Adding Rows with Specific Values to Existing Variables

Hello,

I have a 7x1 variable ("X1") to which I need to add a row at the beginning (cell value = 0) and a row at the end (cell value = 0). Obviously, I could do this manually, but I have many variables this needs to be done to.

My noodle is fried today. Apologies.

Answer 1

[Star Strider]

The easiest way is to concatenate zeros at the beginning and end of ‘X1’:

X1 = randi(9, 7, 1);                  % Create Data To Test Code
Result = [0; X1; 0];

[balsip]

Star Strider, that doesn't quite have the intended results. Before, by 7x1 variable was:

X1 =

   59.9594
   84.8451
   59.9945
    0.0000
  -59.9945
  -84.8451
  -59.9594

Adding your code:

X1 = randi(9,7,1);
Result = [0; X1; 0];

Results in the following 9x1:

0
8
2
4
9
8
9
6
0

I need to keep the values in the original 7x1 but add first and last cells with 0 values. Should be:

     0
     59.9594
     84.8451
     59.9945
     0.0000
    -59.9945
    -84.8451
    -59.9594
     0

[James Tursa]

The X1 = randi(9, 7, 1) was just to get some sample data. You can eliminate that line since you already have X1 with your actual data. Just do this:

Result = [0; X1; 0];

[Star Strider]

Thank you, James!

Ambiguity now resolved (I hope).