Cheng Zhang
Cheng Zhang
The following is the link for the vega spec in Vega editor to reproduce the issue: [Vega Spec](https://vega.github.io/editor/#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) In my case it's a bar chart with 3 groups and has...
When using gradient color in vega with SVG renderer, vega will always add `href()` as base to gradient ref (related code is [here](https://github.com/vega/vega/blob/main/packages/vega-scenegraph/src/SVGRenderer.js#L352)). This doesn't work for our application where...