obtain data using columns data indices

i have data A=( 3,5,3,1,4 ) in a column and

B=[ 4 6 9 1 3

2 7 2 5 7

7 3 1 8 2

4 1 6 9 1

2 5 8 3 6]

and i want: as in A first element is 3 and for this i want to get first element of column 3 row 1 from B which is 9. The second element of A is 5 and for this i want to get the the 2nd element of column 5 and row 2 from B which is 7 ,and do the process for all other elements . how to do this? the requried elememts are bold and underlined

any help will be really appriciated.........thanks in advance

[madhan ravi]

Dude just give the example of your desired output

[Farman Shah]

[9,7,1,4,3] is the disired output. which is underlined also

Answer 1

[Walter Roberson]

 B(sub2ind( size(B), 1:length(A), A))

[Farman Shah]

Error using sub2ind (line 47)

The subscript vectors must all be of the same size.

Error in takeprobe (line 6)

res= B(sub2ind( size(B), 1:length(A), A));

return this error. I have my A data in one Coulmn and B data in 5 Columns

[Walter Roberson]

B(sub2ind( size(B), (1:length(A)).', A(:)))

The above will work regardless of whether A is a row or column vector. However, it will return a column of results either way. If you need a row of results, put .' at the end:

B(sub2ind( size(B), (1:length(A)).', A(:))).'

[Farman Shah]

thank you very much sir.. you made my day easy.