locinus edited a comment on issue #14835:
URL: https://github.com/apache/echarts/issues/14835#issuecomment-903303711
I indeed believe this issue still exists: markLines defined by two points
disappear when zooming in, as at least one of the points is out of the zoomed
window, and even with the filterMode: 'none' option.
A possible workaround could be to hook on the 'datazoom' event and save the
zoom state:
const zoomState = {};
```
echartsInstance.on('datazoom', (event) => {
const option = echartsInstance.getOption();
if(option.dataZoom && Array.isArray(option.dataZoom) &&
option.dataZoom.length > 0) {
zoomState.startValue = option.dataZoom[0].startValue;
zoomState.endValue = option.dataZoom[0].endValue;
}
});
```
and then proceed to recalculate the chart's options, using the
zoomState.startValue and zoomState.endValue as the boundaries of the markLines
(I would add +1 to the startValue and -1 to the endValue to make sure we're
within the zoomed window). Not ideal, but does the job.
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