PROS:
- missing data clearly differentiated.
- data points and mouseover tooltips make it clear where metric counts are available.
CONS:
- the lighter shading still overemphasizes missing data (data points with missing data the month before and after are less obvious).
- difficult to notice spikes or trends in views/downloads.
Features:
- dots/circles denote actual datapoints, mouseover shows tooltip
- gaps in data shown with dotted line
- mini 'brush' chart shows the context of the data in focus in the main chart
- x-axis zooming and panning is limited to the range of available data
- y-axis resizes automatically to match the maximum y-value of the data in focus
- buttons zoom focus to an interval equal to one year (if sufficient data), one month, or the range of the data
- text at top changes to indicate the range of data in focus
- when no data is available, displays text instead
- sorts data by date