What is Tufte visualization?

Tufte describes the data-ink ratio as the ratio between the non-erasable core ink of a graphic and the total ink used in the graphic. Mathematically, it can be expressed as: Data ink is the non-redundant information in a chart, and if it is removed, the chart would loose its main content.

What is considered Chartjunk?

Chartjunk refers to all visual elements in charts and graphs that are not necessary to comprehend the information represented on the graph, or that distract the viewer from this information.

What are Tufte’s principles?

Tufte suggests six fundamental principles of design: show comparisons, show causality, use multivariate data, completely integrate modes (like text, images, numbers), establish credibility, and focus on content. Each should be geared towards fully embracing the goals you defined for a given data display.

What is non data ink?

Non-Data-Ink is accordingly the ink that does not transport the information but it is used for scales, labels and edges. The data-ink ratio is the proportion of Ink that is used to present actual data compared to the total amount of ink (or pixels) used in the entire display.

What is Tufte best known for?

Edward Rolf Tufte (/ˈtʌfti/; born March 14, 1942), sometimes known as “ET”, is an American statistician and professor emeritus of political science, statistics, and computer science at Yale University. He is noted for his writings on information design and as a pioneer in the field of data visualization.

How do you pronounce Tufte?

Analyzing/Presenting Data/Information My name is Tufte, pronounced like a mufti.

When should Chartjunk be avoided?

3 Avoid chartjunk. It’s especially common to see presentations of data in the popular media that are adorned with lots of visual elements that are thematically related to the content but unrelated to the actual data. This is known as chartjunk, and should be avoided at all costs.

Which are Preattentive attributes?

Preattentive attributes are visual properties that we notice without using conscious effort to do so. Four preattentive visual properties have been defined: Color (intensity, hue) Form (orientation, line length, line width, size, shape, curvature, enclosure, added marks)

Which best describes Tufte’s principle of graphical integrity?

The representation of numbers, as physically measured on the surface of the graph itself, should be directly proportional to the numerical quantities represented. Clear, detailed and thorough labeling should be used to defeat graphical distortion and ambiguity. Write out explanations of the data on the graph itself.

What is an example of data ink?

Examples of High and Low Data-Ink An example is shown below where the background, grid lines, 3D effects, shadows and other unnecessary aesthetics distract from the data being represented. And when a graph shows the minimal graphics required to represent data it is considered to have high data-ink.

What are the forms of Preattentive attributes?

Four preattentive visual properties have been defined: Color (intensity, hue) Form (orientation, line length, line width, size, shape, curvature, enclosure, added marks) Spatial Positioning (2-D position)

What did Edward Tufte invent?

He coined the word chartjunk to refer to useless, non-informative, or information-obscuring elements of quantitative information displays. Tufte’s other key concepts include what he calls the lie factor, the data-ink ratio, and the data density of a graphic.