Calculate means of multiple matrices

Hi there, I'm new to Matlab and very bad in coding.

I have this set of matrices in my workspace named D01 - D09. There are 3 columns in each matrix.

First I want to extract the middle column and then calculate the mean by using 0.5*(min + max). The mean value is then stored as LiftD01 - LiftD09.

This is what I tried:

 for k = 1:9
  lift = D0{k}(:,2);
  LiftD0{k} = 0.5*(min(lift)+max(lift));
 end

However, the error "Index exceeds matrix dimensions." keeps popping out.

What should I do?

Thank you!

P.S. Is it correct to use matrixname{k} to make Matlab produce a sequence of matrices?

Answer 1

[Sean de Wolski]

FAQ4.6

To get you started

doc cell
doc struct

for afterward

Answer 2

[Walter Roberson]

D0{3} is not the same thing as D03.

Before accessing D0{k} insert a line (outside the for loop)

[D0{1:9}] = deal(D01,D02,D03,D04,D05,D06,D07,D08,D09);

This will copy the contents of D01 to D0{1} (efficiently) but a change to D01 would not be reflected in D0{1} as they are not identical variables.