krabouilleur opened a new issue, #18042:
URL: https://github.com/apache/echarts/issues/18042
### What problem does this feature solve?
If I click on a "line" created by "coords" in a serie of type "lines", I
can't know what "coords" index is clicked :
for example :
```
var mousePosition = null;
$.get(
ROOT_PATH + '/data/asset/geo/MacOdrum-LV5-floorplan-web.svg',
function (svg) {
echarts.registerMap('MacOdrum-LV5-floorplan-web', { svg: svg });
option = {
tooltip: {
triggerOn: 'none'
},
geo: {
map: 'MacOdrum-LV5-floorplan-web',
roam: true
},
series: [
{
name: 'Route',
type: 'lines',
coordinateSystem: 'geo',
geoIndex: 0,
polyline: true,
lineStyle: {
color: '#c46e54',
width: 5,
opacity: 1,
type: 'dotted'
},
tooltip: {
trigger: 'item',
position: function (pos, params, dom, rect, size) {
return mousePosition;
},
formatter: function (params) {
return params.seriesName;
}
},
data: [
{
coords: [
[61.58708083147317, 386.87942320312504],
[61.58708083147317, 72.8954315876116],
[258.29514854771196, 72.8954315876116]
]
}
]
}
]
};
myChart.setOption(option);
}
);
myChart.on('mouseover', 'series.lines', function (params) {
console.log('MOUSE', params)
mousePosition = [params.event.offsetX, params.event.offsetY];
myChart.dispatchAction({
type: 'showTip',
seriesIndex: params.seriesIndex,
dataIndex: params.dataIndex
});
});
myChart.on('click', 'series.lines', function(params) {
console.log('I DON\'T KNOW WHICH "coords" index is clicked')
});
```
### What does the proposed API look like?
what it would be best:
1. if I click on the line (or mouseover) generated by coords on a type
"line**s**" series,
2. the "params" response should have a property "coords" which give the 2
coords between the line
3. eg. coords:
`coords: [ [61.58708083147317, 386.87942320312504], [61.58708083147317,
72.8954315876116] ]`
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