MatrixVector::mat Class Reference

Classes
class	Loader
	Inspired from Eigen Lib. More...

Public Member Functions
	mat (const mat &m)
	mat (const int col, const int row)
	mat (vector< vector< float >> v2)
	mat (const int col, const int row, vector< float > v)
Loader	operator<< (float x)
vec	getVec (int n)
row	getRow (int n)
	Get an index row from a matrix.
vec	operator* (vec &v)
mat	operator* (mat &m)
mat	operator= (const mat &m)
bool	operator== (const mat &m)
mat	operator+ (mat m)
mat	operator- (const mat &m)
mat	operator/ (float f)
mat	operator* (float f)
mat	removeRow (int index)
mat	removeVec (int index)
	Get an index Column or Vector from a matrix.
mat	insertVecNext (int index, vec v)
	Add vector to the right of index, Should I change the name to insertVecRight()
mat	insertVecPrevious (int index, vec v)
mat	clone ()
mat	concat (mat m)
mat	rowMultiScala (int index, float f)
mat	vecMultiScala (int index, float f)
mat	swapRow (int inx1, int inx2)
	Add test cases.
void	geneMat (int init)
	Generate matrix from init to ncol*nrow. More...
void	geneMatRandom (int fst, int snd)
	Generate a random matrix in interval and [fst, snd) More...
void	print ()
	print the matrix More...
string	toStr ()
void	print2 ()
void	zero ()
void	identity ()
bool	isId ()
bool	isZero ()
float	det ()
mat	id ()
mat	subMatrix (int colIndex, int rowIndex)
	/Library/WebServer/Documents/zsurface/pdf/submatrix_get.pdf 1 2 3 subMatrix(1, 0) => 4 5 6 4 5 6 More...
mat	transpose ()
	tranpose matrix More...
mat	block (int colIndex, int clen, int rowIndex, int rlen)
	subblock of a matrix More...
mat	take (int len)
	Take first n columns from a matrix. More...
mat	drop (int len)
	Drop first n columns from a matrix. More...
mat	init ()
	Drop the last column from a matrix \[ \begin{bmatrix} a & b & c \\ c & d & e \\ f & g & h \end{bmatrix} \rightarrow \begin{bmatrix} a & b \\ c & d \\ f & g \end{bmatrix} \] .
mat	tail ()
	Drop the first column from a matrix. \[ \begin{bmatrix} a & b & c \\ c & d & e \\ f & g & h \end{bmatrix} \rightarrow \begin{bmatrix} b & c \\ d & e \\ h & h \end{bmatrix} \] .

Public Attributes
int	ncol
int	nrow
float **	arr

Member Function Documentation

block()

mat MatrixVector::mat::block	(	int	cIndex,
		int	clen,
		int	rIndex,
		int	rlen
	)

subblock of a matrix

• [..) + [..]
• Idea is from substring(index, n = inde + 1)

  "abc".substring(0, 2) => "ab"
  "abc".substring(2, 3) => "c"

drop()

mat MatrixVector::mat::drop

(

int

len

)

Drop first n columns from a matrix.

- mat m(nrow, nrow)
- drop(nrow) => m(ncol, 0)

geneMat()

void MatrixVector::mat::geneMat

(

int

init

)

Generate matrix from init to ncol*nrow.

init = 1, ncol = 2, nrow = 3
1 2 3
3 4 5

geneMatRandom()

void MatrixVector::mat::geneMatRandom	(	int	fst,
		int	snd
	)

Generate a random matrix in interval and [fst, snd)

init = 1, ncol = 2, nrow = 3
1 2 3
3 4 5

geneMatRandom(1, 10) => [1, 10)

getVec()

vec MatrixVector::mat::getVec

(

int

n

)

get 0 <= n <= nrow vector or column from matrix

print()

void MatrixVector::mat::print

(

)

print the matrix

int ncol = 2;
int nrow = 3;
mat m(ncol, nrow);
m.geneMat(1);
for(int i=0; i< ncol; i++){
    for(int j=0; j< nrow; j++){
        int indent = 10;
        printf("[%*f]", 10, m.arr[i][j]);
    }
    printf("\n");
}
m.print();

subMatrix()

mat MatrixVector::mat::subMatrix	(	int	colIndex,
		int	rowIndex
	)

/Library/WebServer/Documents/zsurface/pdf/submatrix_get.pdf 1 2 3 subMatrix(1, 0) => 4 5 6 4 5 6

subblock matrix, submatrix 1 2 3 3 4 5 block(1, 1)=> 4 5 6 7 8 7 8

take()

mat MatrixVector::mat::take

(

int

len

)

Take first n columns from a matrix.

mat m(nrow, nrow)
take(0) => m(ncol, 0)

transpose()

mat MatrixVector::mat::transpose

(

)

tranpose matrix

1 2 3 => 1 4 4 5 6 2 5 3 6

--------------------------------------------------------------------------------
1 2 3    1 4
4 5 6 => 2 5
         3 6
--------------------------------------------------------------------------------

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

• AronLib.h