A single line of circles allows for less information density. If you force it to have the same information density then you lose a lot of legibility. Secondly, it&#x27;s possibly harder to see where outliers are. I find this especially true when the vast majority of the dataset is 0, and you&#x27;re looking for the outlying 1s.<p>See this example I mocked up, where each line has the same number of data points: <a href="http:&#x2F;&#x2F;i.imgur.com&#x2F;xRoY41c.png" rel="nofollow">http:&#x2F;&#x2F;i.imgur.com&#x2F;xRoY41c.png</a>