Teaching:TUW - UE InfoVis WS 2008/09 - Gruppe 02 - Aufgabe 4
Aufgabenstellung
Gegebene Daten
Homer Simpson's Trinkverhalten in Abhängigkeit von seinen Lebensumständen
...Visualisierung von Homer's Lebensabschnitten bzw. Ereignissen mit Einfluss auf sein
Trinkverhalten (zB.: Kindheit, Pubertät, Arbeitslosigkeit, Beziehungen, Hochzeit, Geburt
der Kinder, Liebeskummer, Alltag, etc.) von seiner Geburt bis Jetzt + mögliche
Zukunftsszenarien (mind. 3).
- Die Menge folgender Getränke soll für die jeweiligen Lebensumstände ablesbar sein
(ml oder Liter - je nachdem - pro Tag, Monat, Jahr (z.B.: Fokus+Kontext Methoden):
a) Wasser
b) Milch
c) Fruchtsaft
d) Cola
e) Kaffee (Würfelzucker?)
f) Bier
(vereinfacht angenommen, Homer trinkt ausschließlich diese Getränke)
- Die folgenden Werte sollen abhängig von den konsumierten Getränken ablesbar sein:
1) g oder kg konsumierter Zucker (aus Getränken) + empfohlene Maximaldosis pro Tag, Monat, Jahr (empfohlene Maximaldosis/Tag: 50g; enthaltener Zucker: 10g/100 ml Cola; 10g/100 ml Fruchtsaft; 3g/Würfelzucker).
2) mg konsumiertes Coffein + empfohlene Maximaldosis pro Tag, Monat, Jahr (empfohlene Maximaldosis/Tag: 600mg; enthaltenes Coffein: 10 mg/100 ml Cola; 80 mg/100 ml Kaffee).
3) g konsumierter Alkohol + empfohlene Maximaldosis pro Tag, Monat, Jahr (empfohlene Maximaldosis/Tag: 20g; enthaltener Alkohol: 3,6 g/100ml Bier)
- Die Daten sollen zur medizinischen/psychologischen Analyse visualisiert werden.
- Die bisher erlernten Design-Prinzipien sollen umgesetzt werden (z.B.: Optimierung der Data-ink ratio).
- Die Mockups sollten zumindest 1) Homer's Leben im Überblick 2) und eine Detailansicht wiedergeben.
- Alle nicht angeführten Daten können frei erfunden werden.
Description
- Application area analysis & dataset analysis
The predefined dataset describes Homer Simpson's lifetime beverage consumption.
We distinguish between beverages (water, milk, juice, cola, café, and beer), contained substances (sugar, alcohol, caffeine), and their according recommended daily allowance (RDA). As actual data, we store ingested liters of fluids and the time of consumption (=life-period like child ship, puberty, unemployment, marriage, birth of children, retirement, divorce, illness,..). The exact amounts of substances contained in drinks are stored separately and are not subject of primary interest. A special issue is the unknown number of sugar cubes per café.
For measurement of consumed drinks, we use the ordinal data type Liter and for substances kilogram or gram, the life period is considered as nominal type and cannot directly be linked to a specific age or time span. This results in a dataset structure of two dimensions.
- Target group analysis
- Goal
Concept
- Visualization
We should use graphs, when the message is contained in the shape of the values and the document you produce will be used to reveal relationship among multiple values [Few, 2004]. In our task about Homer Simpson's drink consumption are too much different values that have to be shown, that a table all alone won't show the information clearly enough.
- Visual Mapping
We separate the two different views for medical and psychologic interests:
On the psychologic or "drink"-view of our data, the drinks to be shown are selected:
The different life periods are mapped onto the x-axis and the consumed amount (in liters) onto the y-axis.
On the medical or "substance"-view, the sugar-, coffein- and alcohol-rates can be examined:
Again, the various life periods are shown on the x-axis. For each period, the amounts of consumed substances sugar, caffeine and alcohol are mapped onto the y-axis in multiples of the according RDA. We put a horizontal line where y equals one RDA. This That way, it is easy recognizable which substance consumption exceeds one RDA.
- Description of the technologies
We use a bar diagram to show our nominal dataset, because a simple comparison of the categorical subdivision of one or more measures in no particular order can be shown very easy by this visualization[Few, 2004].
On the "substance"-view, we decided to show (for the medicine view) the differences to the maximal dosis by mapping the substances on an RDA scale, where the maximum dose is clearly shown by the horizontal line [Few, 2004]. The bars then show whether Homer Simpson's drinking behavior was adequate for each period, and if not, by how much one RDA was exceeded.
- Interaction
The user can use between the two views by clicking on the arrows between the two selection windows, where the different drinks and the different substances can be selected. He can select one or more drinks/substances, which will be shown on the diagram.
In the "drinks"-view by selecting a bar he can see a label, where the content of substances will be shown and their recommended maximum dose.
So in the substances-view the liters of the drink and the g, mg and ml are popped-up in a label, when the bar is selected.
The selection of the different views is made for the different viewers and interests.
- MockUp
Figure1=drinks-view with selected bar
Figure 1 shows the different drinks in the different life periodes, so it is made for the physiological interest on the relation between the drinking habits and the time of his life.
Figure2=substance-view with selected bar
Figure 2 is made for the medicinical interest on the deviation to the recommended maximum dose.
Additionally we think about an drag-and-drop- and copy-option for the different-life-periodes, because maybe Homer has more than one time lovesickness. Also more than the given drinks could be added.
References
- [Few, 2004]:Stephen Few, Show Me the Numbers: Designing Tables and Graphs to Enlighten, Analytics Press, 2004, Appendix A - Table and Graph Design at a Glance.