Charting & Data Visualization in Ext JS 4

•

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Ext JS provides libraries for charting and visualization including Raphaël, CSS3 Pie, and InfoVis. It includes engines for SVG, VML, and Canvas rendering. The Surface class renders primitives, text, images, and gradients. Sprites are drawing elements that normalize differences between engines and support attributes, events, transforms, and animation. DrawComponents extend Ext components to provide customizable engine preferences and participate in layouts. Charts include series, axes, legends, and callouts. Supported chart types include pie, bar, column, line, area, and scatter plots. Charts support gradients, labels, tooltips, highlighting, stacking, and custom renderers.

Technologie Business

Dmitry
Baranovskiy
- Raphaël -
Jason Johnston
- CSS3 Pie -

Nicolas
Belmonte
- InfoVis -

Ext Draw
Working with Vector Graphics

Surface

SVG Engine VML Engine Canvas Engine

Sprite

Ext.draw.Surface
Rendering of primitives: Ellipses, Rectangles, Complex Paths
Text
Images
Gradients

Ext.draw.Sprite
Abstracted drawing elements
Normalizes di erences between engine API syntax
Attributes
Event support (extends Observable)
Transforms (Rotate, Translate, Scale)
Animation supported through Ext.fx
SpriteComposites

Ext.draw.DrawComponent
Extends Ext.Component
Engine preference via feature detection
Customizable engine preference order
Layout participation

HTML5
Standards
Based

Resolution Independence

Working with Charts
DrawComponent

Chart

Store Axis Series Legend Callout

Pie Bar/Column Line/Area Scatter

Series Properties
Label conﬁguration
Animation e ects
Shadow e ects
Highlighting e ects
Gradients
Legends
Callouts
Renderers

Label Options
Full Font styling
Orientation
Rotation
Positioning
Renderers

Legends
Positioning: top, bottom, left, right, ﬂoating
Vertical/Horizontal stacking
Styling using same Label API

Callouts
Tooltips on steroids
Series/Chart highlighting
Axis selection - pan/zoom

Gradients
Shared across all series
Accessed by reference id
Multiple color support
Linear gradients
Multiple opacity stop support
Radial gradients

Pie Properties
angleField
lengthField
Stacking
Pie or Donuts?

Series Renderers
Similar concept to Grid Renderers
Customize any property
Return new set of properties
Available to all series

Cartesian Charts
Axis support
Bar/Column, Line/Area, Scatter Point
Mix and Match

Axes
Numeric, Category and Time
Align to top, bottom, left, right
Bind each axis to di erent data sets
Ellipsis support
Gridline support
Full label conﬁguration support

Column/Bar Properties
Assign an array of ﬁelds to add grouping
Stack ﬂag to change to stacking

Line Charts
Markers
Smoothing
Fills
Stacking for area charts

Beyond Charting
Full Graphical Dashboards
Graphic Display Gauges
Heatmaps
Organizational Charts
Network Diagrams
Interactive Maps and Location Components
Venn Diagrams

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