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  78.   <div class="section" id="cf-field-equivalent">
    79. 

  79. <h1>cf.Field.equivalent<a class="headerlink" href="#cf-field-equivalent" title="Permalink to this headline">Âś</a></h1>
    80. 

  80. <dl class="method">
    81. 

  81. <dt id="cf.Field.equivalent">
    82. 

  82. <code class="descclassname">Field.</code><code class="descname">equivalent</code><span class="sig-paren">(</span><em>other</em>, <em>rtol=None</em>, <em>atol=None</em>, <em>traceback=False</em><span class="sig-paren">)</span><a class="reference external" href="https://bitbucket.org/cfpython/cf-python/src/v2.0/cf/field.py#field.py-7362"><span class="viewcode-link">[source]</span></a><a class="headerlink" href="#cf.Field.equivalent" title="Permalink to this definition">Âś</a></dt>
    83. 

  83. <dd><p>True if two fields are equivalent, False otherwise</p>
    84. 

  84. <p>two fields are equivalent if:</p>
    85. 

  85. <blockquote>
    86. 

  86. <div><ul class="simple">
    87. 

  87. <li>They have the same identity, as defined by their
    88. 

  88. <a class="reference internal" href="cf.Field.identity.html#cf.Field.identity" title="cf.Field.identity"><code class="xref py py-obj docutils literal"><span class="pre">identity</span></code></a> methods.</li>
    89. 

  89. <li>The same rank, as given by their <a class="reference internal" href="cf.Field.rank.html#cf.Field.rank" title="cf.Field.rank"><code class="xref py py-obj docutils literal"><span class="pre">rank</span></code></a> attributes.</li>
    90. 

  90. <li>Their data arrays are the same after accounting for different but
    91. 

  91. equivalent:<ul>
    92. 

  92. <li>Units</li>
    93. 

  93. <li>Number of size one dimensions (if <em>squeeze</em> is True),</li>
    94. 

  94. <li>Dimension directions (if <em>use_directions</em> is True)</li>
    95. 

  95. <li>Dimension orders (if <em>transpose</em> is set to a dictionary).</li>
    96. 

  96. </ul>
    97. 

  97. </li>
    98. 

  98. <li>Both fields&#8217; domains must have the same rankdimensionality and where a
    99. 

  99. dimension in one field has an identity inferred a 1-d coordinate,
    100. 

  100. the other field has a matching dimension whose identity inferred
    101. 

  101. is inferred from a 1-d coordinate with an equivalent data array.<ul>
    102. 

  102. <li>The rank, as given by their <a href="#id1"><span class="problematic" id="id2">`</span></a>~cf.Field.rank</li>
    103. 

  103. </ul>
    104. 

  104. </li>
    105. 

  105. </ul>
    106. 

  106. </div></blockquote>
    107. 

  107. <div class="admonition seealso">
    108. 

  108. <p class="first admonition-title">See also</p>
    109. 

  109. <p class="last"><a class="reference internal" href="cf.Field.equals.html#cf.Field.equals" title="cf.Field.equals"><code class="xref py py-obj docutils literal"><span class="pre">equals</span></code></a>, <code class="xref py py-obj docutils literal"><span class="pre">set_equals</span></code></p>
    110. 

  110. </div>
    111. 

  111. <table class="docutils field-list" frame="void" rules="none">
    112. 

  112. <col class="field-name" />
    113. 

  113. <col class="field-body" />
    114. 

  114. <tbody valign="top">
    115. 

  115. <tr class="field-odd field"><th class="field-name">Examples 1:</th><td class="field-body"></td>
    116. 

  116. </tr>
    117. 

  117. </tbody>
    118. 

  118. </table>
    119. 

  119. <div class="highlight-python"><div class="highlight"><pre><span></span><span class="gp">&gt;&gt;&gt; </span><span class="n">b</span> <span class="o">=</span> <span class="n">f</span><span class="o">.</span><span class="n">equivalent</span><span class="p">(</span><span class="n">g</span><span class="p">)</span>
    120. 

  120. </pre></div>
    121. 

  121. </div>
    122. 

  122. <table class="docutils field-list" frame="void" rules="none">
    123. 

  123. <col class="field-name" />
    124. 

  124. <col class="field-body" />
    125. 

  125. <tbody valign="top">
    126. 

  126. <tr class="field-odd field"><th class="field-name">Parameters:</th><td class="field-body"><dl class="first docutils">
    127. 

  127. <dt>other: <a class="reference external" href="https://docs.python.org/2.7/library/functions.html#object" title="(in Python v2.7)"><code class="xref py py-obj docutils literal"><span class="pre">object</span></code></a></dt>
    128. 

  128. <dd><p class="first last">The object to compare for equivalence.</p>
    129. 

  129. </dd>
    130. 

  130. <dt>atol: <a class="reference external" href="https://docs.python.org/2.7/library/functions.html#float" title="(in Python v2.7)"><code class="xref py py-obj docutils literal"><span class="pre">float</span></code></a>, optional</dt>
    131. 

  131. <dd><p class="first last">The absolute tolerance for all numerical comparisons, By
    132. 

  132. default the value returned by the <a class="reference internal" href="cf.ATOL.html#cf.ATOL" title="cf.ATOL"><code class="xref py py-obj docutils literal"><span class="pre">cf.ATOL</span></code></a> function is
    133. 

  133. used.</p>
    134. 

  134. </dd>
    135. 

  135. <dt>rtol: <a class="reference external" href="https://docs.python.org/2.7/library/functions.html#float" title="(in Python v2.7)"><code class="xref py py-obj docutils literal"><span class="pre">float</span></code></a>, optional</dt>
    136. 

  136. <dd><p class="first last">The relative tolerance for all numerical comparisons, By
    137. 

  137. default the value returned by the <a class="reference internal" href="cf.RTOL.html#cf.RTOL" title="cf.RTOL"><code class="xref py py-obj docutils literal"><span class="pre">cf.RTOL</span></code></a> function is
    138. 

  138. used.</p>
    139. 

  139. </dd>
    140. 

  140. <dt>traceback: <a class="reference external" href="https://docs.python.org/2.7/library/functions.html#bool" title="(in Python v2.7)"><code class="xref py py-obj docutils literal"><span class="pre">bool</span></code></a>, optional</dt>
    141. 

  141. <dd><p class="first last">If True then print a traceback highlighting where the two
    142. 

  142. fields differ.</p>
    143. 

  143. </dd>
    144. 

  144. </dl>
    145. 

  145. </td>
    146. 

  146. </tr>
    147. 

  147. <tr class="field-even field"><th class="field-name">Returns:</th><td class="field-body"><dl class="first docutils">
    148. 

  148. <dt>out: <a class="reference external" href="https://docs.python.org/2.7/library/functions.html#bool" title="(in Python v2.7)"><code class="xref py py-obj docutils literal"><span class="pre">bool</span></code></a></dt>
    149. 

  149. <dd><p class="first last">Whether or not the two fields are equivalent.</p>
    150. 

  150. </dd>
    151. 

  151. </dl>
    152. 

  152. </td>
    153. 

  153. </tr>
    154. 

  154. <tr class="field-odd field"><th class="field-name">Examples 2:</th><td class="field-body"></td>
    155. 

  155. </tr>
    156. 

  156. </tbody>
    157. 

  157. </table>
    158. 

  158. <div class="highlight-python"><div class="highlight"><pre><span></span><span class="go">&gt;&gt;&gt;</span>
    159. 

  159. </pre></div>
    160. 

  160. </div>
    161. 

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    162. 

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  173.                         title="previous chapter">cf.Field.equals</a></p>
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