merge two arrays into one

i am trying to merge two arrays into one array.

The goal is to create a load cycle graph of a storage system.

One array is called "charge amount" and the other array is called "discharge amount".

for example:

charge amount = [ 1 2 3 4 5 0 0 0 0 0 1 2 3 4 5 .....]

discharge amount = [ 0 0 0 0 0 -1 -2 -3 -4 -5 0 0 0 0 0 .....]

how can i merge either one of the array into the other one where the value is zero (0)?

for example:

load cycle = [1 2 3 4 5 -1 -2- 3- -4 -5 1 2 3 4 5 .....]

thank you in advance.

[Sehoon Chang]

btw the elements within arrays are not in 5 element increments. the examples are just to show that there are 0 values and non-0 values

Answer 1

[Star Strider]

One option is simply to add them:

charge_amount = [ 1 2 3 4 5 0 0 0 0 0 1 2 3 4 5];
discharge_amount = [ 0 0 0 0 0 -1 -2 -3 -4 -5  0 0 0 0 0];

load_cycle = charge_amount + discharge_amount

load_cycle = 1×15

1 2 3 4 5 -1 -2 -3 -4 -5 1 2 3 4 5

That works for this example, at least.

.

[Sehoon Chang]

thanks! it worked :)

[Star Strider]

As always, my pleasure!

.

Answer 2

[Yongjian Feng]

Not sure what you really want.

1. If those two arrays have the same length at the time, and if the ith element of one array is non-zero, the ith element of the other array is always 0 (just like those two you showed), then it is just as easy as merged = charge_amount+discharge_amount;
2. If you need to put in extra logic then you can loop through those arrays:

charge_amount = [1 2 0 0 3 4];
discharge_amount = [0 0 5 6 0 0];
merged = zeros(1, length(charge_amount));
for i=1:length(charge_amount)
   % put your logic here
   % here assuming you sum them up only if one is zero, the other one is
   % not
   if (charge_amount(i) == 0 && discharge_amount(i) != 0) || (discharge_amount(i) == 0 && charge_amount(i) != 0) 
       % if one is zero and the other one is not, merge 
       merged(i) = charge_amount(i) + discharge_amount(i);
   elseif charge_amount(i) == 0 && discharge_amout(i) == 0
       % it doesn't make any difference sum them or not
   else
       % they are both non-zero, what do you want for this case?
   end
end