MATLAB: I have n*n matrix.I want to get all the elements of 1st column of nth rows like A(:,1). Now how will i arrange all the n elements into a single row i,e b=[A(1,1) A(2,1) A(3,1)………… A(n,1)].What will be the command for n being large say 5000

matrix manipulation

I have n*n matrix.I want to get all the elements of 1st column of nth rows like A(:,1). Now how will i arrange all the n elements into a single row i,e b=[A(1,1) A(2,1) A(3,1)………… A(n,1)].What will be the command for n being large say 5000?

Best Answer

The most general, correct answer is to use transpose .' (rather than conjugate transpose '):

A(:,1).'

Related Solutions

MATLAB: I want to make every row have same number

Try

A = repmat((1:N)', [1, N])

MATLAB: Sequence a_n =1/n

Use element-wise division:

n = 1:100;
format short
Seq = 1./n

producing:

Seq =
    1.0000    0.5000    0.3333    0.2500    0.2000    0.1667    0.1429    0.1250    0.1111 ...

alternatively:

format rat
Seq = 1./n

producing:

Seq =
       1              1/2            1/3            1/4            1/5            1/6  ...

EDIT — (17 Jan 2020 at 17:11)

Forgot to include the plot call.

Here it is:

figure
plot(Seq)
grid

This is the same as:

figure
plot((1:numel(Seq)), Seq)
grid

Best Answer

Related Solutions

MATLAB: I want to make every row have same number

MATLAB: Sequence a_n =1/n

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