## plz help me sorting the error...

### angel (view profile)

on 13 Apr 2013
Latest activity Commented on by Walter Roberson

on 8 May 2017

### Image Analyst (view profile)

the code i wrote is:

```S(y,x)=0.125*f(y,mod(x-p-2,N)+1)+...
0.375*f(y,x)+...
0.375*f(y,mod(x+p,N)+1)+...
0.125*f(y,mod(x+p*2+1,N)+...
0.125*f(mod(y-p-2,N)+1,x)+...
0.375*f(y,x)+...
0.375*f(mod(y+p,N)+1,x)+...
0.125*f(mod(y+p*2+1,N)+1,x));
```

here f() corresponds to my input image

error shown is:

`   Attempted to access f(1,169.125); index must be a positive integer or logical.`
``` Error in dyadicAnalysis (line 29)
S(y,x)=0.125*f(y,mod(x-p-2,N)+1)+...```

here p=2^j-1; where j is a loop variable starts from 1 and end at log(N)/log(2)

N=sizef(1), sizef=size(f);

can anybody tell me what is the problem in it? i've tried floor but the error remains the same

### Image Analyst (view profile)

on 13 Apr 2013

There is no 169.125'th element of a matrix. You can access element # 169 or 170, but if you want to get 169.125 then you'll have to do interpolation.

angel

### angel (view profile)

on 15 Apr 2013

thank u so much sir.......

Aqsa Ali

### Aqsa Ali (view profile)

on 8 May 2017

Error using imshow>preParseInputs (line 425) IMSHOW expected at least 1 input argument but was called instead with 0 input arguments.

Error in imshow (line 214) varargin_translated = preParseInputs(varargin{:}); while running the code i am facing this error please help me in sorting out this error

Walter Roberson

### Walter Roberson (view profile)

on 8 May 2017

Aqsa Ali: which code are you using? Please post it.