In many real life applications, we have to work with objects that are described by many different types of variables. For example, if we wish to describe the motion of a projectile, it would be useful to know its mass (a scalar), current velocity (a vector), type (a string), and so forth. In Octave, you can instantiate a single variable that contains all this information. These types of variables are named structures and cell arrays.
A structure in Octave is like a structure in C—it has a name, for example projectile, and contains a set of fields3 that each has a name, as shown in the following figure:
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We can refer to the individual structure field using the.character:
structurename.fieldname
where structurename is the name of the structure variable, and fieldname is (as you may have guessed) the field's name.
3or members in C terminology
To show an example of a structure, we can use the projectile described above. Let us therefore name the structure variable...