ProjectTemplate is not designed to help you write R packages. If you're
looking to do that, you should start by looking at the package.skeleton()
function provided by the utils
package. After that, you might consider
looking into the devtools
package that Hadley Wickham is developing.
If it's not clear to you why ProjectTemplate isn't meant to help you write your own package, here are some important ways in which a statistical analysis project differs from a package:
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