Robert Simmon is the lead visualizer for the Nasa Earth Observatory and has an extensive background in using colour as a representation tool. After watching his talk from the 2014 Open Vis Conference, I gained great insight into how colour can be used of data visualization. Simmon says, “The purpose…
The introductory chapter of Data Visualization for Social Science by Kieran Healy highlights visual, statistical and physiological elements that affect poor form in data visualization. Healy defines these three pillars as aesthetic, substantive and perceptual, and “…while often found together, [they] are distinct from one another” (Healy, 2018). Aesthetic missteps…
The bar chart (Invented by William Playfair) is tool used to visually represent categorical data. Categorical data is derived from qualitative data and parsed into discrete groups (Ex. Month of Year, Country of Origin). This form of visualization lends itself best for comparison between categories of data. The bar chart…