This package implements a visual tool to assessing whether the results of a study could be driven by collinearity. The tool focuses in distributed lag models but other regression models can also be explored. The methods are described in the manuscript Reflection on modern methods: Visualizing the effects of collinearity in distributed lag models.
The package is available on CRAN:
https://CRAN.R-project.org/package=collin
An user's guide with detailed examples is available here.