Lecture 6

• bar charts • line chart • pie chart • scatter plot • heat map • highlight table • bubble chart • tree map

• histogram • shared axis chart • combo chart (dual axis) • bullet chart donut chart • unit chart • box and whisker chart • waterfall chart

bar charts represent numeric values as bars - very effective for comparing magnitudes and spotting highs and lows in the data

• represents trends over time • requires numeric values plotted as lines over dated related field

• best at showing part to whole relationships when there arent too many slices • does not give the viewer a way to quickly and accurately compare info

• a collection of scattered points • allows us to see the relationship between two variables, and are great for visualizing clusters, showing possible correlations and spotting outliers

• display information using a matrix of colors • the density of the colour represent the concentration of information or the relative magnitude of the values • great for spotting patterns e. g sales quota assessment

• presents data using circles of different sizes and colors • a larger or darker circle represent items with higher values • used to show the relationship between three or more measures

• represents tabular info in a color coded grid • the background cell corresponds to the relative magnitude of the value it represents • great when displaying the actual numeric values

• represent part to whole and hierarchical relationships using a series of rectangles. • sizes and colors of rectangles will vary based on the values they represent • larger rectangles or concentrated coloured rectangles depict the highest values

• graphs that plot frequency distribution of data - similar to bar chart, this one groups numbers into ranges

• chart that shares one axis among multiple measures - can be used when the measures have similarly ranged values and can be presented using one mark and one scale

• uses two axis for two different measures - useful when two measures have different types or ranges or if the two measures need to be displayed differently

• chart borrows from thermometers and progress bars, typically used to show goals vs actuals • allows us to visualize progress in a small, concise graph

• display each unit of measure as a single mark or symbol - create more engagement because of the images and visuals used

similar to a pie chart but has a hole in the middle

• charts that divide their data points - great for comparing distributions of data for different group or categories side by side

• looks like bar charts, specifically show the aggregated effect of a series of positive and negative values • final bar represents the net value of all the preceding values • useful when the history as well as the final net value is important

Novel informative efficient aesthetic

• Pajek - used for analysis and visualization of large networks containing up to one billion vertices • Gephi is usually a graph exploration and manipulation software written in java • NodeXL • GraphStream • networkit -UNISoN SocioViz

• a psychological theory of perception that suggests the mind understands external stimuli as whole rather than the sum of their parts • the wholes are structured and organized using grouping laws

• proximity • similarity • enclosure - perceive objects as belonging together when they are enclosed in a way it appears to create a boundary around them • closure - we perceive open, incomplete and unusual forms as closed, whole, and regular • continuity - perceive objects belonging together if they appear to be a continuation of one another • connectedness - perceive objects that are connected as part of the same group