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GLAST/LAT > DAQ and FSW > FSW > Doxygen Index > GRBP / V0-4-2

Constituent: grbpsiu     Tag: linux-gcc

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GRBP_cluster.h File Reference

Interface to the clustering portion of the GRB algorithm. More...

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Data Structures
struct	_GRBP_neighborInfo
	The information about the neighboring photons. More...
struct	_GRBP_neighborList
	Maintains a list of photons that are close to some other photon. More...
struct	_GRBP_cluster
Typedefs
typedef _GRBP_photon	GRBP_photon
	Typedef struct _GRBP_photon.
typedef _GRBP_cluster	GRBP_cluster
typedef _GRBP_clusterPrms	GRBP_clusterPrms
	Typedef for struct _GRBP_clusterPrms.
typedef _GRBP_probabilityLogs	GRBP_probabilityLogs
typedef _GRBP_neighborInfo	GRBP_neighborInfo
	Typedef struct _GRBP_neighborInfo.
typedef _GRBP_neighborList	GRBP_neighborList
	Typedef struct _GRBP_neighborList.
Functions
int	GRBP_clusterGammasGather (const GRBP_cluster *clusters, int beg, int end, int max, const unsigned short int *list, int cnt, double contrast, double threshold, unsigned int *bl, GRBP_probabilityLogs *plog_max)
	Scans the circular list of clusters looking for clusters that are over the probability threshold. A list of photons that are members of such clusters is accumulated (in the form of a bit list) and returned in masks.

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Detailed Description

Interface to the clustering portion of the GRB algorithm.

Author:

JJRussell - russell@slac.stanford.edu

   CVS $Id: GRBP_cluster.h,v 1.4 2007/08/10 20:47:53 russell Exp $

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Function Documentation

int GRBP_clusterGammasGather (  const GRBP_cluster *  clusters, int  beg, int  end, int  max, const unsigned short int *  list, int  cnt, double  contrast, double  threshold, unsigned int *  bl, GRBP_probabilityLogs *  plog_max )

Scans the circular list of clusters looking for clusters that are over the probability threshold. A list of photons that are members of such clusters is accumulated (in the form of a bit list) and returned in masks. Returns: The number of masks that need to be scanned Parameters: clusters  The circular list of clusters beg  The index of the first cluster to consider end  The index of the last cluster to consider. Note that this is the actual last cluster, not one past it. max  The number of clusters in the circular list. This determines the wrap-around point list  A list of all clusters, by index, that have had photons added to their neighbor list. These are the only clusters that need to be checked, and of these only those in the beg,end interval are valid for the window being considered. This list is ordered from oldest to newest photon. cnt  The number of indices in list. contrast  The temporal contrast factor. The log of the temporal probability will be multiplied by this factor when computing the sum of the spatial and temporal probabilities threshold  The cluster threshold bl  The bit list to fill in with the gammas plog_max  Argument to receive the logs of spatial and temporal probabilities from the cluster with the largest total probability. This is filled if and only if the total probability exceeds threshold.

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