
<svg height="300" width="250">
<circle cx="100" cy="150" r="95" fill="orange" />
<circle cx="200" cy="150" r="95" fill="indigo" />
<circle cx="600" cy="150" r="95" fill="indigo" />
<circle cx="500" cy="150" r="95" fill="orange" />
</svg>
---
# Ejemplo
```html
<circle cx="210" cy="210" r="210" class="no-stroke js" />
<circle cx="210" cy="210" r="50" class="no-stroke php" />
<circle cx="210" cy="210" r="10" class="no-stroke ruby" />
<rect x="440" y="155" width="25" height="25" class="no-stroke js" />
<rect x="440" y="185" width="25" height="25" class="no-stroke php" />
<rect x="440" y="215" width="25" height="25" class="no-stroke ruby" />
<text x="470" y="175">Javascript</text>
<text x="470" y="205">Php</text>
<text x="470" y="235">Ruby</text>
```
<svg height="600" width="600">
<circle cx="210" cy="210" r="210" class="no-stroke js" />
<circle cx="210" cy="210" r="50" class="no-stroke php" />
<circle cx="210" cy="210" r="10" class="no-stroke ruby" />
<rect x="440" y="155" width="25" height="25" class="no-stroke js" />
<rect x="440" y="185" width="25" height="25" class="no-stroke php" />
<rect x="440" y="215" width="25" height="25" class="no-stroke ruby" />
<text x="470" y="175">Javascript</text>
<text x="470" y="205">Php</text>
<text x="470" y="235">Ruby</text>
</svg>
???
PROBLEMAS
- Clases CSS repetidas
- Posicionamiento repetido
- Posicionamiento complicado
- Mantenimiento complicado
- Geometria repetida (cuadraditos iguales, cx y cy iguales)
---
# `<defs>`, `<use>`
```html
<defs>
<rect id="square" x="40" width="25" height="25" class="no-stroke" />
</defs>
<use xlink:href="#square" y="55" class="js" />
<use xlink:href="#square" y="85" class="php" />
<use xlink:href="#square" y="115" class="ruby" />
```
<svg height="200" width="600">
<defs>
<rect id="square" x="40" width="25" height="25" class="no-stroke" />
</defs>
<use xlink:href="#square" y="55" class="js" />
<use xlink:href="#square" y="85" class="php" />
<use xlink:href="#square" y="115" class="ruby" />
<text x="70" y="75">Javascript</text>
<text x="70" y="105">Php</text>
<text x="70" y="135">Ruby</text>
</svg>
???
- muestro solo lo que cambio
- no se ahorra mucho codigo porque la estructura es chica y simple (luego viene `<g>`)
- el objetivo es mejorar la performance
---
# Transformaciones
```html
<defs>
<rect id="rect" y="50" height="60" width="60" class="php" />
</defs>
<use x="0" xlink:href="#rect" />
<use x="100" transform="rotate(30, 130, 80)" xlink:href="#rect" />
<use x="200" transform="scale(2)" xlink:href="#rect" />
<use x="300" transform="skewX(10)" xlink:href="#rect" />
<use x="400" transform="translate(0,-15)" xlink:href="#rect" />
```
<svg height="250">
<defs>
<rect id="rect" y="50" height="60" width="60" class="php" />
</defs>
<use x="0" xlink:href="#rect" />
<use x="100" xlink:href="#rect" transform="rotate(30, 130, 80)" />
<use x="200" xlink:href="#rect" transform="scale(2)" />
<use x="300" xlink:href="#rect" transform="skewX(10)" />
<use x="400" xlink:href="#rect" transform="translate(0,-15)" />
</svg>
---
# `<G>`
- Agrupar objetos
- Transformaciones aplicadas, son heredadas por los hijos
- Conveniente para aplicar estilos
- Reciclar composiciones mediante `<use>`
---
# Un poco mejor
```html
<g transform="translate(210,210)" class="no-stroke">
<circle r="210" class="js" />
<circle r="50" class="php" />
<circle r="10" class="ruby" />
</g>
<g transform="translate(440)">
<g class="no-stroke">
<rect y="155" width="25" height="25" class="js" />
<rect y="185" width="25" height="25" class="php" />
<rect y="215" width="25" height="25" class="ruby" />
</g>
<g transform="translate(40)">
<text y="175">Javascript</text>
<text y="205">Php</text>
<text y="235">Ruby</text>
</g>
</g>
```
<!--svg height="450" width="400"></svg-->
???
