minor code formatting tweaks in intro vignette

inst/doc/miniCRAN-introduction.rmd

@@ -24,11 +24,11 @@ Start by creating the dependency list:
 library("miniCRAN")
 
 # use Revolution Analytics CRAN mirror
-revolution <- c(CRAN="http://cran.microsoft.com")
+revolution <- c(CRAN = "http://cran.microsoft.com")
 
 # Specify list of packages to download
 pkgs <- c("foreach")
-pkgList <- pkgDep(pkgs, repos=revolution, type="source", suggests = FALSE, availPkgs = cranJuly2014)
+pkgList <- pkgDep(pkgs, repos = revolution, type = "source", suggests = FALSE, availPkgs = cranJuly2014)
 pkgList
 ```
 
@@ -39,23 +39,23 @@ Next, create a repository with the function `makeRepo()`.  In this example, get
 dir.create(pth <- file.path(tempdir(), "miniCRAN"))
 
 # Make repo for source and win.binary
-makeRepo(pkgList, path=pth, repos=revolution, type=c("source", "win.binary"))
+makeRepo(pkgList, path = pth, repos = revolution, type = c("source", "win.binary"))
 ```
 
 
 Investigate the repository file structure:
 
 ```{r make-repo-3, eval=FALSE}
 # List all files in miniCRAN
-list.files(pth, recursive=TRUE, full.names=FALSE)
+list.files(pth, recursive = TRUE, full.names = FALSE)
 ```
 
 
 Use `pkgAvail` to list available packages in your repository:
 
 ```{r make-repo-4, eval=FALSE}
 # Check for available packages
-pkgAvail(repos=pth, type="win.binary")[, c(1:3, 5)]
+pkgAvail(repos = pth, type = "win.binary")[, c(1:3, 5)]
 ```
 
 # Install packages from your local repository
@@ -77,8 +77,8 @@ After creating a local miniCRAN repository, additional packages and their depend
 
 ```{r addto-repo-new-1, eval=FALSE}
 # Add new packages (from CRAN) to the miniCRAN repo
-addPackage("Matrix", path=pth, repos=revolution, type=c("source", "win.binary"))
-pkgAvail(repos=pth, type="win.binary")[, c(1:3, 5)]
+addPackage("Matrix", path = pth, repos = revolution, type = c("source", "win.binary"))
+pkgAvail(repos = pth, type = "win.binary")[, c(1:3, 5)]
 ```
 
 The value that is returned (invisibly) via `addPackage` is the number of packages written to the index file, *i.e.*, the total number of packages in the repo of that type.
@@ -91,12 +91,12 @@ To add a specific version of a package from CRAN (or another CRAN-like repositor
 
 ```{r addto-repo-old-1, eval=FALSE}
 # create a data frame with the package and version info
-oldVers <- data.frame(package=c("foreach", "codetools", "iterators"),
-                      version=c("1.4.0", "0.2-7", "1.0.5"),
-                      stringsAsFactors=FALSE)
+oldVers <- data.frame(package = c("foreach", "codetools", "iterators"),
+                      version = c("1.4.0", "0.2-7", "1.0.5"),
+                      stringsAsFactors = FALSE)
 
 # download old source package version and create repo index
-addOldPackage(pkgList, path=pth, vers=oldVers$version, repos=revolution, type="source")
+addOldPackage(pkgList, path = pth, vers = oldVers$version, repos = revolution, type = "source")
 ```
 
 You will get a warning whenever there are multiple versions of a package saved in the repository. Currently, you need to manually remove duplicate versions before rebuilding the repository's package index.
@@ -105,8 +105,8 @@ Note: This last step is important, otherwise you may end up with a repo in an in
 
 ```{r addto-repo-old-2, eval=FALSE}
 # List package versions in the miniCRAN repo (produces warning about duplicates)
-pkgVersionsSrc <- checkVersions(pkgList, path=pth, type="source")
-pkgVersionsBin <- checkVersions(pkgList, path=pth, type="win.binary")
+pkgVersionsSrc <- checkVersions(pkgList, path = pth, type = "source")
+pkgVersionsBin <- checkVersions(pkgList, path = pth, type = "win.binary")
 
 # After inspecting package versions, remove old versions
 basename(pkgVersionsSrc) # duplicate versions
@@ -115,14 +115,14 @@ basename(pkgVersionsBin)
 file.remove(pkgVersionsSrc[c(2,4,6)])
 
 # rebuild the package index after removing duplicate package versions
-updateRepoIndex(pth, type=c("source", "win.binary"))
+updateRepoIndex(pth, type = c("source", "win.binary"))
 ```
 
 To see the updated list of packages available in the miniCRAN repo:
 
 ```{r addto-repo-old-3, eval=FALSE}
-pkgAvail(pth, type="source")[, c(1:3, 5)] # contains the old versions
-pkgAvail(pth, type="win.binary")[, c(1:3, 5)] # contains the current versions
+pkgAvail(pth, type = "source")[, c(1:3, 5)] # contains the old versions
+pkgAvail(pth, type = "win.binary")[, c(1:3, 5)] # contains the current versions
 ```
 
 
@@ -138,17 +138,17 @@ Checking for updated versions of the packages currently stored in the miniCRAN r
 
 ```{r update-repo-1, eval=FALSE}
 # Check if updated packages are available
-oldPackages(path=pth, repos=revolution, type="source")[, 1:3] # should need update
-oldPackages(path=pth, repos=revolution, type="win.binary")[, 1:3] # should be current
+oldPackages(path = pth, repos = revolution, type = "source")[, 1:3] # should need update
+oldPackages(path = pth, repos = revolution, type = "win.binary")[, 1:3] # should be current
 ```
 
 
 Update the versions of the packages currently stored in the miniCRAN repository. By default, a prompt is given to confirm the update for each package. This prompt can be suppressed using `ask=FALSE`, which will update all packages. Be careful using this option if you want to keep certain packages at an older version.
 
 ```{r update-repo-2, eval=FALSE}
 # Update available packages
-updatePackages(path=pth, repos=revolution, type="source", ask=FALSE) # should need update
-updatePackages(path=pth, repos=revolution, type="win.binary", ask=FALSE) # should be current
+updatePackages(path = pth, repos = revolution, type = "source", ask = FALSE) # should need update
+updatePackages(path = pth, repos = revolution, type = "win.binary", ask = FALSE) # should be current
 ```