diff --git a/src/content-modules/contextual-tools/InterpolatePoints.svelte b/src/content-modules/contextual-tools/InterpolatePoints.svelte
index 12ffb1cf..f189f29d 100644
--- a/src/content-modules/contextual-tools/InterpolatePoints.svelte
+++ b/src/content-modules/contextual-tools/InterpolatePoints.svelte
@@ -9,6 +9,7 @@
   import PalPreview from "../../components/PalPreview.svelte";
 
   $: focusedColors = $focusStore.focusedColors;
+  $: focusSet = new Set(focusedColors);
   $: colors = $colorStore.currentPal.colors;
   let colorSpace = "lab";
   let numPoints = 1;
@@ -41,21 +42,15 @@
     }
     return points;
   }
-  function createInterpolation(forPreview: boolean): Color[] {
+  function createInterpolation(): Color[] {
     const newColors = [];
     for (let idx = 0; idx < focusedColors.length - 1; idx++) {
       const pointA = colors[focusedColors[idx]];
       const pointB = colors[focusedColors[idx + 1]];
       const newPoints = createInterpolatedPoints(pointA, pointB);
-      if (forPreview) {
-        newColors.push(pointA, ...newPoints);
-      } else {
-        newColors.push(...newPoints);
-      }
-    }
-    if (forPreview) {
-      newColors.push(colors[focusedColors[focusedColors.length - 1]]);
+      newColors.push(pointA, ...newPoints);
     }
+    newColors.push(colors[focusedColors[focusedColors.length - 1]]);
     return newColors;
   }
 </script>
@@ -94,15 +89,13 @@
       <button
         class="{buttonStyle} mt-5"
         on:click={() => {
-          let newColors = [...colors];
-          const newPoints = createInterpolation(false);
+          let newColors = [...colors].filter((_, idx) => !focusSet.has(idx));
+          const offset = newColors.length;
+          const newPoints = createInterpolation();
           newColors = [...newColors, ...newPoints];
           colorStore.setCurrentPalColors(newColors);
           // also focus all of the new points
-          focusStore.setColors([
-            ...focusedColors,
-            ...newPoints.map((_, idx) => colors.length + idx),
-          ]);
+          focusStore.setColors([...newPoints.map((_, idx) => offset + idx)]);
         }}
       >
         Add points
diff --git a/src/lib/charts.ts b/src/lib/charts.ts
index 3e507358..48bd4899 100644
--- a/src/lib/charts.ts
+++ b/src/lib/charts.ts
@@ -109,32 +109,6 @@ export function buildTheme(pal: Palette): any {
   };
 }
 
-// const groupedBarChart = () => ();
-// const scatterPlot = () => ();
-
-// const map = () => ();
-
-// const areaChart = () => ();
-
-// const stackedAreaChart = () => ();
-// url: !location.href.includes("localhost")
-//   ? "https://vega.github.io/editor/data/penguins.json"
-//   : "data/penguins.json",
-
-// const scatterPlotOrdinal = () => ();
-
-// const heatmap = () => ();
-
-export const charts = [
-  // groupedBarChart, //
-  // { group: "categorical", chart: scatterPlot },
-  // { group: "categorical", chart: map },
-  // { group: "categorical", chart: areaChart },
-  // { group: "categorical", chart: stackedAreaChart },
-  // { group: "ordinal", chart: scatterPlotOrdinal },
-  // { group: "ordinal", chart: heatmap },
-];
-
 const vegaDatasets = [
   "7zip.png",
   "airports.csv",
@@ -231,11 +205,9 @@ export async function getSVG(localSpec: string, pal: Palette) {
   //   : "data/penguins.json",
   const matchedDataset = vegaDatasets.find((x) => spec.data?.url?.includes(x));
   if (matchedDataset) {
-    const isLocal = location.href.includes("localhost");
-    if (isLocal) {
+    if (location.href.includes("localhost")) {
       spec.data.url = `data/${matchedDataset}`;
-    }
-    if (!isLocal && spec.data.url === `data/${matchedDataset}`) {
+    } else {
       spec.data.url = `https://vega.github.io/editor/data/${matchedDataset}`;
     }
   }