Topic 2 - D3 Data Handling and Visualization Basics

Question 1

Tabular Data

Answer 1

Data structured in columns and rows, often in a spreadsheet or database format.

Question 2

Delimited Data

Answer 2

Tabular data where values in each row are separated by a specific character (delimiter), such as a comma (CSV) or tab.

Question 3

Nested Data

Answer 3

Data organised in a hierarchical structure where objects contain child objects, often represented as trees.

Question 4

Network Data

Answer 4

Data representing a collection of objects (nodes) and the connections (edges or links) between them.

Question 5

Geographic Data

Answer 5

Data representing locations or spatial geometry, used for mapping.

Question 6

Raw Data

Answer 6

Unstructured data, such as text blocks or images, in its original form.

Question 7

Object (JSON)

Answer 7

A data structure in JavaScript Object Notation (JSON) consisting of key-value pairs, enclosed in braces{}.

Question 8

Literal

Answer 8

A simple data point in JavaScript, such as a string (“Apple”) or a number (64237).

Question 9

Callback Function

Answer 9

A function passed as an argument to another function, which is then executed inside the outer function. In D3 data loading, the callback function receives the loaded data.

Question 10

Asynchronous

Answer 10

Operations that do not block the execution of subsequent code. D3 data loading functions are asynchronous.

Question 11

Quantitative Data

Answer 11

Numerical data that represents measurable quantities.

Question 12

Categorical Data

Answer 12

Data that falls into discrete groups or categories.

Question 13

Topological Data

Answer 13

Data that describes the relationships or connections between different data points.

Question 14

Geometric Data

Answer 14

Data that represents spatial information or the form and size of objects.

Question 15

Temporal Data

Answer 15

Data that represents time and dates.

Question 16

Casting

Answer 16

The process of converting data from one datatype to another.

Question 17

Normalising (Scaling)

Answer 17

The process of mapping data values from their original range to a new range, often for visual representation.

Question 18

Binning (Grouping)

Answer 18

The process of sorting quantitative data into discrete categories or ranges.

Question 19

Quantiles

Answer 19

Values that divide a set of data into equal-sized parts.

Question 20

Nesting

Answer 20

The process of grouping data based on shared attributes to create a hierarchical structure.

Question 21

Data Binding

Answer 21

The process in D3 of associating data with DOM elements.

Question 22

Selection

Answer 22

A collection of one or more DOM elements targeted by D3 for manipulation.

Question 23

.data()

Answer 23

A D3 function used to bind an array of data to a selection of DOM elements.

Question 24

.enter()

Answer 24

A D3 selection representing the data values that do not have corresponding DOM elements in the initial selection.

Question 25

.exit()

Answer 25

A D3 selection representing the DOM elements in the initial selection that do not have corresponding data values.

Question 26

.append()

Answer 26

A D3 function used to create and add new DOM elements to a selection.

Question 27

.insert()

Answer 27

A D3 function similar to .append(), but allows specifying the position where the new element should be inserted.

Question 28

.attr()

Answer 28

A D3 function used to set attributes of selected DOM elements.

Question 29

.html()

Answer 29

A D3 function used to set the inner HTML content of selected DOM elements.

Question 30

.style()

Answer 30

A D3 function used to set CSS styles of selected DOM elements.

Question 31

DOM (Document Object Model)

Answer 31

A programming interface for web documents, representing the structure of HTML and XML documents as a tree.

Question 32

SVG (Scalable Vector Graphics)

Answer 32

An XML-based vector image format used for two-dimensional graphics.