Data Visualization

Cairo's principles

This graphing is designed following Cairo's principles of beauty, truthfulness, functionality, and insightfulness.

The visual is truthful: the plot is honest to the audience, the best understanding of the reality is showed, self-deception such as dual-axis or hiding data are avoided.

The visual is functional: The plot is easy to read and focus on delivering the key information. A trend and differences of the temperature are clearly showed along with break points, so that the audience do not need to read all the numbers to understand it.

The visual is insightful: The plot has no redundant decoration or scales so to guide the audience to quickly shape the key information.

Lastly, the visual is beautiful: High temperature is shown in the color of sun, break high is in deeper red, low temp is in the color of ice, break low is in deeper blue, and the gap is filled using the color of lime, because the color is light and distinguishes from both red and blue (and also because every day of life is just like a cup of lime juice).

Custom Visualization

This graphing is a practice of the third task, "compare to constant", from Ferreira, N., Fisher, D., & Konig, A. C. (2014, April). Sample-oriented task-driven visualizations: allowing users to make better, more confident decisions.

The bar colors reflect the bar’s position with respect to the interest y-axis value: a gradient ranging from dark blue for the distribution being certainly below this y-value, to light yellow if the value is certainly contained, to dark red if the value is certainly not contained as the distribution is above the axis.

The Material Design color system:

Seeing American Economics

From High-Rise Buildings

This visualization was concerned with answering the question of how the number of newly built high-rise buildings (of at least 115 feet) in four big cities in the United States (Chicago, Detroit, Los Angeles, New York) have changed over the last century. Wikipedia was scraped for data concerning the tall buildings and their construction completion year for each city. Number of buildings being constructed over each decade is aggregated to show the major trends of the economic change.

The plot indicates number of newly constructed tall buildings per decade for New York, Chicago, Los Angeles and Detroit from 1900s to 2019s. The overall trend shows a small peak around 1920s, an apparent valley around 1940s and an increment after then. This agrees with the economic situation among those times (e.g. The Great Depression during 1930s, The 1990s United States boom). The individual trend of New York shows a dramatic increment from 2000s to 2010s, whereas Detroit has an expected decrement for two decades before its bankruptcy in 2013 and has not yet constructed any other tall buildings after then.

Data Source: