# 5.Creating good data visualization

Good data visualization should both engage the audience and improve both the accuracy and the depth of their understanding.



![Great Data Visualization](https://lh4.googleusercontent.com/PCHd39Lf51rZ17w2dZWQ1gPK4kKt_S1JDnHTHj-VeCqarrG5L2nfufqeIV5EYNe04zY-7d3hWUt6QWVp2vvTDDgGaaRfSEXzG_b9xHwBzRUA30Jlu5FkM1gfbnRcChsxb0sAU6E)

**For data visualization to achieve that, it needs three things:**

* data analysis
* storytelling
* design

**Data Analysis**\
Data is just numbers but  with analysis, data becomes a place to discover surprising and important stories. Most data visualizations rely on analysis to find two things: patterns and relationships.

**Patterns**\
Good data analysis splices the data many ways, looking for patterns that emerge over time, across space or between categories.  Exploring the data in this way allows significant patterns to emerge – these patterns tell a story about how the world works or is changing.

**Two strong examples**\
\
[http://www.poppyfield.org/](http://www.poppyfield.org/): POPPY DIAGRAM

The Great War, also known as the First World War or WWI, was a global war centered in Europe.Beginning 28 July 1914 and ending 11 November 1918, it claimed more than 10.5 million battle deaths.\


![](https://lh5.googleusercontent.com/71FBnF8_scMgum9myQatdT9IL-063eMCW0qflopAEI10zkuQxfE6BLw8DWxcK9eLEBcVuu97OaeeXQsacQi2LDRbblDNIY1iG16mjXdbu0IqYrkR6BA6ILwah9wqAI07Dn-xPz0)

Following the end of the First World War, the poppy became a symbol of commemoration. It was among the first plants to spring to life on Europe's devastated battlefields. Its colour, reminiscent of bloodshed, and its resilient yet delicate nature evoke the human relationship to war. The First World War was initially dubbed the war to end all wars. Sadly, the world has witnessed more than 200 conflicts in the 100 years since.Poppy Field reflects on the human cost of war from the beginning of the 20th Century.\


**Relationships**\
The number of infected people, measured over 70-some years and across all 50 states and the District of Columbia, generally declined after vaccines were introduced. The heat maps below show number of cases per 100,000 people.\
See all here: [http://graphics.wsj.com/infectious-diseases-and-vaccines/](http://graphics.wsj.com/infectious-diseases-and-vaccines/)

![](https://lh4.googleusercontent.com/LQ3O4E-pDSApW8b6zW_F2KXsGMQIB-QcYbRCRinP8efk7rR7LmZ68d1V2BORPOJYXMzVs-harieV28pmPVzEPCtkJg4kyiJR9kI7Zdf6n7TSqQrpuhyxMwzMdX9l8jUDwcKkq0w)
