# Create an equally spaced vector when taking the sine of another vector

11 views (last 30 days)
Lama Hamadeh on 17 Jun 2021
Commented: Lama Hamadeh on 17 Jun 2021
I want to create a vector containing 25 points such that the points are equally spaced when you take the sine of another vector : As shown in the code below:
%angle variable (θ)
theta_min = -pi/2; %minimum angle
theta_max = pi/2; %maximum angle
nt = 25; %number of angles
theta = linspace(theta_min,theta_max,nt); %angle variable
%p=sin(θ)
p = sin(theta); %I want this vector to range from -1 to 1 with 25 equally spaced points.
Thnaks.

Stephan on 17 Jun 2021
p_inv = linspace(-1,1,25);
theta = asin(p_inv);
p = sin(theta);
diff(p) % Is p equally spaced?
ans = 1×24
0.0833 0.0833 0.0833 0.0833 0.0833 0.0833 0.0833 0.0833 0.0833 0.0833 0.0833 0.0833 0.0833 0.0833 0.0833 0.0833 0.0833 0.0833 0.0833 0.0833 0.0833 0.0833 0.0833 0.0833
scatter(p,theta)
Lama Hamadeh on 17 Jun 2021
smart move! Thanks!

### Categories

Find more on Numerical Integration and Differentiation in Help Center and File Exchange

### Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by