Header file containing the exported API for the ProbabilityDensity Module. More...
Prototypes | |
pdf1D_t * | XLALCreateSingularPDF1D (REAL8 x0) |
Creator function for a 'singular' 1D pdf, containing a single value with certainty, ie P(x0)=1, and P(x!=x0)=0. More... | |
pdf1D_t * | XLALCreateUniformPDF1D (REAL8 xMin, REAL8 xMax) |
Creator function for a uniform 1D pdf over [xMin, xMax]. More... | |
pdf1D_t * | XLALCreateDiscretePDF1D (REAL8 xMin, REAL8 xMax, UINT4 numBins) |
Creator function for a generic discrete 1D pdf over [xMin, xMax], discretized into numBins bins. More... | |
REAL8 | XLALDrawFromPDF1D (pdf1D_t *pdf, const gsl_rng *rng) |
Function to generate random samples drawn from the given pdf(x) NOTE: if the 'sampling' field is NULL, it will be set the first call to this function. More... | |
int | XLALCheckValidPDF1D (const pdf1D_t *pdf) |
Checks internal consistency of pdf1D object. More... | |
int | XLALNormalizePDF1D (pdf1D_t *pdf) |
Method to normalize the given pdf1D. More... | |
REAL8 | XLALFindModeOfPDF1D (const pdf1D_t *pdf) |
Find the 'mode' of the probabilty distribution, ie. More... | |
int | XLALOutputPDF1D_to_fp (FILE *fp, const pdf1D_t *pdf, const char *name) |
Function to write a pdf1D to given filepointer fp. More... | |
void | XLALDestroyPDF1D (pdf1D_t *pdf) |
Destructor function for 1-D pdf. More... | |
Header file containing the exported API for the ProbabilityDensity Module.
Definition in file ProbabilityDensity.h.
Go to the source code of this file.
Data Structures | |
struct | pdf1D_t |
Encode a pdf(x) as a discretized function probDens[i] = pdf( x[i] ) with user-specified bins xBin[i]. More... | |
pdf1D_t* XLALCreateSingularPDF1D | ( | REAL8 | x0 | ) |
Creator function for a 'singular' 1D pdf, containing a single value with certainty, ie P(x0)=1, and P(x!=x0)=0.
This is encoded as an xTics array containing just one value: x0, and prob=NULL, sampling=NULL
x0 | domain of pdf is a single point: x0 |
Definition at line 226 of file ProbabilityDensity.c.
Creator function for a uniform 1D pdf over [xMin, xMax].
This is encoded as an xTics array containing just two values: x[0]=xMin, x[1]=xMax, and prob=NULL, sampling=NULL {not required to draw from this pdf}
xMin | lower boundary of domain interval |
xMax | upper boundary of domain interval |
Definition at line 256 of file ProbabilityDensity.c.
Creator function for a generic discrete 1D pdf over [xMin, xMax], discretized into numBins bins.
NOTE: generates a uniform sampling of the domain [xMin, xMax] in numBins NOTE2: returns the P[i] array 'prob' initialized to 0, so after calling this function the user still needs to feed in the correct values for the probabilities P[i] of x in [x[i],x[i+1]]
xMin | lower boundary of domain interval |
xMax | upper boundary of domain interval |
numBins | number of bins to discretize PDF into |
Definition at line 296 of file ProbabilityDensity.c.
Function to generate random samples drawn from the given pdf(x) NOTE: if the 'sampling' field is NULL, it will be set the first call to this function.
[in] | probability density to sample from | |
rng | random-number generator |
Definition at line 59 of file ProbabilityDensity.c.
Checks internal consistency of pdf1D object.
If lalDebugLevel > 0, also checks normalization of pdf if it claims to be normalized.
Return: XLAL_SUCCESS if pdf seems OK, XLAL-error otherwise
Definition at line 130 of file ProbabilityDensity.c.
int XLALNormalizePDF1D | ( | pdf1D_t * | ) |
Method to normalize the given pdf1D.
Only does something if necessary, ie if pdf isn't normalized already
Definition at line 352 of file ProbabilityDensity.c.
Find the 'mode' of the probabilty distribution, ie.
the value x at which the pdf has its maximum.
Note1: We return the center-value of the discrete 'bin' containing the maximum of the distribution 'pdf'. (in particular, for an explicitly uniform distribution (2 tics, probDens=NULL) we return the mid-point of the domain).
Note2: If the mode is not unique, we return the first (ie 'leftmost') value of x.
Definition at line 495 of file ProbabilityDensity.c.
Function to write a pdf1D to given filepointer fp.
Writes the pdf in octave format as a 2xN matrix, containing values { xtics[i], pdf[i] }
fp | output file-pointer to write into [append] |
input pdf [need not be normalized] | |
name | octave variable-name to use in output (default = 'pdf' if NULL) |
Definition at line 406 of file ProbabilityDensity.c.
void XLALDestroyPDF1D | ( | pdf1D_t * | ) |
Destructor function for 1-D pdf.
Definition at line 195 of file ProbabilityDensity.c.