Two Centuries of U.S. Immigration

This visualization represents the immigration growth in the United States from the year 1820 to 2013. The visualization represents 10,000 people using 1 dot. The dots change dynamically to depict people migrating from different countries across the world. This visualization also enables users to see the top 3 countries from where the immigration has be the highest in a given year.

Good points about this visualization:

• Dynamic data changing which enables user to understand the meaning of the visualization without spending a lot of time to understand it.
• Color coding: Changes in the colors of the countries when migration occurs helps the user to spot the countries from where people are coming to the United States.
• Visualization Speed: The density and speed of dots changing also helps in understanding the increase in the immigration over the period of years.
• Scaling: The year range scale also gives a clear understanding of the visualization without giving any room for ambiguity regarding which year the data is representing.
• Legend: The legend also helps in giving exact numbers for the years and the top 3 nations the immigration has been the highest from.

Points to be improved:

• A comparative visualization could have helped to understand the variation in immigration from the different countries by using dynamic bar charts. This would have helped the user to see the density of immigration coming in from different nations.
• A legend depicting whether the colors assigned to the different countries have any significance would have enhanced the user experience.

Conclusion: A good visualization clearly depicting the insights of the observation.

Source: http://blog.visme.co/best-information-graphics-2016/ 

Reference: http://metrocosm.com/animated-immigration-map/