How do I create a regularly-spaced array of values in MATLAB?

Question

How do I make an array that\'s defined with a start point, an end point, and a total array size? Something like an array that goes from 1 to 10 that\'s 20 elements long. For

Answer 1

There are a couple of ways you can do this:

• Using the colon operator:

  startValue = 1;
  endValue = 10;
  nElements = 20;
  stepSize = (endValue-startValue)/(nElements-1);
  A = startValue:stepSize:endValue;
  

• Using the linspace function (as suggested by Amro):

  startValue = 1;
  endValue = 10;
  nElements = 20;
  A = linspace(startValue,endValue,nElements);
  

Keep in mind that the number of elements in the resulting arrays includes the end points. In the above examples, the difference between array element values will be 9/19, or a little less than 0.5 (unlike the sample array in the question).