PLearn::SDBVMFieldRemapStrings Class Reference

#include <SDBVMat.h>

Inheritance diagram for PLearn::SDBVMFieldRemapStrings:

[legend]Collaboration diagram for PLearn::SDBVMFieldRemapStrings:

[legend]List of all members.

Public Member Functions
	SDBVMFieldRemapStrings (SDBVMSource source, const string &mappings, real other_values_mapping=MISSING_VALUE, real missing_values_mapping=MISSING_VALUE, SDBVMOutputCoding oc=SDBVMNumeric, VMField::FieldType ft=VMField::DiscrGeneral)
	This constructor accepts an explicitly-specified mappings string.
	SDBVMFieldRemapStrings (SDBVMSource source, const FieldStat &field_stat, real other_values_mapping=MISSING_VALUE, real missing_values_mapping=MISSING_VALUE, SDBVMOutputCoding oc=SDBVMNumeric, VMField::FieldType ft=VMField::DiscrGeneral)
virtual real	getDiscreteValue (const SDBWithStats &sdb, const Row &row) const
	Perform the actual remapping.
Static Public Member Functions
StringMap	getStringMapping (const string &mappings)
	This parses the remapping string and returns a map.
Protected Attributes
StringMap	string_mapping_
real	other_values_mapping_
Private Types
typedef SDBVMFieldDiscrete	inherited
typedef map< string, real >	StringMap

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Detailed Description

A field that remaps a finite set of strings onto discrete integers. The format of "mappings" is a string of the form: "string_0 value_0 string_1 value_1 ... string_N value_N" where the string_i cannot contain spaces, and the space is the delimiter between strings and values. If none of the "string_X" is seen then the "other_values_mapping" value is obtained. If the SDB contains a MISSING_VALUE then the "missing_values_mapping" is given.

Definition at line 768 of file SDBVMat.h.

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Member Typedef Documentation

typedef SDBVMFieldDiscrete PLearn::SDBVMFieldRemapStrings::inherited [private]

Reimplemented from PLearn::SDBVMFieldDiscrete. Definition at line 770 of file SDBVMat.h. Referenced by SDBVMFieldRemapStrings().

typedef map<string,real> PLearn::SDBVMFieldRemapStrings::StringMap [private]

Definition at line 771 of file SDBVMat.h. Referenced by getStringMapping().

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Constructor & Destructor Documentation

PLearn::SDBVMFieldRemapStrings::SDBVMFieldRemapStrings (  SDBVMSource  source, const string &  mappings, real  other_values_mapping = MISSING_VALUE, real  missing_values_mapping = MISSING_VALUE, SDBVMOutputCoding  oc = SDBVMNumeric, VMField::FieldType  ft = VMField::DiscrGeneral )

This constructor accepts an explicitly-specified mappings string. Definition at line 761 of file SDBVMat.cc. References inherited, and string_mapping_.

PLearn::SDBVMFieldRemapStrings::SDBVMFieldRemapStrings (  SDBVMSource  source, const FieldStat &  field_stat, real  other_values_mapping = MISSING_VALUE, real  missing_values_mapping = MISSING_VALUE, SDBVMOutputCoding  oc = SDBVMNumeric, VMField::FieldType  ft = VMField::DiscrGeneral )

This constructor accepts mappings coming from a FieldStat. Note that the "hasmissing" field of the FieldStat is not automatically taken into account, and you must provide a missing_values_mapping here by yourself. The mapping is not modified in any way by the presence of missing values. Definition at line 776 of file SDBVMat.cc. References string_mapping_, and PLearn::FieldStat::symbolid.

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Member Function Documentation

real PLearn::SDBVMFieldRemapStrings::getDiscreteValue (  const SDBWithStats &  sdb, const Row &  row )  const [virtual]

Perform the actual remapping. Implements PLearn::SDBVMFieldDiscrete. Definition at line 795 of file SDBVMat.cc. References PLearn::SDBVMSource::getValue(), PLearn::FieldValue::isMissing(), other_values_mapping_, PLearn::space_to_underscore(), and string_mapping_.

SDBVMFieldRemapStrings::StringMap PLearn::SDBVMFieldRemapStrings::getStringMapping (  const string &  mappings  )  [static]

This parses the remapping string and returns a map. The maximum target value in the map is set into the last (reference) argument. Definition at line 742 of file SDBVMat.cc. References StringMap.

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Member Data Documentation

real PLearn::SDBVMFieldRemapStrings::other_values_mapping_ [protected]

Definition at line 804 of file SDBVMat.h. Referenced by getDiscreteValue().

StringMap PLearn::SDBVMFieldRemapStrings::string_mapping_ [protected]

Definition at line 803 of file SDBVMat.h. Referenced by getDiscreteValue(), and SDBVMFieldRemapStrings().

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

• SDBVMat.h
• SDBVMat.cc

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