Determine if input has specified data type matlab isa mathworks. This matlab function returns 1 true if a is a cell array. The input argument a can have any data type if a is an object, then isa returns 1 if datatype is either the class of a or a superclass of a. Matlab dispatches to the class method when the function is called with an instance of the class. The size of this matrix or array is a minimum of 0by0 and this can grow up to a matrix or array of any size. Determine whether array is object of specified class matlab. The following table shows the most commonly used data types in matlab.
There are many different data types, or classes, that you can work with in the matlab software. If you define functions that require inputs that are. Matlab language use validateattributes matlab tutorial. You can overload matlab arithmetic, logical, relational, and indexing operators by defining class methods with the appropriate names. Determine if input has specified data type matlab isa. Function handles connect your code with any matlab function regardless of the current scope.
If you want to be even more specific, you can use ischar, isfloat, iscell, etc. See the handle class for a list of operations defined for that class. Determine if input is matlab object matlab isobject mathworks. You can check the data type of a variable using any of these commands. Call mxisclass to determine whether the specified mxarray has this type. The function validateattributes can be used to validate an array against a set of specifications. Matlab does not check if the class is derived from a base class. Otherwise, it returns false instances of matlab numeric, logical, char, cell, struct, and function handle classes return false. Every data type stores data that is in the form of a matrix or array. To determine if a variable has a specified data type, use the isa function. If a is an object, then isa returns 1 if datatype is either the class of a or a superclass of a. The following class function syntaxes apply only within classes defined before version 7.