I have a shiny page with a couple of htmlwidgets, including DT and sunburstR, and they work fine. However, I do not manage to get d3heatmap working. It's strange. When I run the app, I see no errors ...

This will download the latest working version of heatmap.js and put it in your bower_components folder. Alternatively you could just download the latest release from github and unzip it. In order to ...