The ideal workflow to import data into MATLAB® depends on how your data is formatted as well as your personal preferences. You can import data programmatically or use a specialized workflow. The most common solution is to import data programmatically using a function tailored for your data. Show
When you import data into the MATLAB workspace, the new variables you create overwrite any existing variables in the workspace that have the same name. Importing Files ProgrammaticallyMATLAB includes functions tailored to import specific file formats. Consider using format-specific functions when you want to import an entire file or only a portion of a file. Many of the format-specific functions provide options for selecting ranges or portions of data. Some format-specific functions allow you to request multiple optional outputs. This table shows the file formats that you can import and export from the MATLAB application. Workflows for Specialized Data FormatsMemory-Mapping for Binary DataFor binary data files, consider the Overview of Memory-Mapping. Memory-mapping enables you to access file data using standard MATLAB indexing operations. Memory-mapping is a mechanism that maps a portion of a file, or an entire file, on disk to a range of addresses within an application's address space. The application can then access files on disk in the same way it accesses dynamic memory. The principal benefits of memory-mapping are efficiency, faster file access, the ability to share memory between applications, and more efficient coding. Specialized Importing with MATLAB ToolboxesMATLAB toolboxes perform specialized import operations. For example, use Database Toolbox™ software for importing data from relational databases. Refer to the documentation on specific toolboxes to see the available import features. Web Services for Reading and Writing DataYou can use web services such as a RESTful or WSDL to read and write data in an internet media type format such as JSON, XML, image, or text. For more information, see:
Reading Data with Low-Level IOIf the format-specific functions cannot read your data and the specialized workflows do not fit your needs, use low-level I/O functions such as Related Topics
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