[Bug] Bar positions on timeline

[Lys-is]

Version

5.5.1

Link to Minimal Reproduction

https://codesandbox.io/p/sandbox/apache-echarts-demo-forked-4vg9mg

Steps to Reproduce

just open https://codesandbox.io/p/sandbox/apache-echarts-demo-forked-4vg9mg

The bug is reproduced with the xAxis type = time and add any bars.

Current Behavior

Bars offset totally incorrect!

Expected Behavior

The bars should be positioned exactly in their positions.

Environment

- OS: Ubuntu 20.04.6
- Browser: Chrome 139.0.7258.127
- Framework: Vue@2

Any additional comments?

src/layout/barGrid.ts

let offset = -widthSum / 2;
each(stacks, function (column, stackId) {
    result[coordSysName][stackId] = result[coordSysName][stackId] || {
        bandWidth: bandWidth,
        offset: offset,
        width: column.width
    } as BarWidthAndOffset[string][string];


    offset += column.width * (1 + barGapPercent);
});

if change it to

each(stacks, function (column, stackId) {
    result[coordSysName][stackId] = result[coordSysName][stackId] || {
        bandWidth: bandWidth,
        offset: -column.width / 2,
        width: column.width
    } as BarWidthAndOffset[string][string];
});

Everything is working as it should, but it seems that offset is needed for something :)). I have not found a single case where this would be necessary, everything seems to be working well.

If you tell me where this offset curve is needed, I will try to fix it and send you an pull request.

[helgasoft]

a small change in the data structure could help - Demo

[Lys-is]

@helgasoft yes, but this is exactly the data structure that I need, because I use the "stack". I have shown minimal reproduction

[helgasoft]

Your Min Repro code does not have bar "stack". Stacked bars will not work well on time axis (because of bar width, etc.)
Use category axis - Demo

UPDATE: there is a workaround for time axis from @Griffe27 in #17230 - Demo

[Lys-is]

@helgasoft oke, thanks. You planned to fix time Axis?

[Lys-is]

@helgasoft guys, i have a bad news 💀. With aXis type: 'category' bug reproduced too. I know, i can change data structure, but it will greatly change the logic of my chart. I'll have to use crutches.
I think this bug should be fixed.

https://echarts.apache.org/examples/en/editor.html?c=line-simple&code=PYBwLglsB2AEC8sDeAoWsDOBTAThLGAXLANprrLkWxgCeIWxA5AEYCGOTANFRQMbAANsBwAhWs2x4C3XumhsAto1isOGWdXQYwbPgGtJYfZq3scAdQgATMAAtmARgAMzgKSnq1truJktFKgB1ABubIIAriokTABMzvHcsI4AujzBFArKzICEIIB8IICMIIDSIIBCIIAcIICsIAB0sIAoIIAMICX1sIC8IPWA4iD1gNwgzQAU8fEAlExyFAC-6cFBGbBhkdFxCbFJAMxpo9RZKkz5xeXVdY3NbZ09sP1LwxuwE6PrAYJsLFiCxNMBGHbAAO7EYDhRUZjXi3ajvCh0BjMcyeCg6PSGVQDACssPQ5istgcqhc7jRsG8vlI13BATmUT8i1iqK4yXuMy2uUKpUqNQaTVggEEQPKAdhBACwg9RaZUA8iDnFHDSYBYEBenUR7PV6UDKfH5_AFYIEgyVKrSQ7Yw7XojiY-xOVweQ2YXQGZgo_EBDE2U0482yUaEth-EnXdDkhZ22kANllwUZql2LIO7Oa3P5gpFYoSyIl12lWhD6HlLze1xVvxo6s11DT9NoAEEAB4QIjIUE0YBCSAgN51iuV6s5rw-T2kKnOJJUxwDgbLWlUlbDhIAFkn1KYIb1zD4PiwAHMRLQRtQAPTbxewABEkGUB_IwLGAG4gA

[helgasoft]

I know, i can change data structure, but it will greatly change the logic of my chart.

Yes, that is the method - good data structure = good chart. Demo