100pah commented on a change in pull request #12147: Fix: minOpen is true will
drop a piece
URL:
https://github.com/apache/incubator-echarts/pull/12147#discussion_r379893617
##########
File path: src/component/visualMap/PiecewiseModel.js
##########
@@ -402,7 +402,7 @@ var resetMethods = {
if (thisOption.minOpen) {
pieceList.push({
- index: index++,
+ index: index,
Review comment:
Also consider
(1) @pissang mentioned: when the split number is `5`, the final pieces
should better be `5`.
(2) The potential bug that the `piece.index` forget to change after
`reformIntervals(pieceList)` called.
I think the code to resolve this issue could be:
```js
splitNumber: function () {
var thisOption = this.option;
var pieceList = this._pieceList;
var precision = Math.min(thisOption.precision, 20);
var dataExtent = this.getExtent();
var splitNumber = thisOption.splitNumber;
splitNumber = Math.max(parseInt(splitNumber, 10), 1);
thisOption.splitNumber = splitNumber;
+ var closedIntervalCount = splitNumber - (+thisOption.minOpen) -
(+thisOption.maxOpen);
- var splitStep = (dataExtent[1] - dataExtent[0]) / splitNumber;
+ var splitStep = (dataExtent[1] - dataExtent[0]) /
closedIntervalCount;
// Precision auto-adaption
while (+splitStep.toFixed(precision) !== splitStep && precision < 5)
{
precision++;
}
thisOption.precision = precision;
splitStep = +splitStep.toFixed(precision);
- var index = 0;
if (thisOption.minOpen) {
pieceList.push({
- index++,
interval: [-Infinity, dataExtent[0]],
close: [0, 0]
});
}
for (
- var curr = dataExtent[0], len = index + splitNumber;
- index < len;
- curr += splitStep
+ var index = 0, curr = dataExtent[0];
+ index < closedIntervalCount;
+ curr += splitStep, index++
) {
var max = index === splitNumber - 1 ? dataExtent[1] : (curr +
splitStep);
pieceList.push({
- index: index++,
interval: [curr, max],
close: [1, 1]
});
}
if (thisOption.maxOpen) {
pieceList.push({
- index: index++,
interval: [dataExtent[1], Infinity],
close: [0, 0]
});
}
reformIntervals(pieceList);
- zrUtil.each(pieceList, function (piece) {
+ zrUtil.each(pieceList, function (piece, index) {
+ piece.index = index;
piece.text = this.formatValueText(piece.interval);
}, this);
},
```
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