cran

Is there a nice way to extract get the R-help page from an installed package in the form of an R object (e.g a list). I would like to expose help pages in the form of standardized JSON or XML schemas. However getting the R-help info from the DB is harder than I thought. I hacked together a while ago to get the HTML of an R help manual page. However I would rather have a general R object that contains this information, that I can render to JSON/XML/HTML, etc. I looked into the helpr package from Hadley, but this seems to be a bit of overkill for my purpose. Edited with suggestion of Hadley You

Does anyone have a paper that explains how the Ckmeans.1d.dp algorithm works? Or: what is the most optimal way to do k-means clustering in one-dimension? Univariate k-means clustering can be solved in O(kn) time (on already sorted input) based on theoretical results on Monge matrices, but the approach was not popular most likely due to numerical instability and also perhaps coding challenges. A better option is an O(knlgn) method that is now implemented in Ckmeans.1d.dp version 3.4.6. This implementation is as fast as heuristic k-means but offers guaranteed optimality, orders of magnitude

I have a general question about how to effectively load any kind of external package into R. I have found that many sources detailing this information are simply insufficient, but I will leave out mentioning those respective URLs. I have successfully loaded external packages into R before, but I am having difficulties loading the fgui package. In my specific case, I cannot load the library fgui into R Studio. First I download directly from CRAN with the command: install.packages("fgui", lib="~/Documents/R_dir") This works fine for me. My working directory is set to ~/Documents/R_dir The next