- estructura conveniente con `<g>`
- cx y cy omitidos xq default=0
- segundo "transform" es relativo al primero
- class puestos al `<g>`
---
# `<path>`
```html
<path d="
M10,100
L10,10
A10,10 0 0,1 10,60
M50,100
V10
M80,100
V10
M50,60
H80
M100,100
v-90
A10,10 0 0,1 100,60
">
```
<svg xmlns="http://www.w3.org/2000/svg" version="1.1" height="120">
<path d="M10,100
L10,10
A10,10 0 0,1 10,60
M50,100
V10
M80,100
V10
M50,60
H80
M100,100
v-90
A10,10 0 0,1 100,60
"
stroke-width="10"
class="no-fill stroke-php"
>
</svg>
???
- El elemento mas versatil y avanzado, pero tambien el mas dificil de usar
- M = move
- L = line
- A = arc
- H = horizontal
- V = Vertical
- minuscula = coordenadas relativas
- mayuscula = coordenadas absolutas
---
# `<path>`
```html
<path d="M80,80 L290,290" />
<path d="M80,80 A1,1 0 1,1 290,290" />
<path d="M80,80 Q290,0 290,290" />
```
<svg xmlns="http://www.w3.org/2000/svg" version="1.1" height="300" width="300">
<g class="no-fill">
<path d="M80,80 L290,290" class="stroke-php" />
<path d="M80,80 A1,1 0 1,1 290,290" class="stroke-js" />
<path d="M80,80 Q290,0 290,290" class="stroke-ruby" />
</g>
</svg>
---
class: inverse, center, middle
<img src="img/hate.png" style="width:60%" />
---
class: inverse, center, middle
# Más SVG
```
http://tutorials.jenkov.com/svg/index.html
https://svgontheweb.com/
```
---
class: inverse, center, middle
# D3
---
class: center, middle
# D3
Data Driven Documents
<blockquote>
D3.js is a JavaScript library for manipulating documents based on data.
</blockquote>
<footer>
http://d3js.org/
</footer>
???
Data-driven: linkear datos a nodos del DOM y luego aplicar transformaciones basadas en esos datos
---
# D3
- las librerias "standard" de graficos no siempre tienen la que necesitamos
- quizas queremos inventar una
- o queremos que interactuen entre si
- afinar detalladamente el comportamiento o diseño de los elementos
- procesar los datos en el mismo lugar
- ejecutar algoritmos caros (layouts, scaling, zooming, paning, brushing, animaciones, deteccion de colisiones, mapas, geoJSON, simulaciones fisicas (gravedad, cargas, etc) )
<footer>
http://d3js.org/#introduction
</footer>
???
- Por qué lo necesitamos?
- control vs facilidad de implementacion
---
# Ejemplos
- [Voronoi Tesselations](http://bl.ocks.org/mbostock/4060366)
- [Fish Eye](http://bost.ocks.org/mike/fisheye/)
- [Mobile Patents](http://bl.ocks.org/mbostock/1153292)
- [Zoomable Treemaps](http://bost.ocks.org/mike/treemap/)
- [Faux 3D Arcs](http://bl.ocks.org/dwtkns/4973620)
- [Collision Detection](http://bl.ocks.org/mbostock/3231298)
- [Scatterplot Matrix](http://bl.ocks.org/mbostock/4063663)
- [Epicyclic Gearing](http://bl.ocks.org/mbostock/1353700)
- [Obama Budget](http://www.nytimes.com/interactive/2012/02/13/us/politics/2013-budget-proposal-graphic.html?_r=0)
- [Taxes](http://www.nytimes.com/interactive/2013/05/25/sunday-review/corporate-taxes.html)
- [Stop and Frisk](http://www.nytimes.com/interactive/2014/09/19/nyregion/stop-and-frisk-map.html)
---
viz: vizSelections1
# Selections > `select`
```html
<svg>
<rect id="rect" x="100" y="50" height="60" width="60" />
</svg>
```
```javascript
d3.select('#rect').style("fill", "green");
// equivalente a
document.getElementById('rect').style.setProperty("fill", "green");
```
<div id="vizSelections1" class="viz-container">
<svg>
<rect id="d3_selections_rect" x="100" y="50" height="60" width="60" />
</svg>
</div>
---
viz: vizSelections2
# Selections > `selectAll`
```html
<svg>
<rect x="100" y="50" height="60" width="60" />
<rect x="200" y="50" height="60" width="60" />
</svg>
```
```javascript
d3.selectAll('rect').style("fill", "green");
// equivalente a
document.getElementsByTagName('rect').forEach(function(rect)
{
rect.style.setProperty("fill", "green");
});
```
<div id="vizSelections2" class="viz-container">
<svg>
<rect x="100" y="50" height="60" width="60" />
<rect x="200" y="50" height="60" width="60" />
</svg>
</div>
???
- evitamos loops
---
viz: vizSelections3
# Selections > `selectAll`
```html
<svg>
<rect x="100" y="50" height="60" width="60" />
<rect x="200" y="50" height="60" width="60" />
</svg>
```
```javascript
d3.selectAll('rect')
.attr("height", "150")
.attr("width", "100")
.style("fill", "gray")
.style("stroke", "indigo");
```
<div id="vizSelections3" onclick="viz(this)" class="viz-container">
<svg height="250">
<rect x="100" y="50" height="60" width="60" />
<rect x="250" y="50" height="60" width="60" />
</svg>
</div>
???
