This is machine translation

Translated by Microsoft
Mouseover text to see original. Click the button below to return to the English version of the page.

Note: This page has been translated by MathWorks. Please click here
To view all translated materials including this page, select Japan from the country navigator on the bottom of this page.

Map Containers

Objects with keys that index to values, where keys need not be integers


containers.MapMap values to unique keys
isKeyDetermine if containers.Map object contains key
keysIdentify keys of containers.Map object
removeRemove key-value pairs from containers.Map object
valuesIdentify values in containers.Map object


Overview of Map Data Structure

A Map is a type of fast key lookup data structure that offers a flexible means of indexing into its individual elements. The indices for a Map can be nearly any scalar numeric value or a character vector.

Description of Map Class

A Map is an object, or instance, of the containers.Map class.

Create Map Object

Create a Map using the containers.Map class.

Examine Contents of Map

This example shows how to find all the keys and values in a Map.

Read and Write Using Key Index

This example shows how to read from a Map structure and how to add new key/value pairs.

Modify Keys and Values in Map

This example shows how to remove and modify keys and values in a Map structure.

Map to Different Value Types

This example shows how to store structures or cell arrays in a Map structure.

Was this topic helpful?