The `connectgaps` [attribute](https://github.com/plotly/plotly.js/blob/7b0036e2998028435be9e0608416eca0eb67fe1e/src/traces/scatter/attributes.js#L143-L152) determines whether _gaps_ in the data (i.e. non-numeric values) are stitched together or not. See http://codepen.io/etpinard/pen/mVNZEV It would be nice to implement `connectgaps` starting in `scatter3d` traces and, down the road, all WebGL trace types.