Dear community,

I am trying to visualize some of my data over time and face the following problem: Among other, I have a binary variable polcon indicating whether an entity has a political connection or not and variables containing the start and end date of this political connection (in case there is one).

I am now seeking a graphical representation over time showing the proportion of connected entities from ~ 1995-2015. The problem is that I have time durations at hand and not mere time points which are convenient to depict. In my case, the entity would need to be regarded as connected, and accordingly represented in a graph, for all the years falling between its start and end date. So far, I have come up with a graph that only takes into account the start date and sort of visualizes for each year how many politically connections have commenced. That's a good start. but the graph is biased downward and fails to indicate the true percentage of politcally connection since each observation is only counted once.

I am looking forward to your ideas and thoughts!

Thanks a lot!

Marie