## I want print the matrix, in orginal matrix from but it displays it as a series of coloumns.

### Krishna Prasad Rao (view profile)

on 31 Jan 2013
Accepted Answer by Thorsten

### Thorsten (view profile)

```H_Mat=[1, 0, 1, 0, 1, 0, 1, 0;
```
`       1, 0, 0, 1, 0, 1, 0, 1;`
`       0, 1, 1, 0, 0, 1, 1, 0;`
```       0, 1, 0, 1, 1, 0, 0, 1];
[row,coloumn]=size(H_Mat);
for i = 1:row
for j = 1:coloumn
fprintf (' %d,', H_Mat (i,j));```

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### Thorsten (view profile)

on 1 Feb 2013

It's easy as

```disp(H_Mat)
```

on 1 Feb 2013

It Works thanks!

### Shashank Prasanna (view profile)

Answer by Shashank Prasanna

### Shashank Prasanna (view profile)

on 31 Jan 2013

Try:

```H_Mat=[1, 0, 1, 0, 1, 0, 1, 0; 1, 0, 0, 1, 0, 1, 0, 1; 0, 1, 1, 0, 0, 1, 1, 0; 0, 1, 0, 1, 1, 0, 0, 1];
```
```dlmwrite('test1.txt', H_Mat,'delimiter',' ')
```

### Krishna Prasad Rao (view profile)

on 31 Jan 2013

Actually i miss spelled the question, it gives series of rows as i see, but i want it to print so it looks like a Matrix. Thanks

### Image Analyst (view profile)

Answer by Image Analyst

### Image Analyst (view profile)

on 31 Jan 2013

Perhaps you just need to swap the order of rows and columns in the for loops, and add a new line:

```for j = 1:row
for i = 1:coloumn
fprintf (' %d,', H_Mat (j,i));
end
fprintf ('\n');
end
```

In the command window:

```   1, 0, 1, 0, 1, 0, 1, 0,
1, 0, 0, 1, 0, 1, 0, 1,
0, 1, 1, 0, 0, 1, 1, 0,
0, 1, 0, 1, 1, 0, 0, 1,```

### Krishna Prasad Rao (view profile)

on 1 Feb 2013

I got it now, thanks :)

hey can you please explain me what does this expression mean? W = X(:,p);

the original situation where i use this one is

function Y = SecondStage(H_Mat,V,X,Z)

```    Y = zeros(size(H_Mat));
for q = 1:4
for p = 1:8
W = X(:,p);
W(q)=[];
W = sum(W);
%update every node through variables.
Y(q,p)=H_Mat(q,p)*(V(p)+W);
end
end```
Image Analyst

### Image Analyst (view profile)

on 1 Feb 2013

The colon, when used where you'd normally use an index, means "all". So in your case, where the colon is in the first index, which corresponds to the "rows" index, the colon mean "all rows". So X(:,p) means "all rows in column #p." Basically it extracts out the pth column from the matrix into a vertical column vector.

### Krishna Prasad Rao (view profile)

on 5 Feb 2013

Thank you! Now i understand it!

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