Beispiel: Zeilen-, Spalten- und Indexoperatoren

Vektoren, Matrizen und Tabellen > Arbeiten mit Arrays > Beispiel: Zeilen-, Spalten- und Indexoperatoren

Beispiel: Zeilen-, Spalten- und Indexoperatoren

1. Definieren Sie eine Matrix der Größe 10 x 10.

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<region id="ID0EOWEMB" top="144" left="24" height="32.714" width="73.83" xml:lang="de" xmlns="http://schemas.mathsoft.com/worksheet50">
  <math xml:lang="de">
    <define xml:lang="de" xmlns="http://schemas.mathsoft.com/math50">
      <apply xml:lang="de">
        <indexer xml:lang="de" />
        <id xml:lang="de" label="None">M</id>
        <sequence xml:lang="de">
          <id xml:lang="de" label="None">i</id>
          <id xml:lang="de" label="None">j</id>
        </sequence>
      </apply>
      <apply xml:lang="de">
        <plus xml:lang="de" />
        <id xml:lang="de">i</id>
        <apply xml:lang="de">
          <pow xml:lang="de" />
          <id xml:lang="de">j</id>
          <real xml:lang="de">2</real>
        </apply>
      </apply>
    </define>
    <resultFormat xml:lang="de">
      <decimal precision="round-trip-decimal-places" show-trailing-zeros="false" radix="dec" imaginary-value="i" xml:lang="de" />
      <matrix size="12,12" offset="0,0" xml:lang="de" />
    </resultFormat>
  </math>
</region>

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<region id="ID0EAXEMB" top="264" left="24" height="154.883" width="235.818333333333" xml:lang="de" xmlns="http://schemas.mathsoft.com/worksheet50">
  <math xml:lang="de">
    <eval xml:lang="de" xmlns="http://schemas.mathsoft.com/math50">
      <id xml:lang="de">M</id>
      <result xml:lang="de">
        <matrix rows="10" cols="10" xml:lang="de">
          <real xml:lang="de">0</real>
          <real xml:lang="de">1</real>
          <real xml:lang="de">2</real>
          <real xml:lang="de">3</real>
          <real xml:lang="de">4</real>
          <real xml:lang="de">5</real>
          <real xml:lang="de">6</real>
          <real xml:lang="de">7</real>
          <real xml:lang="de">8</real>
          <real xml:lang="de">9</real>
          <real xml:lang="de">1</real>
          <real xml:lang="de">2</real>
          <real xml:lang="de">3</real>
          <real xml:lang="de">4</real>
          <real xml:lang="de">5</real>
          <real xml:lang="de">6</real>
          <real xml:lang="de">7</real>
          <real xml:lang="de">8</real>
          <real xml:lang="de">9</real>
          <real xml:lang="de">10</real>
          <real xml:lang="de">4</real>
          <real xml:lang="de">5</real>
          <real xml:lang="de">6</real>
          <real xml:lang="de">7</real>
          <real xml:lang="de">8</real>
          <real xml:lang="de">9</real>
          <real xml:lang="de">10</real>
          <real xml:lang="de">11</real>
          <real xml:lang="de">12</real>
          <real xml:lang="de">13</real>
          <real xml:lang="de">9</real>
          <real xml:lang="de">10</real>
          <real xml:lang="de">11</real>
          <real xml:lang="de">12</real>
          <real xml:lang="de">13</real>
          <real xml:lang="de">14</real>
          <real xml:lang="de">15</real>
          <real xml:lang="de">16</real>
          <real xml:lang="de">17</real>
          <real xml:lang="de">18</real>
          <real xml:lang="de">16</real>
          <real xml:lang="de">17</real>
          <real xml:lang="de">18</real>
          <real xml:lang="de">19</real>
          <real xml:lang="de">20</real>
          <real xml:lang="de">21</real>
          <real xml:lang="de">22</real>
          <real xml:lang="de">23</real>
          <real xml:lang="de">24</real>
          <real xml:lang="de">25</real>
          <real xml:lang="de">25</real>
          <real xml:lang="de">26</real>
          <real xml:lang="de">27</real>
          <real xml:lang="de">28</real>
          <real xml:lang="de">29</real>
          <real xml:lang="de">30</real>
          <real xml:lang="de">31</real>
          <real xml:lang="de">32</real>
          <real xml:lang="de">33</real>
          <real xml:lang="de">34</real>
          <real xml:lang="de">36</real>
          <real xml:lang="de">37</real>
          <real xml:lang="de">38</real>
          <real xml:lang="de">39</real>
          <real xml:lang="de">40</real>
          <real xml:lang="de">41</real>
          <real xml:lang="de">42</real>
          <real xml:lang="de">43</real>
          <real xml:lang="de">44</real>
          <real xml:lang="de">45</real>
          <real xml:lang="de">49</real>
          <real xml:lang="de">50</real>
          <real xml:lang="de">51</real>
          <real xml:lang="de">52</real>
          <real xml:lang="de">53</real>
          <real xml:lang="de">54</real>
          <real xml:lang="de">55</real>
          <real xml:lang="de">56</real>
          <real xml:lang="de">57</real>
          <real xml:lang="de">58</real>
          <real xml:lang="de">64</real>
          <real xml:lang="de">65</real>
          <real xml:lang="de">66</real>
          <real xml:lang="de">67</real>
          <real xml:lang="de">68</real>
          <real xml:lang="de">69</real>
          <real xml:lang="de">70</real>
          <real xml:lang="de">71</real>
          <real xml:lang="de">72</real>
          <real xml:lang="de">73</real>
          <real xml:lang="de">81</real>
          <real xml:lang="de">82</real>
          <real xml:lang="de">83</real>
          <real xml:lang="de">84</real>
          <real xml:lang="de">85</real>
          <real xml:lang="de">86</real>
          <real xml:lang="de">87</real>
          <real xml:lang="de">88</real>
          <real xml:lang="de">89</real>
          <real xml:lang="de">90</real>
        </matrix>
      </result>
    </eval>
    <resultFormat xml:lang="de">
      <decimal precision="round-trip-decimal-places" show-trailing-zeros="false" radix="dec" imaginary-value="i" xml:lang="de" />
      <matrix size="12,12" offset="0,0" xml:lang="de" />
    </resultFormat>
  </math>
</region>

