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fix: improve chart min max scaler

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18alantom 2022-03-01 12:41:01 +05:30 committed by Alan
parent fc7130e776
commit 4b51d15de7
1 changed files with 16 additions and 12 deletions
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28
src/components/Charts/chartUtils.ts
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@ -29,18 +29,27 @@ export function euclideanDistance(
return Math.sqrt(dsq); return Math.sqrt(dsq);
} }
function getRoundingConst(val: number): number {
const pow = Math.max(Math.log10(Math.abs(val)) - 1, 0);
return 10 ** Math.floor(pow);
}
function getVal(minOrMaxVal: number): number {
const rc = getRoundingConst(minOrMaxVal);
const sign = minOrMaxVal >= 0 ? 1 : -1;
if (sign === 1) {
return Math.ceil(minOrMaxVal / rc) * rc;
}
return Math.floor(minOrMaxVal / rc) * rc;
}
export function getYMax(points: Array<Array<number>>): number { export function getYMax(points: Array<Array<number>>): number {
const maxVal = Math.max(...points.flat()); const maxVal = Math.max(...points.flat());
if (maxVal === 0) { if (maxVal === 0) {
return 0; return 0;
} }
const sign = maxVal >= 0 ? 1 : -1; return getVal(maxVal);
const texp = 10 ** Math.floor(Math.log10(Math.abs(maxVal)));
if (sign === 1) {
return Math.ceil(maxVal / texp) * texp;
}
return Math.floor(maxVal / texp) * texp;
} }
export function getYMin(points: Array<Array<number>>): number { export function getYMin(points: Array<Array<number>>): number {
@ -49,10 +58,5 @@ export function getYMin(points: Array<Array<number>>): number {
return minVal; return minVal;
} }
const sign = minVal >= 0 ? 1 : -1; return getVal(minVal);
const texp = 10 ** Math.floor(Math.log10(Math.abs(minVal)));
if (sign === 1) {
return Math.ceil(minVal / texp) * texp;
}
return Math.floor(minVal / texp) * texp;
} }