Returns the following error:

Error in loadNamespace(name) : there is no package called â€˜sparclâ€™
---------------------------------------------------------------------------
RRuntimeError                             Traceback (most recent call last)
<ipython-input-15-adcdf680eba5> in <module>()
----> 1 sparcl = rpy2.robjects.packages.importr('sparcl', lib_loc=sparcl_dir)

/usr/local/epd/lib/python2.7/site-packages/rpy2-2.3.4-py2.7-linux-x86_64.egg/rpy2/robjects/packages.pyc in importr(name, lib_loc, robject_translations, signature_translation, suppress_messages, on_conflict, data)
    304     if _package_has_namespace(rname, 
    305                               _system_file(package = rname)):
--> 306         env = _get_namespace(rname)
    307         version = _get_namespace_version(rname)[0]
    308         exported_names = set(_get_namespace_exports(rname))

RRuntimeError: Error in loadNamespace(name) : there is no package called â€˜sparclâ€™