# xyScope Library

**URL:** https://discourse.processing.org/t/xyscope-library/14369
**Category:** Libraries
**Created:** [October 2, 2019, 2:49pm UTC](https://discourse.processing.org/t/xyscope-library/14369 "2019-10-02T14:49:00Z")
**Posts on this page:** 1
**Showing post:** 2

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### Author: ![jeremydouglass](https://yyz2.discourse-cdn.com/flex036/user_avatar/discourse.processing.org/jeremydouglass/32/20_2.png) [@jeremydouglass](https://discourse.processing.org/u/jeremydouglass)
#### Post date: [October 5, 2019, 3:30pm UTC](https://discourse.processing.org/t/xyscope-library/14369/2 "2019-10-05T15:30:13Z")

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You want to change the line color of the drawing output? Did you try setting the processing line color with `stroke()` before calling `xy.drawWave()`?

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