codeant-ai-for-open-source[bot] commented on PR #36605:
URL: https://github.com/apache/superset/pull/36605#issuecomment-4035969556
## **Sequence Diagram**
This PR updates histogram and boxplot pandas postprocessing to convert
metric columns to numeric using loc assignment after filtering, eliminating
pandas SettingWithCopy warnings without changing the functional data flow.
```mermaid
sequenceDiagram
participant User
participant Backend
participant PandasPostprocessing
participant DataFrame
User->>Backend: Load dashboard with histogram or boxplot
Backend->>PandasPostprocessing: Request chart data transformation
PandasPostprocessing->>DataFrame: Drop rows with empty metric values
PandasPostprocessing->>DataFrame: Convert metric column to numeric using
loc
PandasPostprocessing-->>Backend: Return processed histogram or boxplot
data
Backend-->>User: Render chart with processed data
```
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