bar_chart tool incorrectly ignores duplicate x-axis labels

[llinvokerl]

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Dify version

0.10.2

Cloud or Self Hosted

Self Hosted (Source)

Steps to reproduce

When creating bar charts using the built-in tool, duplicate labels on the x-axis are automatically filtered out, leading to potential misrepresentation of the data on the chart.

Inputs: {'data': '150;100;200;250', 'x_axis': 'a;b;a;b'}

✔️ Expected Behavior

❌ Actual Behavior

[dosubot]

@llinvokerl Hello! I'm here to help you with your bug report. I can assist you in solving bugs, answering questions, and becoming a contributor while you wait for a human maintainer.

The bar_chart tool does not explicitly handle duplicate x-axis labels in the code. The matplotlib library, which is used for rendering charts, will display x-axis labels as provided, including duplicates. If duplicates are being filtered out, it might be due to some other part of the code or a misunderstanding of how the data is being processed. The current implementation does not include logic to filter out or ignore duplicate x-axis labels ^[1].

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