MATLAB: How to append 1 array with half the elements of second array

I have 2 arrays Arr1=[2 3 4 5] and arr2=[6 7 8 9 10 12] with C=number of elements in arr2 (here, it is 6). So, I want to append array1 with half the elements of array2 e.g arr1=arr1+arr2[C/2]?

Best Answer

arr1 = [arr1, arr2(1:end/2)]

Related Solutions

MATLAB: How to compare rows from two arrays and delete the different column

Maybe use ismember() with the rows option:

Arr1 = [1  2  6;
  2  4  8;
  5  6  4;
  8  1  10]
Arr2 = [1  2  3;
  2  3  4;
  5  6  7;
  8  9  10;
  11 12 13]
[ia, ib] = ismember(Arr1(:, 1:2), Arr2(:, 1:2), 'rows')
Arr1 = Arr1(ia, :)
Arr2 = Arr2(ia, :)

You'll see in the command window:

ia =
  4×1 logical array
   1
   0
   1
   0
ib =
     1
     0
     3
     0
Arr1 =
     1     2     6
     5     6     4
Arr2 =
     1     2     3
     5     6     7

MATLAB: Append to an array

Hi,

A possible solution to your problem could be something like this. Set the array as empty initially(beginning of the session).

nameArray = {};

You can then append the entries in the array as follows:

nameArray = [nameArray, 'Name you want to append'];

This uses the concept of cell array. You might want to refer to the documentation on cell arrays for more information. http://www.mathworks.com/help/matlab/cell-arrays.html

Best Answer

Related Solutions

MATLAB: How to compare rows from two arrays and delete the different column

MATLAB: Append to an array

Related Question