> For the complete documentation index, see [llms.txt](https://docs.velogicfit.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.velogicfit.com/zh/di-02-jie-shi-yong-velogic-studio/spark-lines.md).

# 拟合日志中的火花线

如何使用火花线可视化一次拟合过程中 MotionMetriqs 的变化

有时，通过图形方式了解某个特定的 MotionMetriq 在一次拟合过程中发生了怎样的变化会很有用，例如在你完成了一个 [持续性测试](/zh/di-04-jie-aero/sustainability-test.md).

Velogic Studio 通过使用名为“Spark Lines”的功能让这一切变得很简单。要查看 spark line，只需点击“SHOW GRID”打开拟合日志网格，然后点击一个或多个身体指标。

你会看到一系列线条显示在拟合日志网格上方：

![显示所选指标彩色趋势线的拟合日志网格 Spark Lines 可视化](https://2529810062-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FjxwtZYYk0lvusnMTywNR%2Fuploads%2Fgit-blob-c0374b596fad48184cb099403040ec6e1f70dbf3%2Fspark-lines-grid-display.png?alt=media)

如果某个指标有左/右数值，你会看到左侧指标用实线表示，右侧用虚线表示。

你可以点击多个指标，这些线条会自动分配不同的颜色。

只需再次点击同一指标，即可关闭该指标的 spark line。


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