Iterate between fixed numbers in an array and store into a matrix.

I'm trying to iterate an array for the first 250 element and store certain values like the max, min, mean and peak2peak in a array. I first want to iterate the 250 elements out of an array of 98000 and store these values in a different array and then continue from 251st element until it reaches 98000.

Answer 1

[Stephan]

I suggest to reshape the array to have 250 rows. The most Matlab functions like mean, max, min, sum... work on the columns of an array by default, so this is easy to write. For example:

A = randi(100,10,5)
A_mean = mean(A)
A_max = max(A)
A_min = min(A)

A =

    37    51    88    23    44
    63    52    56    18    12
    79    82    63    23    26
     9    80    59    44    41
    93    65    21    32    60
    78    38    31    93    27
    49    82    48    44    61
    44    54    24    19    72
    45    36    85    91    23
    31    94    20    98    12


A_mean =

   52.8000   63.4000   49.5000   48.5000   37.8000


A_max =

    93    94    88    98    72


A_min =

     9    36    20    18    12

To reshape use:

A = reshape(YourArrayName,250,[]);

Writing them all in one array would work this way:

A_properties(1,:) = mean(A);
A_properties(2,:) = max(A);
A_properties(3,:) = min(A);