GraphViz: Windows PATH not set with new installer, issue when calling from R

Question

In an R library, I am using the dot program (from GraphViz) to produce some graphics (usually in png format). dot is a usual executable and I execute i

Answer 1

You have a valid concern, which is why we tried to alter the PATH in previous releases. First, yes, we will probably keep C:\Program Files (x86)\Graphviz(VersionNumber) as the default installation path. Second, if anyone can tell us how to alter the PATH safely at install time, we would appreciate it. Another possibility is to have the installation process set a Graphviz specific variable like GVPATH that records the directory containing dot.