MATLAB Programming

Input/Output
Input/Output
This section covers the following topics:
• “File I/O Function Overview” on page 12-49
• “Common I/O Functions” on page 12-49
• “Readable File Formats” on page 12-50
• “Using the Import Wizard” on page 12-50
• “Loading Mixed Format Data” on page 12-50
• “Reading Files with Different Formats” on page 12-51
• “Reading ASCII Data into a Cell Array” on page 12-51
• “Interactive Input into Your Program” on page 12-51
For more information and examples on importing and exporting data, see
Technical Note 1602:
http://www.mathworks.com/support/tech-notes/1600/1602.html
File I/O Function Overview
For a good overview of MATLAB file I/O functions, use the online “Functions
— Categorical List” reference. In the Help browser Contents, select
MATLAB > Functions — Categorical List, andthenclickFile I/O.
Common I/O Functions
The most commonly used, high-level, file I/O functions in MATLAB are save
and load. For help on these, type doc save or doc load.
Functions for I/O to text files with delimited values are textread, dlmread,
dlmwrite. Functions for I/O to text files with comma-separated values are
csvread, csvwrite.
For more information: See Text Files in the MATLAB “Functions —
Categorical List” reference documentation.
12-49