Installed packages: Bioconductor vs CRAN?

Dear List Members,


Is there a way to extract if an installed package is from Bioconductor
or if it is a regular Cran package?


The information seems to be *not* available in:

installed.packages()


Sincerely,


Leonard

=======

I started to write some utility functions to analyse installed packages.
The latest version is on Github:
https://github.com/discoleo/R/blob/master/Stat/Tools.CRAN.R


# Basic Info:
info.pkg = function(pkg=NULL) {
     if(is.null(pkg)) { pkg = installed.packages(); }
     else {
         all.pkg = installed.packages();
         pkg = all.pkg[all.pkg[,1] %in% pkg, ];
     }
     p = pkg;
     p = as.data.frame(p);
     p = p[ , c("Package", "Version", "Built", "Imports")];
     return(p);
}
# Imported packages:
imports.pkg = function(pkg=NULL, sort=TRUE) {
     p = info.pkg(pkg);
     ### Imported packages
     imp = lapply(p$Imports, function(s) strsplit(s, "[,][ ]*"))
     imp = unlist(imp)
     imp = imp[ ! is.na(imp)]
     # Cleanup:
     imp = sub("[ \n\r\t]*+\\([-,. >=0-9\n\t\r]++\\) *+$", "", imp,
perl=TRUE)
     imp = sub("^[ \n\r\t]++", "", imp, perl=TRUE);
     # Tabulate:
     tbl = as.data.frame(table(imp), stringsAsFactors=FALSE);
     names(tbl)[1] = "Name";
     if(sort) {
         id = order(tbl$Freq, decreasing=TRUE);
         tbl = tbl[id,];
     }
     return(tbl);
}

match.imports = function(pkg, x=NULL, quote=FALSE) {
     if(is.null(x)) x = info.pkg();
     if(quote) {
         pkg = paste0("\\Q", pkg, "\\E");
     }
     # TODO: Use word delimiters?
     # "(<?=^|[ \n\r\t],)"
     if(length(pkg) == 1) {
         isImport = grepl(pkg, x$Imports);
         return(x[isImport, ]);
     } else {
         # TODO: concept?
         rez = lapply(pkg, function(p) x[grepl(p, x$Imports), ]);
         return(rez);
     }
}

Examples:

p = info.pkg();
f = imports.pkg();

### Analyze data

# imported only once: (only in the locally installed packages)
f$Name[f$Freq == 1]

match.imports("hunspell", p)
match.imports("labeling", p)
match.imports("rpart.plot", p)

match.imports(c("pROC", "ROCR"), p)