Looking for something that is well laid out & easy to read.
closed as not constructive by JonW♦ Jun 17 '13 at 9:45
As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references, or expertise, but this question will likely solicit debate, arguments, polling, or extended discussion. If you feel that this question can be improved and possibly reopened, visit the help center for guidance.If this question can be reworded to fit the rules in the help center, please edit the question.
As I understand it, since a Heuristic Evaluation report would show data collected from multiple sources and an aggregate of that data, the simplest format would be a bar chart with overlays.
Having said that, I think adding some design approaches common in infographics might go a long way towards improving legibility and adding impact. While these examples aren't specifically tied to Heuristic Evaluation data, the approach would translate fairly cleanly.
http://www.flickr.com/photos/bartclaeys/3351321706/sizes/o/ (I especially like the circular bar at the bottom.)
http://www.dominicforest.name/wp-content/photo_visualisation/graphical_text_similarity.jpg (A bit more abstract.)
http://www.dominicforest.name/wp-content/photo_visualisation/flare.jpg (Even more abstract.)
I think I would approach a report display by using vertical height to represent positive/negative heuristic value, horizontal value to be the categories evaluated, and colors to indicate either strength of compliancy or to organize sections of the report by sub-categories if there are a significant number of categories.
Hope this helps!