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Topic: access matrix
Replies: 8   Last Post: Feb 6, 2013 8:36 AM

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 Jos Posts: 1,268 Registered: 10/24/08
Re: access matrix
Posted: Feb 5, 2013 4:09 AM

"amira ali" wrote in message <keohlb\$51a\$1@newscl01ah.mathworks.com>...
> need help urgently
>
> i have location of interest points in matrix A(2*13 ) where 2 is x,y of point and 13 is total number of points for example:
> x y
> 72.6781959551728 46.7543453323974
> 71.9155271184922 100.930596158669
>
> and i have another matrix called flow (120*160) this matrix contain velocity of every pixel (v in x direction) and (v in y direction). all i need it how can i get the velocity of 13 interest points from this matrix flow so finally i must have
> x y v(x) v(y)
> 72. 46.7543 0.087396 -0.135287

Using x and y as indexes in a matrix requires them to be integers ...

Your question is also not very clear. You have "another matrix called flow" which is 2D but you index a one-dimensional vector v, using v(x) and v(y).

~ Jos

Date Subject Author
2/4/13 amira ali
2/5/13 Jos
2/5/13 amira ali
2/5/13 Jos
2/5/13 amira ali
2/6/13 Jos
2/5/13 Bruno Luong
2/5/13 amira ali
2/6/13 amira ali