update .Rprofile to work with httpgd graphics

Author: hturner

.RProfile

@@ -1,16 +1,14 @@
-# Temporarily use site library to initialize VSCode-R extension.
-# This is where packages required by VSCode-R extension are installed, 
-# specifically jsonlite and rlang for R Session Watcher.
+# Set site library for full use of VSCode-R extension.
+# This is where packages required by VSCode-R extension are installed, specifically
+# - jsonlite and rlang for R Session Watcher (needed to open HTML help pages)
+# - languageserver for code completion
+# - httpgd for http graphics device
 # These are built and installed for the default R version when container is built.
 
-lp <- .libPaths() # already includes site library for default R version.
-.libPaths("/usr/local/lib/R/site-library")
+.Library.site <- "/usr/local/lib/R/site-library"
+# .libPaths() already includes site library for default R version.
+.libPaths(c(.libPaths(), .Library.site))
 
-if (interactive() && Sys.getenv("RSTUDIO") == "") {
-  source(file.path(Sys.getenv(if (.Platform$OS.type == "windows") "USERPROFILE" else "HOME"), ".vscode-R", "init.R"))
-}
-
-options(vsc.dev.args = list(width = 800, height = 600))
-
-# Revert to vanilla .libPaths(), so built R only has base + recommended packages
-.libPaths(lp)
+# For PNG graphics uncomment following lines
+# options(vsc.use_httpgd = FALSE,
+#         vsc.dev.args = list(width = 800, height = 600))

.gitignore

@@ -3,4 +3,5 @@ R-4.1.3.tar.gz
 R-devel/
 R-devel.tar.gz
 /venv
-.cache/
+.cache/
+.Rproj.user