The exciting and also probably anxious moment has arrived and your visualization has now been launched in to the wild!
How, where, and what this launch actually looks like clearly covers a very broad range of possibilities—it might be a chart in a report, a presentation to a board meeting, an infographic in a newspaper, or an interactive web-based project.
Regardless of how this piece exists, in an ideal world you would now seek to assess the visualization's effectiveness and impact in a post-launch setting. I say in an ideal world because sometimes you simply don't have sufficient capacity or resources to allocate to the post-launch evaluation.
However, you should still care to seek an assessment of how well your project has ...