mbostock/d3 — pull request #810 by jasondavies (2012-09-18 13:45:25+00:00)
Title: Reset zoom drift vector for new translate/scale.

If a new translate vector or scale is set, the internal drift vector for zooming should be reset appropriately.

See [this StackOverflow question](http://stackoverflow.com/questions/12409955/setting-x-domain-with-setinterval/12443053) and [example](http://bl.ocks.org/3743077) for more details.