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Asked by Brwa on 24 May 2013

Hi everyone, I have 2 problems.

1-I want to plot a figure for each value of y its mean i should have 10 figures, i tried many cases but i only got 1 figure.

2- i want to get max(y) for each iteration. then max y for all iteration and i want to know the max y belong to which step.

```M = eye(2,2);
```
```C = [ 2 3; 1 5];
```
```t = 1:1:10
```
```for i = 1:1:10
```
`     y = M * C`
`     plot (t, y)`
`     y1 = max(y)     `
```     y2 = max(y1(1,:)) %   scalar
end```
`     y3 = max(y2) %  this is the max among all values of y for all steps`
`                  %  for y3 i want to know its belong to which row in y2 ?`
```Thanks for your help, your help always appreciated
```

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Answer by Walter Roberson on 24 May 2013

1) Before your plot() call, insert

```figure();
```

2)

In the loop,

```y2(i) = max(y1(1,:));
```

After the loop,

```[y3, y3row] = max(y2);
```

Image Analyst on 25 May 2013

But you're not changing C inside the loop - it's the same every single iteration.

Brwa on 25 May 2013

so, how can i change it ? Sorry Im new in matlab.

in the example i just right down one matrix for C but actually i got C from another loop so its more than one matrix. does this program always use one of C matrices or each time will change C?

Image Analyst on 29 May 2013

The way you wrote the code, there is only one C so it will use only that one C.

Answer by Brwa on 24 May 2013
` Thank you  Mr Walter Roberson, both of them works well.`

thanks alot, wish you the best