[Notes] CSCI 585 discussion 11 Visualization

27 Apr 2020 | CSCI585, English/英文, Note

Visualizing data… Why the need to visualize? Why not compute analytical solutions [symbolic], or deal with numeric data directly?

• tool to help understanding, process vision faster

What is a variation of a pie chart, where we maintain the pie shape?

• hierarchical chart, slice chart, coxcomb

What is NOT data viz?

• design, models visualization, scientific visualization

What are examples of data (viz) that can have a ‘geospatial’ component? Why is this useful?

• population/per location, climate change, weather, (data about human activity)
• give insight,

What data (viz) that don’t (can’t) involve a geospatial component?

• grammar, ontology, relation

What does interactivity provide?

• granularity, filter, get more (extra) intuitive, easier to understand

Newer forms of visualization??

How to visualize >3 columns on a flat surface?

• 3d graph, add colour, shapes, size, texture

What if a viz produces a plot (in 2D or 3D) that has very little variance?

• do transformation, rotation, scale, i.e. Principal Component Analysis (PCA)

How to visualize three columns (or 2, or 4, or n) of categorical data?

• alluvial

What is a collection of viz ‘widgets’ called? And why?

• dashboard (from car)

What to do if visualizing takes a lot of computation (and, what would be an example of this?)?

• cloud
• universal data

Real-time viz of data - practical examples?

• COVID, sales