teca_component_area_filter Class Reference

An algorithm that applies a mask based on connected component area. More...

#include <teca_component_area_filter.h>

Inheritance diagram for teca_component_area_filter:

Collaboration diagram for teca_component_area_filter:

Public Member Functions
std::shared_ptr< teca_component_area_filter >	shared_from_this ()
std::shared_ptr< teca_component_area_filter const >	shared_from_this () const
	teca_component_area_filter (const teca_component_area_filter &src)=delete
	teca_component_area_filter (teca_component_area_filter &&src)=delete
teca_component_area_filter &	operator= (const teca_component_area_filter &src)=delete
teca_component_area_filter &	operator= (teca_component_area_filter &&src)=delete
const char *	get_class_name () const override
component_variable
void	set_component_variable (const std::string &v)
const std::string &	get_component_variable () const
number_of_components_key
set the name of the dataset metadata key holding the number of components left after the filter is applied
void	set_number_of_components_key (const std::string &v)
const std::string &	get_number_of_components_key () const
component_ids_key
set the name of the dataset metadata key holding connected component label ids
void	set_component_ids_key (const std::string &v)
const std::string &	get_component_ids_key () const
component_area_key
set the name of the dataset metadata key holding connected component areas
void	set_component_area_key (const std::string &v)
const std::string &	get_component_area_key () const
mask_value
set this to be the default label id for the filtered out component areas. This will typically correspond to the label used for cells outside of the segmentation (i.e. in the background). One can use this property to override the mask value. The default mask value is '-1' which results in aquiring the mask value from input metadata key background_id. Use -2 to specify no background label.
void	set_mask_value (const long long &v)
const long long &	get_mask_value () const
low_area_threshold
set the range identifying values to area filter. The defaults are (-infinity, infinity].
void	set_low_area_threshold (const double &v)
const double &	get_low_area_threshold () const
high_area_threshold
void	set_high_area_threshold (const double &v)
const double &	get_high_area_threshold () const
variable_postfix
a string to be appended to the name of the output variable. setting this to an empty string will result in the masked array replacing the input array in the output. default is an empty string ""
void	set_variable_postfix (const std::string &v)
const std::string &	get_variable_postfix () const
contiguous_component_ids
set this only if you know for certain that label ids are contiguous and start at 0. this enables use of a faster implementation.
void	set_contiguous_component_ids (const int &v)
const int &	get_contiguous_component_ids () const
Public Member Functions inherited from teca_algorithm
	teca_algorithm (const teca_algorithm &src)=delete
	teca_algorithm (teca_algorithm &&src)=delete
teca_algorithm &	operator= (const teca_algorithm &src)=delete
teca_algorithm &	operator= (teca_algorithm &&src)=delete
void	set_communicator (MPI_Comm comm)
MPI_Comm	get_communicator ()
	get the active communicator More...
virtual teca_algorithm_output_port	get_output_port (unsigned int port=0)
void	set_input_connection (const teca_algorithm_output_port &port)
	set an input to this algorithm More...
virtual void	set_input_connection (unsigned int id, const teca_algorithm_output_port &port)
	set an input to this algorithm More...
virtual void	remove_input_connection (unsigned int id)
	remove input connections More...
void	clear_input_connections ()
	remove all input connections More...
const_p_teca_dataset	get_output_data (unsigned int port=0)
void	pop_cache (unsigned int port=0, int top=0)
void	set_cache_size (unsigned int n)
	set the cache size. the default is 1. (threadsafe) More...
virtual int	update ()
	execute the pipeline from this instance up. More...
virtual int	update (unsigned int port)
	execute the pipeline from this instance up. More...
virtual teca_metadata	update_metadata (unsigned int port=0)
	get meta data considering this instance up. More...
void	set_executive (p_teca_algorithm_executive exe)
	set the executive More...
p_teca_algorithm_executive	get_executive ()
	get the executive More...
virtual void	to_stream (std::ostream &s) const
virtual void	from_stream (std::istream &s)
	deserialize from the stream. More...
void	set_verbose (const int &v)
const int &	get_verbose () const

Static Public Member Functions
static p_teca_component_area_filter	New ()

Additional Inherited Members
Protected Member Functions inherited from teca_algorithm
void	set_number_of_input_connections (unsigned int n)
void	set_number_of_output_ports (unsigned int n)
virtual void	set_modified ()
void	set_modified (unsigned int port)
	an overload to set_modified by port More...
virtual teca_metadata	get_cache_key (unsigned int port, const teca_metadata &request) const
virtual teca_metadata	get_output_metadata (teca_algorithm_output_port &current)
virtual const_p_teca_dataset	request_data (teca_algorithm_output_port &port, const teca_metadata &request)
virtual int	validate_cache (teca_algorithm_output_port &current)
virtual void	clear_modified (teca_algorithm_output_port current)
const_p_teca_dataset	get_output_data (unsigned int port, const teca_metadata &request)
int	cache_output_data (unsigned int port, const teca_metadata &request, const_p_teca_dataset &data)
void	clear_cache (unsigned int port)
	clear the cache on the given output port More...
unsigned int	get_number_of_input_connections ()
	get the number of input connections More...
teca_algorithm_output_port &	get_input_connection (unsigned int i)
void	clear_modified (unsigned int port)
	clear the modified flag on the i'th output More...
int	get_modified (unsigned int port) const
	return the output port's modified flag value More...
Protected Attributes inherited from teca_algorithm
int	verbose

Detailed Description

An algorithm that applies a mask based on connected component area.

