s='kw ns'>::</span><span class='fu'><a href='http://www.rdocumentation.org/packages/sp/topics/is.projected'>proj4string</a></span>(<span class='no'>aggzones</span>) <span class='kw'>&lt;-</span> <span class='kw pkg'>sp</span><span class='kw ns'>::</span><span class='fu'><a href='http://www.rdocumentation.org/packages/sp/topics/is.projected'>proj4string</a></span>(<span class='no'>zones</span>)
<span class='no'>aggzones_sf</span> <span class='kw'>&lt;-</span> <span class='kw pkg'>sf</span><span class='kw ns'