Chart drawing beyond border: What is the reason? How to solve it?

Frequently Asked Questions and Solutions for Chart Overflow Container Borders

During data visualization, the content of the chart exceeds the preset container border is a common problem, affecting the aesthetics and user experience of the chart. This article analyzes the main causes of chart overflow and provides corresponding solutions.

There are two main reasons:

1. The graph grid margin setting is unreasonable

Many chart libraries allow custom grid margins (top, right, bottom, left). If these values ​​are set to 0, the chart contents will be close to the edge of the container, causing overflow. The solution is to set appropriate pixel values ​​for top , right , bottom and left attributes, such as 10px or other values ​​adjusted according to actual conditions.

2. Adaptability problems caused by absolute positioning and fixed size

When using absolute positioning and fixed width and height layout charts, adaptation problems are prone to occur. The developer tests at 100% scaling, but the user device scaling may be 125% or 150%, causing the chart to be misaligned or overflowed.

Solution:

• Simulate different resolutions and scaling for debugging: During the development process, simulate the resolutions and scaling of different devices to ensure that the chart can be displayed correctly in all situations.
• Adaptive layout: Use rem units or other responsive design techniques to enable the chart to be automatically resized according to different screen sizes and scaling to avoid overflow. This can effectively solve chart misalignment and overflow caused by scaling differences.

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