- interfaz fluida ( method chaining )
- codigo conciso y declarativo
- usamos la misma seleccion varias veces
- hasta ahora es lo mismo q jQuery
---
viz: vizSelections4
# Selections
```html
<svg>
<rect x="100" height="60" width="60" />
<rect x="200" height="60" width="60" />
</svg>
```
```javascript
d3.selectAll('rect')
.attr("height", "150")
.attr("width", function () {
return 100;
})
.style("fill", function (d, i) {
return ["gray", "orange"][i];
});
```
<div id="vizSelections4" onclick="viz(this)" class="viz-container">
<svg>
<rect x="100" height="60" width="60" />
<rect x="250" height="60" width="60" />
</svg>
</div>
???
- Callbacks to define properties
- index in second position
---
viz: vizSelectionsPractice
# Ejemplo
```javascript
d3.selectAll('circle')
.attr("r", function ()
{
return Math.random() * 200;
})
.attr("class", function (d, i)
{
return ['php', 'js', 'ruby'][i];
});
```
<div id="vizSelectionsPractice" class="viz-container">
<svg height="280">
<g transform="translate(210,140)" class="no-stroke">
<circle r="210" class="js transparent" />
<circle r="50" class="php transparent" />
<circle r="10" class="ruby transparent" />
</g>
<g transform="translate(440)">
<g class="no-stroke">
<rect y="100" width="25" height="25" class="js" />
<rect y="130" width="25" height="25" class="php" />
<rect y="160" width="25" height="25" class="ruby" />
</g>
<g transform="translate(40)">
<text y="120">Javascript</text>
<text y="150">Php</text>
<text y="180">Ruby</text>
</g>
</g>
</svg>
</div>
???
Notar:
- Markup igual al ejemplo anterior
- solo eliminamos los atributos de los `<circle>`
- transparent (para no enfrentarme al z-index)
- estamos sobreescribiendo el "class" cada vez
---
# Visualización
> Es un mapeo de datos a gráficos
1. datum -> objeto
2. cantidades -> propiedades
???
- 1: incluyendo los cambios: enter/update/exit
- 2: formas, colores, dimensiones, posiciones, transiciones
---
# Data Joins
```javascript
var data = [200, 100, 15];
```
```javascript
d3.selectAll('circle')
.attr("r", function (d, i)
{
return data[i];
});
```
???
- mal hecho, solo para ilustrar la necesidad
- aun no llamamos a data()
---
viz: vizDataJoin1
# Data Joins
```html
<circle /><circle /><circle />
```
```javascript
var data = [200, 100, 15];
```
```javascript
d3.selectAll('circle')
.data(data)
.attr("r", function (d, i)
{
return d;
})
```
<div id="vizDataJoin1" class="viz-container">
<svg height="400">
<g transform="translate(210,210)" class="no-stroke">
<circle />
<circle />
<circle />
</g>
</svg>
</div>
???
- ahora si ta bien
- callbacks reciben el datum y el indice
- pero seguimos creando el markup a mano!!
---
viz: vizDataJoin2
# Ejemplo
```javascript
var data = [
{lang: 'js', popularity: 200},
{lang: 'php', popularity: 100},
{lang: 'ruby', popularity: 15},
];
```
```javascript
d3.selectAll('circle')
.data(data)
.attr("r", function (d, i)
{
return d.popularity;
})
.attr("class", function (d, i)
{
return d.lang;
});
```
???
- estructura de datos del mundo real
<!--div id="vizDataJoin2" class="viz-container">
<svg height="400">
<g transform="translate(210,210)" class="no-stroke"></g>
</svg>
</div-->
---
class: center
# Enter-Update-Exit
<img src="img/mindblown.gif" />
---
viz: vizEUE1
# Enter
```html
<svg></svg>
```
```javascript
d3.selectAll("circle")
.data(data)
.enter().append("circle")
.attr("r", function (d)
{
return d.popularity;
});
```
<div id="vizEUE1" class="viz-container">
<svg height="400">
<g transform="translate(210,210)" class="no-stroke"></g>
</svg>
</div>
???
- ya no creamos los elementos
- selectAll en elementos que sabemos que no existen.
- no le decimos como crear circulos, sino que queremos
- queremos un circulo por cada datum
- append y selection no siempre tienen lo mismo
---
class: center
# Enter-Update-Exit
<svg height="400">
<g transform="translate(0,220)">
<g transform="translate(280)">
<circle r="150" class="php transparent" />
<text y="-180" dy=".35em" text-anchor="middle" style="font-weight: bold; font-variant: small-caps;">data</text>