This section introduces the use of the IGF90 class by means of some simple examples. The tutorial consists of different blocks, which become increasingly complex as we go along. We start by showing how to construct IGF90 objects and operators, and end by solving a missing data problem:

- Constructing IGF90 objects
- Using basic member functions of the IGF90 class
- Applying a linear operator to IGF90 objects
- Applying a chain of operators to IGF90 objects
- Applying a block operator to composite IGF90 objects
- Solving a block linear problem using IGF90 objects and operators

- Constructing IGF90 objects
- Using basic member functions of the IGF90 class
- Applying a linear operator to IGF90 objects
- Applying a chain of operators to IGF90 objects
- Applying a block operator to composite IGF90 objects
- Solving a block linear problem using IGF90 objects and operators

11/11/1997