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Tufte reviews how information can be presented (i.e. a minimal amount via a sentence; a moderate amount via a table; a huge amount via a graphic) and then turns his attention to graphics -- from their beginnings in cartography to how to achieve graphic excellence today.
He urges a multi-disciplinary approach, cautioning that, “Allowing artist-illustrators to control the design and content of statistical graphics is almost like allowing typographers to control the content, style, and editing of prose.” He touches on psychology and cognition. He rails against using graphic design to deceive, and enlightens readers by pulling numerous examples of misrepresentation from prominent media. He devotes a large part of the book to improving the effectiveness of graphs by urging the elimination of “chart junk” (e.g. moiré-effect cross-hatching) and numerous other sources of “non-data ink.” In fact, a chapter wherein he strips away seemingly necessary text, frames, hatch marks, etc. (leaving little more than an ether vapor but in the process simplifying and clarifying the meaning) is revelatory.
So many books I've read recently have referenced Tufte, and I'm glad to have finally read him directly. Highly recommended.
Rarely do I find a book that I would call beautiful, but this meets the criteria, both as a physically appealing book, apropos to the purpose of the book, and an informationally dense, and well presented one. A favorite quote of
The book manages to decompose graphical presentation of data into categories other than the x- and y-axes, and instead talks about multifunctional elements and data density. The book reimagines the nature of numerical information using a graphical design perspective, with a healthy dose of common sense as to how graphs are used, and a veritable treasure trove of examples of both good and bad design.
This book, along with "How Buildings Learn," by Stewart Brand, is a rare example of a narrow focus with an incredibly broad appeal. This book is not for the narrow specialist in constructing the sometimes obscurely complex graphics displayed, but rather for anyone who is interested in the data presented to them, and certainly anyone who produces this data in any form.
Two lessons emerge from Tufte's masterpiece:
1. Eliminate from a graph anything that doesn't add information
2. Maximize the amount of information per square inch
Don't let the antiquated looks of the book deceive you:
I do wish, however, that this second edition incorporated more advice specific to computer-generated graphics. I'm particularly disappointed because this edition was published as recently as 2001, many years after the personal computer became THE tool for graph making. Without such applied advice, and given the old look of the examples and the large format of the volume, I'm afraid this book will be regarded by many as a geeky coffee-table piece.
Immaculately designed and packed with fantastic illustrations of good and bad approaches to visualisation, this book is a pleasure to read and absorb. I found that it worked well both when reading just a couple of pages at a time and when immersing myself in it for a longer period of time.
This is one of those books that I know I will be revisiting for reference in the future.
Outline:
Part I — Graphical Practice:
1 Graphical Excellence
2 Graphical Integrity
3 Sources of Graphical Integrity and Sophistication
Part
1 - Data Ink and Graphical Redesign
2 – Chart junk: Vibrations, Grids and Ducks
3 - Data Ink Maximization and Graphical Design
4 - Multifunctioning Graphical Elements
5 - Data Density and Small Multiples
6 - Aesthetics and Technique in Data Graphical Design
Part III — Design for Display of Information
1 - Epilogue
Part I — 1) Graphical Practice: Graphical Excellence:
Tufte’s summarizes by saying, it is a matter of substance, statistics, and of design. It gives the viewer the greatest number of ideas in the shortest time with least amount of ink space. It consists of communicating complex ideas communicated with clarify, precision and efficiency.
- It is about clarity in communicating with precision, efficiency that shows data, induce user to think about substance of visualization, avoid distortion, present many numbers in small space, make large datasets coherent, encourage eye to compare various pieces of data, reveal data at several layers of detail, serve clear purpose, be closely integrated with statistical and verbal description of data.
Graphics reveal about data.
-Every Graph or Visualization should let the user to think about the data, not the methodology or technique
-Time Series Data
Two Greatest Scientist of Modern Graphical Design are J.H Lambert, Swiss German Mathematician and William Playfair, Scottish political economist.
Playfair preferred Graphics.
-Descriptive Chronology is not casual expression.
Charles Minard, the French Engineer who explained Napoleon’s army — combination of data-map and time series.
Most Modern Graphics are relational — x, y that encourages to find out casual relationship.
Part 1 — 2) Graphical Practice: Graphical Integrity:
For many of us, we constantly think of lies when we look at a graphic or statistic.
Around 1960, John Turkey made Graphical Practice respectable.
What is distortion in Data Graphic?
Lie Factor = size of effect shown in graphic/ size of effect in data
If it’s greater than 1.05 and less than .95, then it’s substantial
Show data variation not design variation.
Context is important for Graphical Integrity — compared to what?
Lying Graphic cheapen graphical art everywhere.
