This is a package which provide for an improved version of the LinearOperator class found in scipy.sparse.linalg. It also provides a set of LinearOperator using scipy linear functions (fft, etc ...) and iterative optimization methods, particularly geared toward sparse estimation.

List of requirements:

• numpy >= 1.3
• scipy >= 08

Optional requirements:

• PyWavelets
• fht (fast hadamard transform)