bchazalet opened a new issue, #21477: URL: https://github.com/apache/echarts/issues/21477
### Version 6.0.0 ### Link to Minimal Reproduction https://echarts.apache.org/examples/en/editor.html?code=bZHtaoMwFIb_exVnUnADC-pa2zrcGIzBbmEiazqzEtBEYjoU8d53YrQfYX9K8_i8r-fEgigCKWQOQOZGQRgvw2C5cn0Ic_-GrZFFFouRPVpsg2xlsS2ytcV2yGKLhQHCjQ1DhFsbRgh3uZM_OY6oFRMcl-hRUUKUitXJeMCjZMcjlQm4pGWNq0sAfkl5ou9CVkQp_ez-ayQ-6Mv44AVtHyB9nhoAvgVv1BSSonozN6bd7BzIsxBHufabrjqIEkUrmIJ5G7yAl3qQgHeXenNUUnWSfL_ojTPAojc9-t9N0bA3mQF_B72WXvwg2nnxH0qwis5HGOf9FKK6EB29KrAF1dUYdxlvWEHd2Wpf8R4tRbHqInT_COPkZ6OhklFUMuNwUo0ltFHT95lSJeN0Ino2Hc-d4Q8&_source=echarts-doc-preview&enc=deflate ### Steps to Reproduce Create a simple line chart with zoom enabled and use `tooltip.valueFormatter` to format the value. ```javascript data = [ ["2016-10-4", 1], ["2016-10-5", 2], ["2016-10-6", 3], ["2016-10-7", 4], ["2016-10-8", 5], ["2016-10-9", 6], ["2016-10-10", 7], ["2016-10-11", 8], ["2016-10-12", 9] ]; option = { tooltip: { trigger: "axis", valueFormatter: (_value, dataIndex) => { const valueFromData = data[dataIndex][1]; const symbol = valueFromData == _value ? '=' : '!='; return`${_value} ${symbol} ${valueFromData}`; } }, toolbox: { feature: { dataZoom: { } } }, dataZoom: { type: "inside" }, xAxis: { type: "time" }, yAxis: { type: "value" }, series: [{ name: "test", type: "line", data }] } ``` ### Current Behavior When using `dataIndex` to get the raw value from underlying data array, the value retrieved is wrong when I zoom onto a few points. It looks like `dataIndex` is only considering the points displayed on the chart , i.e. it's 0 for the first visible point with the zoom on but it prevents me from using it to retrieve the raw value from the underlying data array. No zoom: <img width="285" height="187" alt="Image" src="https://github.com/user-attachments/assets/7a3e2861-295e-47a9-9abf-43f3eb8dc08d"; /> With zoom: <img width="250" height="144" alt="Image" src="https://github.com/user-attachments/assets/5e2bffda-0c8a-4dd5-b9d0-35892729b352"; /> ### Expected Behavior I expect the `dataIndex` to refer to the absolute index of the value within the underlying data array, not matter what the zoom context is. ### Environment ```markdown - OS: macOS Tahoe 26.2 - Browser: Chrome 142.0.7444.176 - Framework: Angular ``` ### Any additional comments? _No response_ -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected] --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
