fix(od): Aggregate-OD shows blank circles in some situations #155
Description
How come that some bubbles on the OD viz are not filled with yellow color and a number? They have a line connection to another bubble but even if one switches origin and destination display, no bubble pops up.
When i increase the filter to "hide smaller than 1", their lines disappear. What is confusing is, that there are "empty" bubbles as well. And I think that, if the data says there is no connection (value 0), then there should be no line.
I have checked with VIA and the bubbles without filling seem to be the ones that have data for one connection in one direction only.
For example, there is only one data set related to stopId 76, that is 105->76 value 1 but no other, i.e. not even 76->105 value 0.
(That happens when one link of the drt_leg file is not listed in the stops file. But I don't remember how we fixed it for the presentation. )