find nearest value in array using matlab in javascript

To find the nearest value in an array in Javascript, you can use a search algorithm to iterate through the array and compare each value to the target value. Here is an example implementation using linear search:

index.tsx
function findNearestValue(array, target) {
  let closestValue = array[0];
  let smallestDifference = Math.abs(array[0] - target);

  for (let i = 1; i < array.length; i++) {
    let difference = Math.abs(array[i] - target);
    if (difference < smallestDifference) {
      closestValue = array[i];
      smallestDifference = difference;
    }
  }

  return closestValue;
}
373 chars
15 lines

This function takes an array of numbers and a target value, and returns the value in the array that is closest to the target. It does this by iterating through the array and comparing each value to the target, keeping track of the value with the smallest difference.

In Matlab, you can use the min() function to find the element in an array that is closest to a target value:

main.m
array = [1, 4, 7, 10, 13];
target = 8;
[~, index] = min(abs(array - target)); % Get the index of the closest element
closestValue = array(index); % Get the closest element itself
179 chars
5 lines

This code first calculates the absolute difference between each element of the array and the target value using abs(array - target), and then uses the min() function to find the smallest absolute difference. The second output of min() is the index of the closest element, which is then used to get the actual element from the array.