Package ggpmisc is a small set of extensions to ggplot2 (>= 2.0.0) which I hope will be useful when plotting diverse types of data and/or debugging ggplot plots.

Extensions:

• Function for conversion of time series data into data frames that can be

plotted with ggplot.

• Stats for locating and tagging "peaks" and "valleys" (local or global maxima

and minima).

• Stat for generating labels from a lm() model fit, including formatted

equation.

• Debug stats and a geom that print to the console their data input.

Please, see the web site R4Photobiology for details and update notices. Other packages, aimed at easing photobiology-related calculations including the quantification of biologically effective radiation in meteorology are available as part of a suite described at the same website.

The current release of ggpmisc is available through CRAN for R (>= 3.2.0).