diff --git a/src/lib.rs b/src/lib.rs
index 16b30e1..4d630f7 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -40,6 +40,37 @@ pub fn main() {
         -1.0,
     );
 
+    fn create_GTR_ratematrix(a: f64, b: f64, c: f64, d: f64, e: f64, f: f64, pv: Vec<f64>) -> na::Matrix4<f64> {
+        // pv = pivec defined as (piA, piC, piG, piT)
+        let mut q = na::Matrix4::new(
+            -(a * pv[1] + b * pv[2] + c * pv[3]),
+            a * pv[1],
+            b * pv[2],
+            c * pv[3],
+            a * pv[0],
+            -(a * pv[0] + d * pv[2] + e * pv[3]),
+            d * pv[2],
+            e * pv[3],
+            b * pv[0],
+            d * pv[1],
+            -(b * pv[0] + d * pv[1] + f * pv[3]),
+            f * pv[3],
+            c * pv[0],
+            e * pv[1],
+            f * pv[2],
+            -(c * pv[0] + e * pv[1] * f * pv[2]));
+
+        let mut diag = 0.0;
+        for i in 0..=3 {
+            diag -= q[(i, i)] * pv[i];
+        }
+
+        q / diag
+    }
+
+    let q2 = create_GTR_ratematrix(1.0, 1.0, 1.0, 1.0, 1.0, 1.0, vec![0.25, 0.25, 0.25, 0.25]);
+    // println!("{:?}", q2);
+
     // let mut tr = vector_to_tree(&random_vector(4));
     // tr.add_genetic_data(&String::from("/Users/joel/Downloads/listeria0.aln"));
     let mut tr = vector_to_tree(&random_vector(27));
@@ -52,10 +83,10 @@ pub fn main() {
 
     if !args.no_optimise {
         let start = Instant::now();
-        tr.hillclimb(&q, 50);
+        tr.hillclimb(&q, 0);
         let end = Instant::now();
 
         eprintln!("Done in {}s", end.duration_since(start).as_secs());
-        eprintln!("Done in {}s", end.duration_since(start).as_millis());
+        eprintln!("Done in {}ms", end.duration_since(start).as_millis());
     }
 }