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fix binning error in continuous data histogram (#869)

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This commit is contained in:
Bruce Martin
2019-08-05 10:40:56 -07:00
committed by GitHub
parent 57b1c3cbb4
commit 906d65c06f
2 changed files with 29 additions and 5 deletions
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client/src/util/dataframe/histogram.js
+5 -5
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@@ -8,13 +8,13 @@ function _histogramContinuous(column, bins, min, max) {
if (!column) {
return valBins;
}
const binWidth = (max - min) / (bins - 1);
const binWidth = (max - min) / bins;
const colArray = column.asArray();
for (let r = 0, len = colArray.length; r < len; r += 1) {
const val = colArray[r];
if (val <= max && val >= min) {
// ensure test excludes NaN values
const valBin = (val - min) / binWidth;
const valBin = Math.min(Math.floor((val - min) / binWidth), bins - 1);
valBins[valBin] += 1;
}
}
@@ -26,7 +26,7 @@ function _histogramContinuousBy(column, bins, min, max, by) {
if (!column || !by) {
return byMap;
}
const binWidth = (max - min) / (bins - 1);
const binWidth = (max - min) / bins;
const byArray = by.asArray();
const colArray = column.asArray();
for (let r = 0, len = colArray.length; r < len; r += 1) {
@@ -39,8 +39,8 @@ function _histogramContinuousBy(column, bins, min, max, by) {
const val = colArray[r];
if (val <= max && val >= min) {
// ensure test excludes NaN values
const valBin = (val - min) / binWidth;
valBins[Math.floor(valBin)] += 1;
const valBin = Math.min(Math.floor((val - min) / binWidth), bins - 1);
valBins[valBin] += 1;
}
}
return byMap;