IMP  2.0.0
The Integrative Modeling Platform
Public Member Functions | List of all members
IMP::example::ExampleUnaryFunction Class Reference

A simple unary function. More...

#include <IMP/example/ExampleUnaryFunction.h>

+ Inheritance diagram for IMP::example::ExampleUnaryFunction:

Public Member Functions

 ExampleUnaryFunction (Float center, Float k)
 
virtual double evaluate (double feature) const
 Calculate score with respect to the given feature. More...
 
virtual DerivativePair evaluate_with_derivative (double feature) const
 Calculate score and derivative with respect to the given feature. More...
 
- Public Member Functions inherited from IMP::kernel::UnaryFunction
 UnaryFunction (std::string name="UnaryFunction%1%")
 
- Public Member Functions inherited from IMP::base::Object
virtual void clear_caches ()
 
virtual IMP::base::VersionInfo get_version_info () const =0
 Get information about the module and version of the object.
 
void set_check_level (CheckLevel l)
 
void set_log_level (LogLevel l)
 Set the logging level used in this object. More...
 
void set_was_used (bool tf) const
 
void show (std::ostream &out=std::cout) const
 
const std::string & get_name () const
 
void set_name (std::string name)
 

Additional Inherited Members

- Protected Member Functions inherited from IMP::base::Object
 Object (std::string name)
 Construct an object with the given name. More...
 
- Related Functions inherited from IMP::kernel::UnaryFunction
typedef IMP::base::Vector
< IMP::base::WeakPointer
< UnaryFunction > > 		UnaryFunctionsTemp
 

Detailed Description

This one happens to be a harmonic. The source code is as follows:

/**
* \file IMP/example/ExampleUnaryFunction.h
* \brief A simple unary function.
*
* Copyright 2007-2013 IMP Inventors. All rights reserved.
*
*/
#ifndef IMPEXAMPLE_EXAMPLE_UNARY_FUNCTION_H
#define IMPEXAMPLE_EXAMPLE_UNARY_FUNCTION_H
#include <IMP/example/example_config.h>
#include <IMP/UnaryFunction.h>
#include <IMP/unary_function_macros.h>
#include <IMP/utility.h>
IMPEXAMPLE_BEGIN_NAMESPACE
//! A simple unary function
/** This one happens to be a harmonic.
The source code is as follows:
\include ExampleUnaryFunction.h
\note The class does not have an IMPEXAMPLEEXPORT
since it is all defined in a header.
*/
class ExampleUnaryFunction : public UnaryFunction
{
Float center_;
Float k_;
public:
/** Create with the given center and spring constant. While it
is generally bad form to have two Float arguments, it is
hard to avoid here, and there is a bit of a sanity check.*/
ExampleUnaryFunction(Float center, Float k) : center_(center), k_(k) {
IMP_USAGE_CHECK(k > 0, "The spring constant must be positive.");
}
virtual DerivativePair evaluate_with_derivative(double feature)
const IMP_OVERRIDE {
return DerivativePair(evaluate(feature), k_*(feature - center_));
}
virtual double evaluate(double feature) const IMP_OVERRIDE {
return .5*k_*algebra::get_squared(feature - center_);
}
IMP_OBJECT_METHODS(ExampleUnaryFunction);
};
IMPEXAMPLE_END_NAMESPACE
#endif /* IMPEXAMPLE_EXAMPLE_UNARY_FUNCTION_H */
Note
The class does not have an IMPEXAMPLEEXPORT since it is all defined in a header.

Definition at line 27 of file ExampleUnaryFunction.h.

Constructor & Destructor Documentation

IMP::example::ExampleUnaryFunction::ExampleUnaryFunction ( Float  center,
Float  k 
)

Create with the given center and spring constant. While it is generally bad form to have two Float arguments, it is hard to avoid here, and there is a bit of a sanity check.

Definition at line 35 of file ExampleUnaryFunction.h.

Member Function Documentation

virtual double IMP::example::ExampleUnaryFunction::evaluate ( double  feature) const
virtual
Parameters
[in]featureValue of feature being tested.
Returns
Score

Reimplemented from IMP::kernel::UnaryFunction.

Definition at line 43 of file ExampleUnaryFunction.h.

virtual DerivativePair IMP::example::ExampleUnaryFunction::evaluate_with_derivative ( double  feature) const
virtual
Parameters
[in]featureValue of feature being tested.
Returns
a FloatPair containing the score and its partial derivative with respect to the given feaure.

Reimplemented from IMP::kernel::UnaryFunction.

Definition at line 39 of file ExampleUnaryFunction.h.

The documentation for this class was generated from the following file: