The reading this week is brief, providing a quick overview of five of the most influential visualizations of all time. For this week's discussion, select one of the visualizations mentioned in the reading and take a deeper dive. Perform an internet search to find resources that discuss the visualization in greater depth. Summarize your findings here, and provide links to the resources you used to produce your summary.
If you have additional reflections/questions you would like to share on the reading that are beyond the scope of what you were asked to provide above, feel free to post those as well.
The 5 Most Influential Vizzes of All Time
2The 5 Most Influential Vizzes of All Time
About these visualizations Data helps find opportunities and resolve misunderstandings. These five visualizations are
evidence of that. They influenced people’s thoughts and actions at critical points in history—
making an impact on the world around us.
We can learn a lot about the future of data visualization by looking at the past. These visualizations
are still relevant today and continue to teach us about the power of data storytelling.
Contents 5. London Cholera Map – John Snow………………………………………………………………………3
4. Gapminder – Hans Rosling ……………………………………………………………………………………..4
3. March on Moscow – Charles Minard …………………………………………………………………..5
2. War Mortality – Florence Nightingale ………………………………………………………………..6
1. Chart of Biography – Joseph Priestley ……………………………………………………………… 7
About Tableau …………………………………………………………………………………………………………………..9
Additional Resources ……………………………………………………………………………………………………..9
3The 5 Most Influential Vizzes of All Time
5. London Cholera Map – John Snow
1854. London. Cholera strikes. In just 10 days, over 500 people have died in one neighborhood.
The mysterious cluster of deaths is especially terrifying because no one understands the source.
No one besides John Snow, an epidemiologist who believed that the water supply was spreading
the disease.
He plotted every death on a map with ingenious mapped bar charts (see left) and was able to show
that the closer to the Broad Street water pump he plotted, the greater the number of deaths.
This was positive proof that cholera was caused by contaminated water. Determining the source
helped end the epidemic and save millions of lives.
4The 5 Most Influential Vizzes of All Time
4. Gapminder – Hans Rosling
The Swedish scientist Hans Rosling had been working with developmental data for over 30 years—
but it took a great visualization and a 2007 TED talk for him to share his passion with the world.
His original viz (now one of many) shows the relationship between income and life expectancy
in 200 countries over 200 years, in just four minutes. The data is simple but Rosling’s visual
storytelling transformed how people approach data presentation.
5The 5 Most Influential Vizzes of All Time
3. March on Moscow – Charles Minard
In 1812, Napoleon marched to Moscow to conquer the city. 98% of his soldiers died. Fifty years
later, while his country yearned for their former Imperial glory, the Parisian engineer Charles
Minard chose to remind his country of the horrors of war with data. The simple but fascinating
temperature line below the visualization shows how cold ultimately defeated Napoleon’s army.
This viz still inspires those who see it to ponder the true cost of war.
6The 5 Most Influential Vizzes of All Time
2. War Mortality – Florence Nightingale
1855. The Crimea. Britain is fighting a battle with both Russia and disease. As a nurse, how do you
convince an army to invest in hospitals and healthcare instead of guns and ammunition?
Florence Nightingale told her story with data by showing the staggering amount of deaths due to
preventable disease (shown in blue/grey). This visualization helped convince the British army to make
sanitation a priority, saving lives in the process.
7The 5 Most Influential Vizzes of All Time
1. Chart of Biography – Joseph Priestley
The 18th century English educator and polymath Joseph Priestley had an ambitious goal: to teach
his students the relationship between the nations of the past and the people that defined them.
His creation ended up becoming two separate, but related views.
These bars on these timeline charts showed the lifespan of 2,000 famous people from 1200 BCE to 1800 AD.
Using the same X-axis as the biography chart, this visualization shows the history of the major civilizations of the world over the same time period.
8The 5 Most Influential Vizzes of All Time
Together, they weave an intricate story. They explain and document both the rise and fall of
empires, and the unique thinkers that defined those nations. Notice, as an example, the clusters
of biographies and how they correlate to the major moments in human history—the Greeks, the
Romans, the Enlightenment, etc.
The greatest value of a picture is when it forces
us to notice what we never expected to see.
JOHN TUKEY, 1977
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