R Users, I?m writing to introduce a new package, forestry. This package offers a series of utility functions to help with reshaping the hierarchy of data tree, and reform the structure of data tree. It is particularly useful in these following ways: 1. Reshape tree data then convert to JSON to fit the (nested) JSON format of your htmlwidget. 2. Manipulate data across a desired level. For example, get `cumsum` data across a desired level in data tree. Hopefully you find this useful. Please feel free to reach out with feedback or questions. CRAN: https://cran.r-project.org/web/packages/forestry/index.html Github: https://github.com/jienagu/forestry Best Regards, Jiena [[alternative HTML version deleted]]