Error using unique command

I have two values

A = [1000 16000 100000 30000 2000]  
B = [150 100 4000 5000 2000];

I used code below to get the Sorted value of B according to A:

[ii jj k] = unique(A);  
B = unique(B);  
P = B(k);  
C = [100 4000 2000 5000 150];

If my values of A are from -400 to 400 and and values of B are from -100 to 100 I get the error :

Index exceeds Dimension

Please provide assistance.

Answer 1

[Azzi Abdelmalek]

Edited

A=[1000 16000 100000 30000 2000]
B=[150 100 4000 5000 2000];
[~,idx]=sort(A)
[~,idx1]=sort(idx)
C=B(idx1)

[Pat]

But Azzi those sizes are same ,if not that code can you suggest some other code please

[Pat]

Azzi i am getting the same error

[Azzi Abdelmalek]

If they are the same length, you can't get an error, If they are not the same length you can't use P=B(jj), you can use P=A(jj)

[Pat]

Azzi same error

Index exceeds matrix dimensions.

Error in ==> sample at 64 P=B(jj)

if anything worng in that code,can you assist me with another code please

[Pat]

Anothet thing Azzi my both value size of A and B are same say 300x1

i used

g=unique(A);its size is 224x1

g1=uinque(B);its size is 87x1

[Pat]

size of A is 300x1

size of B is 300x1

[Azzi Abdelmalek]

Ok, have you changed your code orfer to

P=B(k) % then
B=unique(B);

[Pat]

I have done everthing what u have posted

[Azzi Abdelmalek]

Post your full code

[Pat]

YEs Azzi i get error

 Index exceeds matrix dimensions.

Error in ==> sample at 64 P=B(k)

[Pat]

i changed even same error

Index exceeds matrix dimensions.

Error in ==> sample at 64 P=B(jj)

[Pat]

My code 

A=csvread(''); 300x1 
B=csvread(''); 300x1

Cw=A;
Sw=A;

for i=1:length(Cw)
if (Cw(i)<12 && Cw(i)>-12)
Cw(i)=0;
end
end
for i=1:length(Sw)
if (Sw(i)<12 && Sw(i)>-12)
Sw(i)=0;
end
end
A=Cw;
B=Sw;

if length(A)<length(B)
S=length(B)-length(A);
S1=zeros(S,1);
A=[A;S1];B;
elseif length(A)>length(B)
S=length(A)-length(B);
S1=zeros(S,1);
B=[B;S1];A;
else
    A;B;
end

Cw=A;
Sw=B;

[r c]=size(Cw)

[r1 c1]=size(Sw)

Cw=double(Cw);Sw=double(Sw);

A=[];B=[];

A=Cw;B=Sw;
[ii jj k]=unique(A);
B=unique(B);
P=B(jj)  
B=unique(B);

[Azzi Abdelmalek]

Pat, remove the third line (counting from the last line) B=unique(B); You can even use B(k) if that's what you need

[Pat]

ok Azzi now it works ,the thing is the size of B differ which is B=unique(B); it is just 110x1 , after the same i should get same size ,why do i get different size,

[Azzi Abdelmalek]

Try this to understand

A=[1 1 1 2 2   12451];
[ii jj k]=unique(A)

check ii, jj and k

[Pat]

Thanks a lot Azzi ,i understand the concept ,even i perform B(k) the size varies,please provide a different code because that unique command is making the size less,in which i have problem in performing other steps

[Azzi Abdelmalek]

But I don't know what do you want to compute?

[Pat]

A=[1000 16000 100000 30000 2000]

B=[150 100 4000 5000 2000];

Sorting B according to A ,so i got output from above code as 

C=[100 4000 2000 5000 150],minimum value of B comes under minimum value of A,,,,,,2nd minimum of B comes under 2nd minmum of A.........finally maximum of B comes under maximum of A

[Pat]

so finallu C will have same size of A and B

[Azzi Abdelmalek]

or maby it's this

A=[1000 16000 100000 30000 2000]
B=[150 100 4000 5000 2000];
[~,idx]=sort(A)
[~,idx1]=sort(idx)
C=B(idx1)

[Azzi Abdelmalek]

Pat, look at my edited answer

Answer 2

[Salil Goel]

Are you making sure that the size of A and B is same when values in A are from -400 to 400 and B from -100 to 100? If not, then obviously you would get this error.

Answer 3

[Matt Fig]

% Sort B the same way A is sorted.
% We only need two calls to SORT.
[~,J] = sort(A);
BSA = sort(B);
J(J) = 1:length(A);
BSA = BSA(J)  % This is B, sorted the same way A originally was.

[Pat]

Thanks Fig,if there are unique and negatve values must be done

[Azzi Abdelmalek]

Pat can you post an example

[Pat]

   A=[120 150 12 10 36 25 ];
   B=[2 9 1 6 8 10];

   out=[9 10 2 1 8 6]

but no idea if it consists of negative and unique values

[Azzi Abdelmalek]

What is the difference with the previous example?

[Pat]

No difference as u said i have posted an example..another problem am facing Azzi is that if i use 

Ew1 = dec2bin(mod(2^16+Ew,2^16)),my all values gets converted to 1111111111111111

y i get all value as one,Ew constsist of values from -32768 to 32767