The Six principles of Graphical Integrity:
- Representation of numbers present in the graphic should be directly proportional to numerical quantities reported
- Clear, detailed and thorough labeling should be used to defeat graphical distortions and ambiguity
- Show data variations, not design variations
- In time series display, use standardized monetary units
- The number of information carrying dimensions should not exceed number of dimensions in data
- Graphics must not quote data out of context
Part 1 —3) Graphical Practice: Sources of Graphical Integrity and Sophistication
Why do they lie?
-Lack of Quantitive skills, the doctrine that statistical data is boring
Many believe that graphics are there to entertain unsophisticated readers. Japan has the highest use of statistical graphics in their newspaper.
Part II — 1) Theory of Data Graphics: Data Ink and Graphical Redesign:
Data Graphics should draw viewers attention to substance of data. It should form quantitive contents.
Fundamental principle is, “Above all else, show the data.” This is the principle for a theory of data graphics.
Data Ink ratio is data ink/total ink used in graphic. Remember to maximize the data ink ratio devoted to the data. Other side of data ink ratio is to erase non-data-ink, within reason.
There’s five principles in theory of data graphics produce substantial changes in graphical design.
-Above all else show the data
-Maximize the data-ink ratio
-Erase non-data-ink
-Erase redundant data-ink
-Revise and edit
Part II — 1) Theory of Data Graphics: Chartjunk, Vibrations, Grids and Duck
Interior decoration of a graphic produces a lot of raw ink that does not tell the viewer anything new. The Grid might include a lot of chart-junk.
When Graphics are taken over design or styles rather than quantitative data, it is called as Big Duck.
Part II — 2) Theory of Data Graphics: Data Ink Maximization and Graphical Design.
Reducing ink ratio in some of the charts might induce changes.
Part II — 3) Theory of Data Graphics: Multifunctioning Graphical Elements
The Same Ink should be used for more than one graphical purpose, it carries data information and performs a design function usually left to non-data-ink. Data based grid is shrewd graphical devise.
Sometimes, the puzzle and hierarchy of multifunctioning graphical elements can data graphics into visual puzzles, crypto graphical mysteries. Colors sometimes generate graphical puzzles. The shades of gray gives us more easier comprehension. This is the key.
Part II — 4) Theory of Data Graphics: Data Density and Small Multiples
How many statistical graphics take advantage of ability to detect large amounts of information in small space? Let’s begin with empirical measure of graphical performance and data density.
Data density of graphic = number of entries in data matrix / area of data graphic
More information is better than less information. Maximize data density and size of data matrix within reason. High volume data must be designed with care. The cost of chart junk, non-data-ink, and redundant data-ink is even more costly in data rich design. We apply shrink principle, which means graphics can be shrunk way down. Bertin’s crisp and elegant line displays small scale graphics in a single page.
Small Multiples, resemble frame of movies, series of graphs, series combination of variables.
A Well designed Small Multiple will contain:
- inevitability comparative
- deftly multivariate
- shrunken high density graphics
- based on large matrix
- drawn exclusively with data ink
- efficient in interpretation
- often narrative in content.
Part III — Theory of Data Graphics: 1) Aesthetic and Technique in Data Graphical Design:
-Graphical Elegance is often found in simplicity of design and complexity of data
Visually attractive graphics gather power from content. Basic structure for showing data are sentence, table and graphic. Often two or three of this should be combined. Make Complexity accessible.
Graphics should prefer towards horizontal, greater in length than height.
Lines in Data Graphic should be thin. Graphical elements look better when their proportions are in balance.
Perhaps his later work is more useful. I'll have to check it out and see.
I used to spend a lot of time building ducks. Now I spend as much time destroying ducks. Read, and you'll understand what I mean.
Please comment in my profile if you know of software tools that support directly or indirectly the principles advocated by Tufte.
Read/ scanned in just a few days, because a fair bit was over my head. The parts I did understand, however, were terrific and valuable, both for readers and creators of graphs and tables.
Tufte has a sense of humor, too. When showing how graphs can be presented to be misleading
I would *love* to take a course under Tufte, or even under any decent professor who uses this book as the primary text.
If your library has this, I highly recommend you at least browse it."
Publication
Description
This book deals with the theory and practice in the design of data graphics and makes the point that the most effective way to describe, explore, and summarize a set of numbers is to look at pictures of those numbers, through the use of statistical graphics, charts, and tables. It includes 250 illustrations of the best (and a few of the worst) statistical graphics, with detailed analysis of how to display data for precise, effective, quick analysis. Also offered is information on the design of the high-resolution displays, small multiples, editing and improving graphics, and the data-ink ratio. Time-series, relational graphics, data maps, multivariate designs, as well as detection of graphical deception: design variation vs. data variation, and sources of deception are discussed. Information on aesthetics and data graphical displays is included. The 2nd edition provides high-resolution color reproductions of the many graphics of William Playfair (1750-1800), adds color to other images where appropriate, and includes all the changes and corrections during the 17 printings of the 1st edition.… (more)