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  <blog_title>はしくれエンジニアもどきのメモ</blog_title>
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    <anon>R言語</anon>
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  <description>行列演算 行列の掛け算：%*% abline(a, b)：y切片aと傾きbを持つ直線を引く curve(関数, 最小値, 最大値)：ある関数の曲線を描く関数 &gt; #行列,2×2で初期値0.0&gt; M &lt;- matrix(0.0, 2, 2)&gt; M [,1] [,2][1,] 0 0[2,] 0 0&gt; #1行目と２行目に値を設定（45度の回転行列）&gt; M[1,] &lt;- c( cos(pi / 4), -sin(pi / 4) )&gt; M[2,] &lt;- c( sin(pi / 4), cos(pi / 4) )&gt; M [,1] [,2][1,] 0.7071068 -0.7071068[2,] 0.7…</description>
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  <provider_url>https://hatena.blog</provider_url>
  <published>2014-06-28 22:27:44</published>
  <title>R言語で多変量解析３（行列演算）</title>
  <type>rich</type>
  <url>https://cartman0.hatenablog.com/entry/2014/06/28/222744</url>
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