For drawing lines with specific coordinate values, you can just encode position (x, y, x2, y2) of lines or rules with constant values? If you have specific us

For drawing lines with specific coordinate values, you can just encode position (x, y, x2, y2) of lines or rules with constant values? If you have specific use case that's really cumbersome in Altair/Vega-Lite, please feel free to file an issue. We're happy to help improve the tool. :) Disclosure: I'm a co-author of Vega-Lite.