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arraysmatlabintegersubtraction

Subtracting an array from an integer in MATLAB

I think I'm having a hard time understanding the code below in MATLAB. I've expected A to be [3,2,1,0] but it actually returned [3,4]. Why does this happen?

numberpoints = 1;
x = 4;

A = x-numberpoints:x;
Solution

  • This is what it's doing:

    > (x-numberpoints):x % (4-1):4 or 3:4

ans =
   3   4

    To get your expected output:

    > x-(numberpoints:x) % 4-(1:4)

ans =
   3   2   1   0