![]() In the following example, an attempt to add a 1-by-3 matrix to a 0-by-3 empty matrix results in an error. It is possible for the result to be the empty row vectorĪs with all matrices in MATLAB, you must follow the rules concerning compatible dimensions. Many operations in MATLAB produce row vectors or column vectors. This is still true if m or n or p is zero. So if A is m-by- n and B is m-by- p, then C is m-by-( n + p). Requires that A and B have the same number of rows. The size of the result should be that same function, evaluated at zero. The basic model for empty matrices is that any operation that is defined for m-by- n matrices, and that produces a result whose dimension is some function of m and n, should still be allowed when m or n is zero. ![]() To create a 0-by-5 matrix, for example, use You can create empty arrays of other sizes using the zeros, ones, rand, or eye functions. To create a 0-by-0 matrix, use the square bracket operators with no value specified. Examples of more complex matrices are those of dimension 0-by- 5 or 10-by- 0-by- 20. The simplest empty matrix is 0-by-0 in size. ![]() M-File Programming (Programming and Data Types) Programming and Data TypesĪ matrix having at least one dimension equal to zero is called an empty matrix.
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