Hi..I have 1000 matrices ,A_1 to A_1000 of size 3*3 .I want to merge all then together (concatenate )vertically to form a bigger rectangular matrix of size 3000*3.. I know [A_1 A_2 . . . . A_1000] will do this .pls let me know instead of manual typing from A_1 to A_1000 it can be looped in some way or ..