Information Visualization: An Introduction by Robert Spence (auth.)

By Robert Spence (auth.)

Information visualization is the act of gaining perception into information, and is conducted by means of almost every person. it is often facilitated by way of turning info – frequently a set of numbers – into photos that permit a lot more uncomplicated comprehension. everybody advantages from info visualization, no matter if web buying, investigating fraud or indulging an curiosity in artwork. So no assumptions are made approximately expert historical past wisdom in, for instance, computing device technology, arithmetic, programming or human cognition. certainly, the ebook is directed at major audiences. One contains first 12 months scholars of any self-discipline. the opposite includes graduates – back of any self-discipline – who're taking a one- or two-year process education to be visible and interplay designers. by means of concentrating on the task of layout the pedagogical strategy followed through the publication is predicated at the view that how to find out about the topic is to do it, to be artistic: to not organize for the ever-present exam paper. The content material of the ebook, and the linked workouts, are usually used to help 5 inventive layout workouts, the ultimate one being a gaggle venture mirroring the task of a consultancy project a layout (not an implementation) for a shopper. Engagement with the cloth of this publication could have various results. The composer of a faculty publication and the applicant for a multi-million funding may still either be ready to show their message extra successfully, and the curator of an exhibition can have new presentational thoughts on their palette. For these scholars education to be visual/interaction designers the workouts have resulted in unique and stimulating outcomes.

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A useful variant of the histogram (Fig. 5) is achieved by ‘pushing over’ its columns and then abutting them as shown in Fig. 6, a representation known as a bargram. But why should a bargram be of any interest, especially as it omits the information that no cars are available in the £14k–£16k range? As well as offering an overview of car prices it provides a convenient framework for adding more information, as shown in Fig. 7. Here, individual cars are represented by small circles (icons). The advantage of this is that we can encode, quite compactly in the circles, additional information about each car.

We provide three such examples. 1 Mortgage Fraud The Serious Fraud Office of the United Kingdom spent eight person-years examining 48 file drawers of paper-based data in order to identify the perpetrator of a suspected building society fraud (Davidson 1993). As a result an alleged perpetrator was identified, sent for trial and judged guilty. The same task was then set to a single investigator who was provided with a visualization tool with which to access and view the same data. The same perpetrator was identified within 4 weeks, a time improvement of about 100 times.

Since the relation between Term, Amount (of loan) and Monthly Payment is known to the Lender, why not provide the user with a fluid interactive interface such as the one in Fig. 17? It allows you to vary any of the three important quantities and see its effect on the others. If that is possible the user can not only explore, but – most effectively – explore dynamically. As they smoothly move the sliders up and down and see the resulting effect they are building up a mental model of – in other words they are visualizing – the relations between variables that are of interest to them.

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