DGtal::PointListReader< TPoint > Struct Template Reference

Aim: Implements method to read a set of points represented in each line of a file. More...

#include <DGtal/io/readers/PointListReader.h>

Static Public Member Functions
static std::vector< TPoint >	getPointsFromInputStream (std::istream &in, std::vector< unsigned int > aVectPosition=std::vector< unsigned int >())
static std::vector< TPoint >	getPointsFromFile (const std::string &filename, std::vector< unsigned int > aVectPosition=std::vector< unsigned int >())
static std::vector< std::vector< TPoint > >	getPolygonsFromFile (const std::string &filename)
static std::vector< std::vector< TPoint > >	getPolygonsFromInputStream (std::istream &in)
template<typename TInteger >
static std::vector< FreemanChain< TInteger > >	getFreemanChainsFromFile (const std::string &filename)

Detailed Description

template<typename TPoint>
struct DGtal::PointListReader< TPoint >

Aim: Implements method to read a set of points represented in each line of a file.

Description of class 'PointListReader'

The main method to read a set of points as a simple format where each elements is represented in a single line. Blank line or line beginning with "#" are skipped.

Simple example:

#include "DGtal/helpers/StdDefs.h"
.... 
string filename= "testFile.dat"; 
vector<Z2i::Point> vectPoints = PointListReader<Z2i::Point>::getPointsFromFile(filename);

and you can specifying the point position:

vector<unsigned int> vIndice;
vIndice.push_back(1); // select for X coordinate the second position number of the line.
vIndice.push_back(2); // select for Y coordinate the third position number of the line.
vector<Z2i::Point> vectPoints = PointListReader<Z2i::Point>::getPointsFromFile(filename,vectPos);

See also

testPointListReader.cpp

Examples

geometry/curves/exampleAlphaThickSegmentNoisy.cpp, geometry/curves/exampleAlphaThickSegmentTgtCover.cpp, geometry/curves/exampleArithDSS3d.cpp, geometry/curves/greedyAlphaThickDecomposition.cpp, geometry/volumes/dvcm-2d.cpp, and io/digitalSetFromPointList.cpp.

Definition at line 84 of file PointListReader.h.

Member Function Documentation

getFreemanChainsFromFile()

template<typename TPoint >

template<typename TInteger >

static std::vector< FreemanChain< TInteger > > DGtal::PointListReader< TPoint >::getFreemanChainsFromFile ( const std::string &  filename )

static

Main method to FreemanChain contours. Each line of the file should represent a FreemanChain

Parameters

[in]

filename

the input filename

Returns

the vector containing the set of FreemanChain.

getPointsFromFile()

template<typename TPoint >

static std::vector< TPoint > DGtal::PointListReader< TPoint >::getPointsFromFile ( const std::string &  filename, std::vector< unsigned int >  aVectPosition = std::vector< unsigned int >()  )

static

Main method to import a vector containing a list of points defined in a file where each line defines a point. Blank line or line beginning with "#" are skipped.

Parameters

filename	a filename
aVectPosition	used to specify the position of indices of value points (optional: default set to 0,..,dimension)

Returns

a vector containing the set of points.

Referenced by main(), testAlphaThickSegmentComputerFloatingPointContour(), testAlphaThickSegmentConvexHullAndBox(), testMultiWidth(), and testPointListReader().

getPointsFromInputStream()

template<typename TPoint >

static std::vector< TPoint > DGtal::PointListReader< TPoint >::getPointsFromInputStream ( std::istream &  in, std::vector< unsigned int >  aVectPosition = std::vector< unsigned int >()  )

static

Main method to import a vector containing a list of points defined in a file where each line defines a point. Blank line or line beginning with "#" are skipped.

Parameters

in	the input stream.
aVectPosition	used to specify the position of indices of value points (default set to 0,..,dimension).

Returns

a vector containing the set of points.

getPolygonsFromFile()

template<typename TPoint >

static std::vector< std::vector< TPoint > > DGtal::PointListReader< TPoint >::getPolygonsFromFile ( const std::string &  filename )

static

Import a vector containing all polygons defined on each line of a given file.

Parameters

[in]

filename

input filename

Returns

a vector containing the vector of polygons.

Referenced by testPointListReader().

getPolygonsFromInputStream()

template<typename TPoint >

static std::vector< std::vector< TPoint > > DGtal::PointListReader< TPoint >::getPolygonsFromInputStream ( std::istream &  in )

static

Import a vector containing all polygons defined on each line of a given istream.

Parameters

in	the input stream.

Returns

a vector containing the vector of polygons.

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

• PointListReader.h