René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Horizontal legend layouts with long series names become vertical","articleBody":"Repro cases: http://codepen.io/anon/pen/RGozGE\n\nI've encountered an odd behavior on horizontal legends with long series names.  If the series names are relatively short, setting `layout.legend.orientation` to `'h'` does indeed produce a reasonably laid out horizontal legend where each line of the legend is filled with as many series as possible (first example in the codepen).  If, however, a series has a very long name, each series is placed on its own row in the legend (effectively becoming a vertical legend), even though there's clearly room for series with shorter names to be placed on the same rows (second example in the codepen).  I think the more logical behavior should be something like [this](http://imgur.com/kDzSsnz), where the series are packed into rows as closely as their names allow.\n\nI'm happy to make a PR to improve this (it should just involve fiddling with the logic near [legend/draw.js:603](https://github.com/plotly/plotly.js/blob/9b249c2f7facb1c323dd226f0b0dbdee91075b7e/src/components/legend/draw.js#L603)).  Should the current behavior be preserved via a new legend attribute whose default is the current behavior and has an option for the new behavior, or is the current behavior never reasonable and should be replaced?\n\nCC to @markwatabe who originally discussed this issue with me and helped with the proposed solution.\n","author":{"url":"https://github.com/mboorstin","@type":"Person","name":"mboorstin"},"datePublished":"2016-09-21T17:50:43.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":14},"url":"https://github.com/960/plotly.js/issues/960"}