Tag Archives: R

Shiny interface for fbroc updated

I am happy to announce an updated shiny interface to my R package fbroc. Before updating the interface further to include the new features of fbroc, I wanted to update the interface first. Fortunately, there is an excellent package for the creation of dashboard interfaces for shiny: shinydashboard. I had to rewrite parts of the… Read More »

Dangers of implicit type conversion in R

As you might be aware, R usually does implicit type conversion of your input variable in the expected type whenever necessary. For example, paste expects characters and therefore works by implicit type conversion of numeric to character, and you do not need to use instead. Usually, this is very convenient. But there are at least… Read More »

fbroc 0.3.0 released!

Yesterday, I submitted fbroc 0.3.0 to CRAN and it was accepted shortly afterwards. By now it should have been built for most platforms. As usual, I will spent the next time to upgrade the Shiny application as well. If you haven’t read it before, the main new feature in 0.3.0 is the analysis of paired… Read More »

Short update on fbroc development

After a long break due to a vacation and other taking care of some other more urgent issues, I have started resuming work on fbroc. I hope to have version 0.3.0 out in a few weeks. The main new feature (handling paired ROC curves) is already completed, but I need to polish the code and… Read More »

fbroc 0.2.1 release

The fbroc 0.2.1 release was added to CRAN yesterday. Actually, I released fbroc 0.2.0 the day before and then had to update again due to a pointer bug found by valgrind as kindly pointed out by Brian Ripley, which did causes crashes or erros in my testing. Further versions will always be tested thoroughly with… Read More »

ROC curves and ties

While working on the next version of fbroc I found a bug that caused fbroc to produce incorrect results when the numerical predictor variable includes ties, that is, if not every value is unique. I have already fixed this bug in the development version, so if you have ties in your predictor I recommend trying… Read More »

fbroc 0.1.0 release

Last week I released my first R-package fbroc. Using fbroc you can use bootstrap analysis to quickly calculate confidence regions for the curve itself as well as derived performance metrics like the AUC. Getting the package published was less work than I expected, because the new book by Hadley Wickham R packages was a big… Read More »