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xenharmonic-devs · Nov 27, 2023 · 89abc03 · 89abc03
1 parent 6589dcb
commit 89abc03
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/src/analysis.ts b/src/analysis.ts
@@ -103,12 +103,12 @@ export function utonalFundamental(frequencies: number[], maxDivisor = 23) {
 }
 
 // Interval matrix a.k.a the modes of a scale
-export function intervalMatrix(scale: Scale) {
+export function intervalMatrix(scale: Scale, startIndex: number) {
   const result = [];
-  const degrees = [...Array(scale.size + 1).keys()];
+  const degrees = [...Array(scale.size + 1 - startIndex).keys()];
   for (let i = 0; i < scale.size; ++i) {
     const mode = scale.rotate(i);
-    result.push(degrees.map((j) => mode.getInterval(j)));
+    result.push(degrees.map((j) => mode.getInterval(j + startIndex)));
   }
   return result;
 }