Data Visualization and Prototype Application Development

Flashcards reviewing key concepts of data visualization, dashboard creation, and related tools.

Data Scientists Deliverables

Communicating new insights to the end user through presentations, new data viewports, or real-time dashboards.

Decision Types

Strategic decisions require analysis and reporting, whereas operational decisions require regular refreshing of reports.

Data Visualization

Presenting data and information as graphs, charts, or maps.

Data Visualization Purpose

To emphasize observations to enable people to quickly and easily grasp their data.

Common Data Visualization Types

Column Chart, Line Graph, Pie Chart, Bar Chart, Heat Maps, Scatter Plot, Bubble Chart, Funnel Chart, Radar Chart, Tree Chart.

Crossfilter

A JavaScript MapReduce library that enables extremely speedy slice and dice on payment history.

Alternatives to Crossfilter

Map.js, Meguro, and Underscore.js.

Abstraction layer on top of d3.js

NVD3, C3.js, xCharts and Dimple.

dc.js

Can easily set up an interactive dashboard where clicking one graph will create filtered views on related graphs.

Libraries required to build dc.js application

JQuery, Crossfilter.js, d3.js, and Bootstrap.

index.html

The HTML page that contains our application

application.js

To hold all the JavaScript code

application.css

For CSS (Cascading Style Sheet)

reduceAdd() function

A function that describes what happens when an extra observation is added.

reduceRemove() function

A function that describes what needs to happen when an observation disappears.

reduceInit() function

This one sets the initial values for everything that’s calculated.

dc.renderAll()

Draws the graphs.

.filterAll() method

Removes all filters on a specific dimension.

dc.redrawAll()

Manually triggers all dc charts to redraw.

Dashboard development tools

Tableau, MicroStrategy, Qlik, SAP, IBM, SAS, Microsoft, Spotfire

Data Visualization tools with trial period and no free community edition

Wijmo, Kendo, and FusionCharts

Visualization Tool

HighCharts, Chartkick, Google Charts, d3.js

Interface used to build data science

HTML5, SAP’s BusinessObjects, SAS JMP, Tableau, Clickview,