Creating a Db structure

Functions
static Db *	gstlrn::Db::create ()
static Db *	gstlrn::Db::createFromNF (const String &NFFilename, bool verbose=true)
static Db *	gstlrn::Db::createFromSamples (Id nech, const ELoadBy &order=ELoadBy::fromKey("SAMPLE"), const 1 &tab=1(), const VectorString &names=VectorString(), const VectorString &locatorNames=VectorString(), bool flagAddSampleRank=true)
static Db *	gstlrn::Db::createFromCSV (const String &filename, const CSVformat &csv=CSVformat(), bool verbose=false, Id ncol_max=-1, Id nrow_max=-1, bool flagAddSampleRank=true)
static Db *	gstlrn::Db::createFromBox (Id nech, const 1 &coormin, const 1 &coormax, Id seed=43241, bool flag_exact=true, bool flag_repulsion=false, double range=0., double beta=0., double extend=0., bool flagAddSampleRank=true)
static Db *	gstlrn::Db::createFromOnePoint (const 1 &tab=1(), bool flagAddSampleRank=true)
static Db *	gstlrn::Db::createSamplingDb (const Db *dbin, double proportion=0., Id number=0, const VectorString &names=VectorString(), Id seed=23241, bool verbose=false, bool flagAddSampleRank=true)
static Db *	gstlrn::Db::createFromDbGrid (Id nech, DbGrid *dbgrid, Id seed=432423, bool flag_exact=true, bool flag_repulsion=false, double range=0., double beta=0., bool flagAddSampleRank=true)
static Db *	gstlrn::Db::createReduce (const Db *dbin, const VectorString &names=VectorString(), const 1 &ranks=1(), bool verbose=false)
static Db *	gstlrn::Db::createFillRandom (Id ndat, Id ndim=2, Id nvar=1, Id nfex=0, Id ncode=0, double varmax=0., double selRatio=0., const 1 &heteroRatio=1(), const 1 &coormin=1(), const 1 &coormax=1(), Id seed=124234, bool flagAddSampleRank=true)
static Db *	gstlrn::Db::createEmpty (Id ndat, Id ndim=2, Id nvar=1, Id nfex=0, Id ncode=0, bool flagVerr=false, bool flagSel=false, bool flagAddSampleRank=true)
static Db *	gstlrn::Db::createFromGridRandomized (DbGrid *dbgrid, double randperc=0., bool flagAddSampleRank=true)

Detailed Description

All methods enabling to Create a new Db in various conditions.

They all return a pointer to the newly created Db structure.

Function Documentation

create()

Db * gstlrn::Db::create ( )

static

createEmpty()

Db * gstlrn::Db::createEmpty ( Id  ndat, Id  ndim = 2, Id  nvar = 1, Id  nfex = 0, Id  ncode = 0, bool  flagVerr = false, bool  flagSel = false, bool  flagAddSampleRank = true  )

static

createFillRandom()

Db * gstlrn::Db::createFillRandom ( Id  ndat, Id  ndim = 2, Id  nvar = 1, Id  nfex = 0, Id  ncode = 0, double  varmax = 0., double  selRatio = 0., const 1 &  heteroRatio = 1(), const 1 &  coormin = 1(), const 1 &  coormax = 1(), Id  seed = 124234, bool  flagAddSampleRank = true  )

static

Creating a new Db loaded with random values

Parameters

ndat	Number of samples
ndim	Dimension of the space
nvar	Number of variables
nfex	Number of external drift functions
ncode	Number of codes (no code when 0)
varmax	Maximum value for the measurement error
selRatio	Percentage of samples that must be masked off (between 0 and 1)
heteroRatio	Vector of proportions of NA to be generated per variable
coormin	Vector of minima of the rectangle containing data (0s if not defined)
coormax	Vector of maxima of the rectangle containing data (1s if not defined)
seed	Value for the Random Generator seed
flagAddSampleRank	true if the sample rank must be generated

Returns

A pointer to the newly created Db

Remarks

The coordinates are generated uniformly within [0,1] The variance of measurement error is created only if 'varmax' is positive. Then a field is created for each variable. this field is filled with random values uniformly generated in [0, varmax] The external drift values are generated according to Normal distribution.

createFromBox()

Db * gstlrn::Db::createFromBox ( Id  nech, const 1 &  coormin, const 1 &  coormax, Id  seed = 43241, bool  flag_exact = true, bool  flag_repulsion = false, double  range = 0., double  beta = 0., double  extend = 0., bool  flagAddSampleRank = true  )

static

createFromCSV()

Db * gstlrn::Db::createFromCSV ( const String &  filename, const CSVformat &  csv = CSVformat(), bool  verbose = false, Id  ncol_max = -1, Id  nrow_max = -1, bool  flagAddSampleRank = true  )

static

createFromDbGrid()

Db * gstlrn::Db::createFromDbGrid ( Id  nech, DbGrid *  dbgrid, Id  seed = 432423, bool  flag_exact = true, bool  flag_repulsion = false, double  range = 0., double  beta = 0., bool  flagAddSampleRank = true  )

static

Create a new Data Base with points generated at random

Returns

Pointer for the new Db structure

Parameters

[in]	nech	Expected number of samples
[in]	dbgrid	Descriptor of the Db grid parameters
[in]	seed	Seed for the random number generator
[in]	flag_exact	True if the number of samples must not be drawn
[in]	flag_repulsion	True if repulsion is processed
[in]	range	Repulsion range
[in]	beta	Bending coefficient
[in]	flagAddSampleRank	true if the Rank must be generated in the output Db

createFromGridRandomized()

Db * gstlrn::Db::createFromGridRandomized ( DbGrid *  dbgrid, double  randperc = 0., bool  flagAddSampleRank = true  )

static

createFromNF()

Db * gstlrn::Db::createFromNF ( const String &  NFFilename, bool  verbose = true  )

static

createFromOnePoint()

Db * gstlrn::Db::createFromOnePoint ( const 1 &  tab = 1(), bool  flagAddSampleRank = true  )

static

createFromSamples()

Db * gstlrn::Db::createFromSamples ( Id  nech, const ELoadBy &  order = ELoadBy::fromKey("SAMPLE"), const 1 &  tab = 1(), const VectorString &  names = VectorString(), const VectorString &  locatorNames = VectorString(), bool  flagAddSampleRank = true  )

static

createReduce()

Db * gstlrn::Db::createReduce ( const Db *  dbin, const VectorString &  names = VectorString(), const 1 &  ranks = 1(), bool  verbose = false  )

static

createSamplingDb()

Db * gstlrn::Db::createSamplingDb ( const Db *  dbin, double  proportion = 0., Id  number = 0, const VectorString &  names = VectorString(), Id  seed = 23241, bool  verbose = false, bool  flagAddSampleRank = true  )

static