|
Matrix Class Function Manual (V-Z) |
|
|
Matrix Class Function Manual (V-Z) |
Purpose
To determine the value of the variance of all elements in a matrix.
Class
Matrix, Matrix_flt, Matrix_int, Matrix_sht, Matrix_uch, Matrix_bln
Usage
{double} ret = object.VAR()
Example:
|
->A = [1 2 3; 4 5 6; 7 8 9] ->B = A.var() ->print B 7.50000 |
See also (class function)
max, min, mean, sd
Purpose
To convert to a VecIdIndx object. Each row in a matrix is considered an IdIndx object. Thus, it must have at least 4 columns, where the 1st column is to be ID, the 2nd is row number, the 3r is column number and the 4th is standard deviation.
Class
Matrix
Usage
{double} ret = object.VECIDINDX()
Example:
|
->a = [1 2 3 4; 5
6 7 8] |
See also (class function)
vecidpt1d, vecidpt2d, vecidpt3d, vecindx, vecpt2d, vecpt3d
Purpose
To convert to a VecIdPt1D object. Each row in a matrix is considered a IdPt1D object. Thus, it must have at least 3 columns, where the 1st column is to be ID, the 2nd is x coordinate and the 3rd is standard deviation.
Class
Matrix
Usage
{double} ret = object.VECIDPT1D()
Example:
|
->a = [ 1 2 3; 4
5 6] |
See also (class function)
vecidindx, vecidpt2d, vecidpt3d, vecindx, vecpt2d, vecpt3d
Purpose
To convert to a VecIdPt2D object. Each row in a matrix is considered a IdPt2D object. Thus, it must have at least 4 columns, where the 1st column is to be ID, the 2nd is x coordinate, the 3rd is y coordinate, and the 4th is standard deviation.
Class
Matrix
Usage
{double} ret = object.VECIDPT2D()
Example:
|
->a = [ 1 2 3 4 ;
5 6 7 8 ] |
See also (class function)
vecidpt1d, vecidindx, vecidpt3d, vecindx, vecpt2d, vecpt3d
Purpose
To convert to a VecIdPt3D object. Each row in a matrix is considered a IdPt3D object. Thus, it must have at least 5 columns, where the 1st column is to be ID, the 2nd is x coordinate, the 3rd is y coordinate, the 4th is z coordinate, and the 5th is standard deviation.
Class
Matrix
Usage
{double} ret = object.VECIDPT3D()
Example:
|
->a = [ 1 2 3 4 5
; 6 7 8 9 10] |
See also (class function)
vecidpt1d, vecidpt2d, vecidindx, vecindx, vecpt2d, vecpt3d
Purpose
To convert to a VecIndx object. Each row in a matrix is considered an Indx object. Thus, it must have at least 2 columns, where the 1st column is row number, the 2nd is column number.
Class
Matrix
Usage
{double} ret = object.VECINDX()
Example:
|
->a = [ 1 2 ; 3
4] |
See also (class function)
vecidpt1d, vecidpt2d, vecidpt3d, vecidindx, vecpt2d, vecpt3d
Purpose
To convert to a VecPt2D object. Each row in a matrix is considered a Pt2D object. Thus, it must have at least 2 columns, where the 1st column is x coordinate and the 2nd is y coordinate.
Class
Matrix
Usage
{double} ret = object.VECPT2D()
Example:
|
->a = [ 1 2 ; 3
4] |
See also (class function)
vecidpt1d, vecidpt2d, vecidpt3d, vecindx, vecidindx, vecpt3d
Purpose
To convert to a VecPt3D object. Each row in a matrix is considered a Pt3D object. Thus, it must have at least 3 columns, where the 1st column is x coordinate, the 2nd is y coordinate, and the 3rd is z coordinate.
Class
Matrix
Usage
{double} ret = object.VECPT3D()
Example:
|
->a = [ 1 2 3 ; 4
5 6 ] |
See also (class function)
vecidpt1d, vecidpt2d, vecidpt3d, vecindx, vecpt2d, vecidindx
VECSTR
Purpose
To convert to a String Vector (VecStr) object. Noobeed will take only the first column and makes each element to a string and stores in a vector.
Class
Matrix
Usage
{VecStr} ret = object.VECSTR({double} argm1)
argm1 = number of decimal points (default = current precision set by command set precision)
Example:
|
->a = [ 1 2 3; 4 5 6; 7 8
9] |
See also (class function)
global function double2str int2str
VECTOR
Purpose
To convert to a Vector object. Each element in a matrix is considered an element in a Vector object. Thus the size of the vector is equal to the total number of elements in a matrix.
Class
Matrix, Matrix_flt, Matrix_int, Matrix_sht, Matrix_uch, Matrix_bln
Usage
{double} ret = object.VECTOR()
Example:
|
->a = [ 1 2 3 ; 4
5 6 ] |
See also (class function)
vecidpt1d, vecidpt2d, vecidpt3d, vecindx, vecpt2d, vecpt3d
Purpose
To virtually load a Matrix object, saved as Noobeed format. The document file is read but not thedata file. The function simply opens the data file and waits for the user to request data. This function is particuilarily useful when the data file is large and the user doen not want to do load the data into memory.
Please note that only a limited set of functions is available for a virtually loaded matrix. Function supported in a vload matrix are goget, goset, gosetmat, window, skip, stretch, stretchfix, min, max, mean, sd, var, and those functions that do not require contents in the data file, such as nrow, ncol, rc2no, no2rc etc.
When finish using the vload object, use the class function close() to close the data file.
Class
Matrix, Matrix_flt, Matrix_int, Matrix_sht, Matrix_uch, Matrix_bln
Usage
{void} object.VLOAD({String} argm1, [{String} argm2])
argm1 = file name for the documentation file (default extension is ".txt")
argm2 = file name for the data file
(default file name is same file name as argm1 with an extension ".raw")
Example:
|
->A = Matrix() ->A.vload("my_matrix") -> |
See also (class function)
loadtif, loadbmp, loadasc, loadbin, save, savetif, savebmp, saveasc, savebin
Purpose
To cut a window out of a matrix.
Class
Matrix, Matrix_flt, Matrix_int, Matrix_sht, Matrix_uch, Matrix_bln
Usage
For class Matrix
{Matrix} ret = object.WINDOW({int} argm1, {int} argm2, {int} argm3, {int} argm4)
For class Matrix_flt
{Matrix_flt} ret = object.WINDOW({int} argm1, {int} argm2, {int} argm3, {int} argm4)
For class Matrix_int
{Matrix_int} ret = object.WINDOW({int} argm1, {int} argm2, {int} argm3, {int} argm4)
For class Matrix_sht
{Matrix_sht} ret = object.WINDOW({int} argm1, {int} argm2, {int} argm3, {int} argm4)
For class Matrix_uch
{Matrix_uch} ret = object.WINDOW({int} argm1, {int} argm2, {int} argm3, {int} argm4)
For class Matrix_bln
{Matrix_bln} ret = object.WINDOW({int} argm1, {int} argm2, {int} argm3, {int} argm4)
argm1 = first row number to be cut
argm2 = last row number to be cut
argm3 = first column number to be cut
argm4 = last column number to be cut
Example:
|
->a = [ 1 2 3; 4
5 6; 7 8 9] |
See also (class function)
setwindow, skip