Change heatmpa bandwidth default

README.md

@@ -171,7 +171,7 @@ new ThreeGlobe({ configOptions })
 | <b>heatmapPointLat</b>([<i>num</i>, <i>str</i> or <i>fn</i>]) | Heatmap point object accessor function, attribute or a numeric constant for the latitude coordinate. | `arr => arr[0]` |
 | <b>heatmapPointLng</b>([<i>num</i>, <i>str</i> or <i>fn</i>]) | Heatmap point object accessor function, attribute or a numeric constant for the longitude coordinate. | `arr => arr[1]` |
 | <b>heatmapPointWeight</b>([<i>num</i>, <i>str</i> or <i>fn</i>]) | Heatmap point object accessor function, attribute or a numeric constant for the weight of the point. The weight of a point determines its influence on the density of the surrounding area. | 1 |
-| <b>heatmapBandwidth</b>([<i>num</i>, <i>str</i> or <i>fn</i>]) | Heatmap object accessor function, attribute or a numeric constant for the heatmap bandwidth, in angular degrees. The bandwidth is an internal parameter of the [Gaussian kernel function](https://en.wikipedia.org/wiki/Gaussian_function) and defines how localized is the influence of a point on distant locations. A narrow bandwidth leads to a more spiky representation, while a broad one has smoother curves. | 4 |
+| <b>heatmapBandwidth</b>([<i>num</i>, <i>str</i> or <i>fn</i>]) | Heatmap object accessor function, attribute or a numeric constant for the heatmap bandwidth, in angular degrees. The bandwidth is an internal parameter of the [Gaussian kernel function](https://en.wikipedia.org/wiki/Gaussian_function) and defines how localized is the influence of a point on distant locations. A narrow bandwidth leads to a more spiky representation, while a broad one has smoother curves. | 2.5 |
 | <b>heatmapColorFn</b>([<i>str</i> or <i>fn</i>]) | Heatmap object accessor function or attribute for the color interpolator function to represent density in the heatmap. This function should receive a number between `0` and `1` (or potentially higher if saturation > 1), and return a color string. | [Turbo colormap](https://blog.research.google/2019/08/turbo-improved-rainbow-colormap-for.html) interpolator with fading opacity |
 | <b>heatmapColorSaturation</b>([<i>num</i>, <i>str</i> or <i>fn</i>]) | Heatmap object accessor function, attribute or a numeric constant for the color scale saturation. The saturation is a multiplier of the normalized density value (`[0,1]`) before passing it to the color interpolation function. It can be used to dampen outlier peaks in density and bring the data floor into view. | 1.5 |
 | <b>heatmapBaseAltitude</b>([<i>num</i>, <i>str</i> or <i>fn</i>]) | Heatmap object accessor function, attribute or a numeric constant for the heatmap base floor altitude in terms of globe radius units (`0` = 0 altitude, `1` = globe radius). | 0.01 |

src/layers/heatmaps.js

@@ -74,7 +74,7 @@ export default Kapsule({
     heatmapPointLat: { default: d => d[0] },
     heatmapPointLng: { default: d => d[1] },
     heatmapPointWeight: { default: 1 },
-    heatmapBandwidth: { default: 4 }, // Gaussian kernel bandwidth, in angular degrees
+    heatmapBandwidth: { default: 2.5 }, // Gaussian kernel bandwidth, in angular degrees
     heatmapColorFn: { default: () => defaultColorInterpolator },
     heatmapColorSaturation: { default: 1.5 }, // multiplier for color scale max
     heatmapBaseAltitude: { default: 0.01 }, // in units of globe radius