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1. circles.enter().append("circle").attr("class", "update")

2. there's no update method, just set attributes or append

2.1. circles.attr("class", "update")

3. set attributes by data

3.1. circles = svg.selectAll("circle").data(data)

4. circles.attr("r", function(d) { return d.radius; });

5. data joins

5.1. marrying data to the DOM

5.1.1. *read*

5.1.1.1. http:/bost.ocks.org/mike/join/

5.2. mapping by

5.2.1. enter

5.2.1.1. exists in data but not in DOM

5.2.1.2. need use enter().append()

5.2.2. update

5.2.2.1. exists in both

5.2.3. enter+update

5.2.4. exit

5.3. you have a method (eg, renderData) that does these 4 steps

6. exists in DOM but not in data

7. load & manipulate data in different formats

7.1. asdasd

8. multi-dimensional

9. hello

10. world

11. jsnkjdcnsdc

12. asdasda

13. dasdasd

14. asdadasd

14.1. jkfnvjnvdfv

14.1.1. njnkjnkn

14.1.1.1. kjnjn

14.1.1.1.1. kjnkjn

15. dasdasd

16. hghhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhgggggggggh

17. 1. visualization

18. animations

18.1. e.g.

19. because you declare the join & handling of adding/removing data, you can easily add animations

20. you describe DOM elements that d3 will create according to the data

21. visualisations can increase or decrease the value extracted from data

22. enter

22.1. fade in

23. the 1st that's really a *visualisation* framework

24. drawing

24.1. RaphaëlJS

24.2. processing

24.2.1. drawing code

24.2.2. a JS version supports running in browser

24.3. flash

25. no loop over data

25.1. rather

25.1.1. declarative mapping of DOM elements to data

26. svg.selectAll("circle").data(data).enter().append("circle").attr("r", 2.5);

27. a

27.1. a

28. definition

28.1. vis tells a story made of data

28.2. conveys a value contained in the data

29. test

29.1. d3

29.1.1. does a lot for you

29.1.1.1. map data unto the DOM

29.1.1.2. interpolation

29.1.1.2.1. map properties unto scales of

29.1.1.3. scales

29.1.1.3.1. linear

29.1.1.3.2. nice

29.1.1.4. colorspace math

29.1.1.4.1. natural = d3.extend(data);

29.1.1.4.2. colorscale = d3.scale.linear().domain(natural).intpolate(d3.interpoleateLab).range(startColor, endColor);

29.1.2. example

29.1.2.1. http://bl.ocks.org/3808218

29.1.3. outputs SVG

29.1.3.1. מה לעשות,ינינחינ

29.1.3.2. works with high-res (retina) DPI

29.1.3.3. use as image in HTML & CSS

29.1.3.4. manipulate style via CSS

29.1.3.5. selectors in JavaScript, e.g., by class

29.1.3.5.1. getElementByClassName

29.1.3.6. d3 selectors are almost the same as jquery's

29.1.3.6.1. d3.selectAll(...)

29.1.4. attributes aren't exactly the same as HTML

29.1.5. mostly, it just works

29.1.6. it's just javascript

29.1.7. you can use the browser debugger

29.2. 123

30. go make something!

31. Ho!

31.1. EE

31.2. ee