All versions of Octave include a number of built-in data types including real and complex scalars and matrices character strings, and a data structure type.
It is also possible to define new specialized data types by writing a small amount of C++ code. On some systems new data types can be loaded dynamically while Octave is running so it is not necessary to recompile all of Octave just to add a new type. See Dynamically Linked Functions for more information about Octave's dynamic linking capabilities. User-defined Data Types describes what you must do to define a new data type for Octave.
| typeinfo (expr) | Built-in Function |
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Return the type of the expression expr as a string. If EXPR is omitted return an array of strings containing all the currently installed data types. |