One significant capability of environments accounts for much of their popularity among engineers: their ability to do vector and matrix computations. M-file environments can operate on the following types of values:

**Scalar:**a scalar is a single value (i.e. a number).**Vector:**a vector is an ordered series of numbers.**Matrix:**a matrix is a rectangular array of numbers.### Note:

The ability to do computations on vectors and matrices gives MATLAB its name (MATrix LABoratory).**String:**variables may also contain strings of characters.