numpy.matrix.all.html

<h1><span class="yiyi-st" id="yiyi-13">numpy.matrix.all</span></h1>
        <blockquote>
        <p>原文：<a href="https://docs.scipy.org/doc/numpy/reference/generated/numpy.matrix.all.html">https://docs.scipy.org/doc/numpy/reference/generated/numpy.matrix.all.html</a></p>
        <p>译者：<a href="https://github.com/wizardforcel">飞龙</a> <a href="http://usyiyi.cn/">UsyiyiCN</a></p>
        <p>校对：（虚位以待）</p>
        </blockquote>
    
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<dt id="numpy.matrix.all"><span class="yiyi-st" id="yiyi-14"> <code class="descclassname">matrix.</code><code class="descname">all</code><span class="sig-paren">(</span><em>axis=None</em>, <em>out=None</em><span class="sig-paren">)</span><a class="reference external" href="http://github.com/numpy/numpy/blob/v1.11.3/numpy/matrixlib/defmatrix.py#L709-L747"><span class="viewcode-link">[source]</span></a></span></dt>
<dd><p><span class="yiyi-st" id="yiyi-15">测试沿给定轴的所有矩阵元素是否为True。</span></p>
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<tr class="field-odd field"><th class="field-name"><span class="yiyi-st" id="yiyi-16">参数：</span></th><td class="field-body"><span class="yiyi-st" id="yiyi-17"><strong>请参阅`numpy.all`获取完整说明</strong></span></td>
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<div class="admonition seealso">
<p class="first admonition-title"><span class="yiyi-st" id="yiyi-18">也可以看看</span></p>
<p class="last"><span class="yiyi-st" id="yiyi-19"><a class="reference internal" href="numpy.all.html#numpy.all" title="numpy.all"><code class="xref py py-obj docutils literal"><span class="pre">numpy.all</span></code></a></span></p>
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<p class="rubric"><span class="yiyi-st" id="yiyi-20">笔记</span></p>
<p><span class="yiyi-st" id="yiyi-21">这与<a class="reference internal" href="numpy.ndarray.all.html#numpy.ndarray.all" title="numpy.ndarray.all"><code class="xref py py-obj docutils literal"><span class="pre">ndarray.all</span></code></a>相同，但它返回一个<a class="reference internal" href="numpy.matrix.html#numpy.matrix" title="numpy.matrix"><code class="xref py py-obj docutils literal"><span class="pre">matrix</span></code></a>对象。</span></p>
<p class="rubric"><span class="yiyi-st" id="yiyi-22">例子</span></p>
<div class="highlight-default"><div class="highlight"><pre><span></span><span class="gp">&gt;&gt;&gt; </span><span class="n">x</span> <span class="o">=</span> <span class="n">np</span><span class="o">.</span><span class="n">matrix</span><span class="p">(</span><span class="n">np</span><span class="o">.</span><span class="n">arange</span><span class="p">(</span><span class="mi">12</span><span class="p">)</span><span class="o">.</span><span class="n">reshape</span><span class="p">((</span><span class="mi">3</span><span class="p">,</span><span class="mi">4</span><span class="p">)));</span> <span class="n">x</span>
<span class="go">matrix([[ 0,  1,  2,  3],</span>
<span class="go">        [ 4,  5,  6,  7],</span>
<span class="go">        [ 8,  9, 10, 11]])</span>
<span class="gp">&gt;&gt;&gt; </span><span class="n">y</span> <span class="o">=</span> <span class="n">x</span><span class="p">[</span><span class="mi">0</span><span class="p">];</span> <span class="n">y</span>
<span class="go">matrix([[0, 1, 2, 3]])</span>
<span class="gp">&gt;&gt;&gt; </span><span class="p">(</span><span class="n">x</span> <span class="o">==</span> <span class="n">y</span><span class="p">)</span>
<span class="go">matrix([[ True,  True,  True,  True],</span>
<span class="go">        [False, False, False, False],</span>
<span class="go">        [False, False, False, False]], dtype=bool)</span>
<span class="gp">&gt;&gt;&gt; </span><span class="p">(</span><span class="n">x</span> <span class="o">==</span> <span class="n">y</span><span class="p">)</span><span class="o">.</span><span class="n">all</span><span class="p">()</span>
<span class="go">False</span>
<span class="gp">&gt;&gt;&gt; </span><span class="p">(</span><span class="n">x</span> <span class="o">==</span> <span class="n">y</span><span class="p">)</span><span class="o">.</span><span class="n">all</span><span class="p">(</span><span class="mi">0</span><span class="p">)</span>
<span class="go">matrix([[False, False, False, False]], dtype=bool)</span>
<span class="gp">&gt;&gt;&gt; </span><span class="p">(</span><span class="n">x</span> <span class="o">==</span> <span class="n">y</span><span class="p">)</span><span class="o">.</span><span class="n">all</span><span class="p">(</span><span class="mi">1</span><span class="p">)</span>
<span class="go">matrix([[ True],</span>
<span class="go">        [False],</span>
<span class="go">        [False]], dtype=bool)</span>
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