I am trying to render a line/step graph on Apple Watch using watchOS 2. Unlike iOS 9, watchOS 2 doesn\'t support Quartz. It only supports Core Graphics. I tried writing some cod
Here's the example project that shows how to do dynamic graphs on WatchKit 2.0
https://github.com/vlm/ExampleWatchGraph
The gist of it is in the GraphPainter.swift file, where CoreGraphics is used to draw into an off-screen buffer (as @shu223 suggested), then display this buffer in a WKInterfaceImage.
Animated Watch Interface GIF.