Find index to x,y pairs

I have two vectors xEdges and yEdges which define positions in the x,y plane. In the example below, the lower left location value would be (20, 2). Given a vector list of locations, how can I find their indices within xEdges,yEdges? In the example below, the indices corresponding to the desired locations xFind,yFind would be ix = [ 2 4 4 6 ], iy = [ 2 6 8 9 ]. I need to use the indices to look up values of a matrix which has size nY,nX.

xEdges = 2:11 ; yEdges = 20:28 ; % Location vector
xFind = [ 3 5 5 7 ] ; yFind = [ 21 25 27 28 ] ; % x, y pairs

Answer 1

[the cyclist]

[xtf ix] = ismember(xFind,xEdges);
[ytf iy] = ismember(yFind,yEdges);

[K E]

Perfect, thank so much.