Here is a Scilab code snippet to evaluate the magnitude of a vector:

 function magnitude = vectorMagnitude(vector)
  // Calculates the magnitude (Euclidean norm) of a vector.
  // Input:
  //   vector: A Scilab vector (row or column).
  // Output:
  //   magnitude: The magnitude of the vector (a scalar).
 

  magnitude = sqrt(sum(vector .* vector));
 endfunction
 

 // Example Usage:
 vector1 = [3, 4];
 magnitude1 = vectorMagnitude(vector1);
 disp("Magnitude of vector1: " + string(magnitude1));
 

 vector2 = [1, 2, 3, 4, 5];
 magnitude2 = vectorMagnitude(vector2);
 disp("Magnitude of vector2: " + string(magnitude2));
 

 vector3 = [1; 2; 3]; // Column vector
 magnitude3 = vectorMagnitude(vector3);
 disp("Magnitude of vector3: " + string(magnitude3));
 

Explanation:

• The code defines a function called vectorMagnitude that takes a vector as input.
• Inside the function, it calculates the square root of the sum of the squares of the vector elements using sqrt(sum(vector .* vector)). The .* operator performs element-wise multiplication.
• The calculated magnitude is then returned by the function.
• The example usage section demonstrates how to use the function with different vectors (row and column vectors).
• The disp function displays the result in the Scilab console.

This code calculates the Euclidean norm (also known as the L2 norm or magnitude) of the vector.