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Docs: Add more detail about mapping olhc values (#78963)

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docs/sources/panels-visualizations/visualizations/candlestick/index.md
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@ -51,17 +51,29 @@ The **Up color** and **Down color** options select which colors are used when th
## Open, High, Low, Close
The candlestick visualization will attempt to map fields to the appropriate dimension. The **Open**, **High**, **Low**, and **Close** options allow you to map your data to these dimensions if the panel is unable to do so.
{{% admonition type="note" %}}
These values are hidden from the legend.
{{% /admonition %}}
The candlestick visualization will attempt to map fields from your data to the appropriate dimension:
- **Open** corresponds to the starting value of the given period.
- **High** corresponds to the highest value of the given period.
- **Low** corresponds to the lowest value of the given period.
- **Close** corresponds to the final (end) value of the given period.
- **Volume** corresponds to the sample count in the given period. (e.g. number of trades)
- **Volume** corresponds to the sample count in the given period. (for example, number of trades)
{{% admonition type="note" %}}
The candlestick visualization legend doesn't display these values.
{{% /admonition %}}
To properly map these dimensions, the query results table from your data must include _at least_ the following columns:
- timestamp
- open
- high
- low
- close
If your data can't be mapped to these dimensions for some reason (for example, because the column names aren't the same), you can map them manually using the **Open**, **High**, **Low**, and **Close** fields under the **Candlestick** options in the panel editor:
![Open, High, Low, and Close fields in the panel editor](/media/docs/grafana/panels-visualizations/screenshot-olhc-options-10.3.png)
## Additional fields