/r/base/system.file.html'>system.file</a></span>(<span class='st'>"extdata"</span>, <span class='st'>"dataset2.csv"</span>,
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<span class='no'>data</span><span class='kw'>[[</span><span class='fl'>3</span>]] <span class='kw'>&lt;-</span> <span class='fu'><a href='https://rdrr.io/r/base/matrix.html'>as.matrix</a