The filter masks the regions identified by an integer label that are outside the range bracketed by the 'low_area_threshold' and 'high_area_threshold' properties. These default to -inf and +inf, hence by default no regions are masked. The mask value may be set by the 'mask_value' property which defaults to '0'.

The filter expects an integer field containing connected component labels. This field is named by the 'component_variable' property. Additionally a list of label ids and coresponding areas is expected in the dataset metadata. The properties 'component_ids_key' and 'component_area_key' identify the latter metadata. These default to the names used by the 'teca_2d_component_area' algotihm, 'component_ids' and 'component_area'.

Applying the 'teca_connected_component' algorithm followed by the 'teca_2d_component_area' algorithm is the easiest way to get valid inputs for the 'component_area_filter'.

The filtered coomponent ids are put in the output dataset along with the updated lists of valid component ids and component area metadata keys. By default the filtered data replaces the input data in the output. However, the input data can be retained by setting the 'variable_postfix' property, a string that will be appended to the names of the filtered component array and metadata keys.

Member Function Documentation

get_class_name()

const char* teca_component_area_filter::get_class_name ( ) const

inlineoverridevirtual

returns the name of the class

Implements teca_algorithm.

get_component_area_key()

const std::string& teca_component_area_filter::get_component_area_key ( ) const

inline

Get the value of the component_area_key algorithm property

get_component_ids_key()

const std::string& teca_component_area_filter::get_component_ids_key ( ) const

inline

Get the value of the component_ids_key algorithm property

get_component_variable()

const std::string& teca_component_area_filter::get_component_variable ( ) const

inline

Get the value of the component_variable algorithm property

get_contiguous_component_ids()

const int& teca_component_area_filter::get_contiguous_component_ids ( ) const

inline

Get the value of the contiguous_component_ids algorithm property

get_high_area_threshold()

const double& teca_component_area_filter::get_high_area_threshold ( ) const

inline

Get the value of the high_area_threshold algorithm property

get_low_area_threshold()

const double& teca_component_area_filter::get_low_area_threshold ( ) const

inline

Get the value of the low_area_threshold algorithm property

get_mask_value()

const long long& teca_component_area_filter::get_mask_value ( ) const

inline

Get the value of the mask_value algorithm property

get_number_of_components_key()

const std::string& teca_component_area_filter::get_number_of_components_key ( ) const

inline

Get the value of the number_of_components_key algorithm property

get_variable_postfix()

const std::string& teca_component_area_filter::get_variable_postfix ( ) const

inline

Get the value of the variable_postfix algorithm property

New()

static p_teca_component_area_filter teca_component_area_filter::New ( )

inlinestatic

Returns an instance of teca_component_area_filter

set_component_area_key()

void teca_component_area_filter::set_component_area_key ( const std::string &  v )

inline

Set the value of the component_area_key algorithm property

set_component_ids_key()

void teca_component_area_filter::set_component_ids_key ( const std::string &  v )

inline

Set the value of the component_ids_key algorithm property

set_component_variable()

void teca_component_area_filter::set_component_variable ( const std::string &  v )

inline

Set the value of the component_variable algorithm property

set_contiguous_component_ids()

void teca_component_area_filter::set_contiguous_component_ids ( const int &  v )

inline

Set the value of the contiguous_component_ids algorithm property

set_high_area_threshold()

void teca_component_area_filter::set_high_area_threshold ( const double &  v )

inline

Set the value of the high_area_threshold algorithm property

set_low_area_threshold()

void teca_component_area_filter::set_low_area_threshold ( const double &  v )

inline

Set the value of the low_area_threshold algorithm property

set_mask_value()

void teca_component_area_filter::set_mask_value ( const long long &  v )

inline

Set the value of the mask_value algorithm property

set_number_of_components_key()

void teca_component_area_filter::set_number_of_components_key ( const std::string &  v )

inline

Set the value of the number_of_components_key algorithm property

set_variable_postfix()

void teca_component_area_filter::set_variable_postfix ( const std::string &  v )

inline

Set the value of the variable_postfix algorithm property

shared_from_this() [1/2]

std::shared_ptr< teca_component_area_filter > teca_component_area_filter::shared_from_this ( )

inline

Enables the static constructor

shared_from_this() [2/2]

std::shared_ptr< teca_component_area_filter const> teca_component_area_filter::shared_from_this ( ) const

inline

Enables the static constructor

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

• develop/alg/teca_component_area_filter.h