diff --git a/src/ScatterplotWidget.h b/src/ScatterplotWidget.h
index 8cff1df..82defe9 100644
--- a/src/ScatterplotWidget.h
+++ b/src/ScatterplotWidget.h
@@ -97,12 +97,6 @@ class ScatterplotWidget : public QOpenGLWidget, protected QOpenGLFunctions_3_3_C
     std::uint32_t getNumberOfSelectablePoints() const;
     std::uint32_t getNumberOfEffectivelySelectedPoints() const;
 
-    /** Set the second color scalar channel (used for 2D and RGB coloring) */
-    void setScalars2(const std::vector<float>& scalars);
-
-    /** Set the third color scalar channel (used for RGB coloring) */
-    void setScalars3(const std::vector<float>& scalars);
-
     /**
      * Set colors for each individual data point
      * @param colors Vector of colors (size must match that of the loaded points dataset)