riset (85) tutorial (68) python (61) tajuk (30) matlab (19) data minning (7) java (6) C# (5) kriptografi (4) mysql (3) Steganografi (1) buku terbit (1) optimasi (1) pyQT (1) web service (1)

## Jumat, 26 Desember 2014

### Library Masking Array di C#

Masalah masking array difunctional programming sangat mudah, sebagai contoh pada matlab dan Net (C#)

## Matlab

``````
clc;clear all;close all;
a = [1 2 3;4 5 6]
b = [7 8 9;10 11 12]

c1 = [a;b] % append baris
c2 = [a b] % append kolom

c3 = c1(1:2,1:2) % for selection

c4 = c1(1:2,:) %for selection

c5 = c1;
c5(c5>=3) = 10 %for where
c6 = zeros(size(c1,1),size(c1,2));
c6(1:2,:) =  c1(1:2,:) %copy
```
```

## Perhatikan hasil nya

``````

a =

1     2     3
4     5     6

b =

7     8     9
10    11    12

c1 =

1     2     3
4     5     6
7     8     9
10    11    12

c2 =

1     2     3     7     8     9
4     5     6    10    11    12

c3 =

1     2
4     5

c4 =

1     2     3
4     5     6

c5 =

1     2    10
10    10    10
10    10    10
10    10    10

c6 =

1     2     3
4     5     6
0     0     0
0     0     0

```
```

## C# / NetPlafform

Kamu bisa bisa melakukan masking array dengan mudah di C# yaitu dengan menggunakan class NumP

``````double [,] a = new double[,]{{1,2,3},{4,5,6}};
double [,] b = new double[,]{{7,8,9},{10,11,12}};
double [,] c = new double[4,3];
double [,] c1 = NumP.Append(a,b,NumP.HV.Row);
double [,] c2 = NumP.Append(a,b,NumP.HV.Column);
double [,] c3 = NumP.ForCopy(c1,0,1,0,1);
double [,] c4 = NumP.ForCopy(c1,0,1,0,c1.GetLength(1)-1);
double nilaiPengganti = 10;
double [,] c5 = NumP.Where(c1,NumP.WHERE.GreaterOrEqual,3,nilaiPengganti);
double [,] c6 = new double[c1.GetLength(0),c1.GetLength(1)];
c6 = NumP.ForCopy(c1,c6,0,1,0,c1.GetLength(1)-1);
NumP.PrintConsole(c1);
NumP.PrintConsole(c2);
NumP.PrintConsole(c3);
NumP.PrintConsole(c4);
NumP.PrintConsole(c5);
NumP.PrintConsole(c6);
``````