How do I turn a nxm matrix into a single array?

hi Matlabers,

say I have a matrix

[1 2 3 4;5 6 7 8;9 10 11 12; 13 14 15 16]

how can I turn this matrix so all the rows are combined into one. one after the other.

result

[1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16]?

thanks in advance. cheers SN

Answer 1

[Sachin Ganjare]

You can use reshape command:

a= [1 2 3 4;5 6 7 8;9 10 11 12; 13 14 15 16]

b = reshape(a,1,16)

or simply

b = a(:)'

Hope it helps!!!

[Matt Fig]

Should read:

b = reshape(a.',1,16)

[Ahsan Khan]

thanks so much...just what i needed

[Ahsan Khan]

thanks for all the help. but one last question, now say if I wanted to plot this in increments of 4. so it would plot columns 1:4 then i press enter and it plots 5:8... and so on. so it would look something like:

for i = 1:length(b)

plot(i,b(1:4)) % <<I KNOW THIS ISNT RIGHT...HOW DO I modify this..pls?

pause

end

am I even on the right track? thanks in advance

Answer 2

[manoj saini]

to exact answer >>b=reshape(a',1,16) because matlab always prefer coloum element so pass a'(a transpose) for your exact output

[Ahsan Khan]

thank you!!!:)