Andreas Specovius / gammalib

…or the observation Python module.

The classname() method returns in a human readable format the class name. This method is needed for full automatic typecasting in Python. Full automatic typecasting has for the moment been implemented for the observation module.

Automatic type casting was implemented in the GObservations.i interface using the runtime type casting information that is maintained by the SWIG interface. The function relies on a newly introduced type() method in GObservation that provides as a string the class type.

The former GCTAObservation type casting constructor has been removed as it now should be obsolete.

…daries. Also streamlined the interface to avoid passing parameter indices. We now pass parameter references.

The CTA response was refactored. GCTAResponse was renamed GCTAResponseIrf, and GCTAResponse became an abstract base class for all possible CTA response functions. GCTAResponseIrf derives from GCTAResponse. Also GCTAResponseCube derives from GCTAResponse.

To make this work, the GObservation::response() method now returns a pointer instead of a reference. The interface definition is such that the pointer never can be NULL. The code has been adapted to comply to this new interface.

Upon reading an XML file, GCTAObservation now determines the appropriate reponse type and calls its reader. If no response is specified in the XML file, GCTAResponseIrf will be used by default.

The curvature matrix, which is equal to one-half time the Hessian matrix, is evaluated and not the covariance matrix. To make this clean, all covar terms have been renamed to curvature.

The likelihood computation has been removed from GObservations::likelihood and has been put in the virtual GObservation::likelihood method. This method implements standard likelihood computations for binned and unbinned analysis. It may be overloaded to implement observation specific likelihood computations.

The abstract pointing class has been removed as so far no abstract pointing interface is needed.

The events() set method now takes a const reference instead of a const pointer as argument. Some methods have now been defined inline.

The GFunction::eval interface has been revised and all affected GammaLib classes have been adapted.

Add GChatter argument to print() method.

The print() method now takes an argument of type GChatter to control the chattiness of the output in a homogenous manner.
Pass NORMAL chatter level in __str__ method.
Add chatter argument to print() methods.
Use GLog::chatter() method to control the chattiness of the log stream operator.
Add chatter() methods and provide member access through const references.
Add chatter() methods, provide member access through const references, and declare one liners as inline methods.

The chatter() methods control the new m_chatter attribute that is used to control the chattiness of the object's print() methods.
name() and version() methods return const references.
logFileOpen() method now sets the chattiness from the applications's chatter parameter, and name() and version() methods now return a const reference.

The ostream and GLog functions are not defined at the GBase level.