Data Structures

Working with Collections of Data

JSL provides these basic data structures that can hold a variety of data in a single variable:

• A list holds a number of other values, including nested lists and expressions.

• A matrix is a row-by-column table of numbers.

• An associative array maps keys to values, which can be almost any other type of data.

Contents

Lists

Evaluate Lists

Assignments with Lists

Perform Operations in Lists

Find the Number of Items in a List

Subscripts

Locate Items in a List

List Operators and Functions

Iterate through a List

Concatenate Lists

Insert a Nested List in an Existing List

Index into a List with Another List

Send Messages to Lists

Matrices

Construct Matrices

Subscripts

Inquiry Functions

Comparisons, Range Checks, and Logical Operators

Numeric Operations

Concatenation

Transpose

Indexing into a Matrix or List with Another Matrix or List

Matrices and Data Tables

Matrices and Reports

Loc Functions

Ranking and Sorting

Special Matrices

Inverse Matrices and Linear Systems

Decompositions and Normalizations

Build Your Own Matrix Functions

Statistical Examples

Associative Arrays

Create Associative Arrays

Work with Associative Arrays

Applications for Associative Arrays

Associative Arrays in Graph Theory

Associative Arrays in Set Operations

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