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Fix language pie chart colors overlapping/repeating #135

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Fix language pie chart colors overlapping/repeating #135

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11 changes: 4 additions & 7 deletions src/main/resources/vue/components/_charts.vue
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Original file line number Diff line number Diff line change
Expand Up @@ -97,13 +97,10 @@
});

function createColorArray(length) {
const colors = ["#54ca76", "#f5c452", "#f2637f", "#9261f3", "#31a4e6", "#55cbcb"];
let array = [...Array(length).keys()].map(i => colors[i % colors.length]);
// avoid first and last colors being the same
if (length % colors.length === 1) {
array[length - 1] = colors[1];
}
return array;
// golden-angle hue steps spread colors evenly around the wheel,
// so no two colors land close together, no matter how many languages there are
const GOLDEN_ANGLE = 137.508;
return [...Array(length).keys()].map(i => `hsl(${(i * GOLDEN_ANGLE) % 360}, 65%, 55%)`);
}

function arrayRotate(arr, n) {
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