2. Verwenden Sie den Spaltenoperator, um Spalte 2 zu extrahieren:

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<region id="ID0EVYEMB" top="576" left="24" height="154.883" width="73.0466666666667" xml:lang="de" xmlns="http://schemas.mathsoft.com/worksheet50">
  <math xml:lang="de">
    <eval xml:lang="de" xmlns="http://schemas.mathsoft.com/math50">
      <apply xml:lang="de">
        <matcol xml:lang="de" />
        <id xml:lang="de">M</id>
        <real xml:lang="de">2</real>
      </apply>
      <result xml:lang="de">
        <matrix rows="10" cols="1" xml:lang="de">
          <real xml:lang="de">4</real>
          <real xml:lang="de">5</real>
          <real xml:lang="de">6</real>
          <real xml:lang="de">7</real>
          <real xml:lang="de">8</real>
          <real xml:lang="de">9</real>
          <real xml:lang="de">10</real>
          <real xml:lang="de">11</real>
          <real xml:lang="de">12</real>
          <real xml:lang="de">13</real>
        </matrix>
      </result>
    </eval>
    <resultFormat xml:lang="de">
      <decimal precision="round-trip-decimal-places" show-trailing-zeros="false" radix="dec" imaginary-value="i" xml:lang="de" />
      <matrix size="12,12" offset="0,0" xml:lang="de" />
    </resultFormat>
  </math>
</region>

3. Verwenden Sie den Zeilenoperator, um Zeile 5 zu extrahieren.

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<region id="ID0EK1EMB" top="432" left="24" height="26.414" width="234.685" xml:lang="de" xmlns="http://schemas.mathsoft.com/worksheet50">
  <math xml:lang="de">
    <eval xml:lang="de" xmlns="http://schemas.mathsoft.com/math50">
      <apply xml:lang="de">
        <matrow xml:lang="de" />
        <id xml:lang="de">M</id>
        <real xml:lang="de">5</real>
      </apply>
      <result xml:lang="de">
        <matrix rows="1" cols="10" xml:lang="de">
          <real xml:lang="de">5</real>
          <real xml:lang="de">6</real>
          <real xml:lang="de">9</real>
          <real xml:lang="de">14</real>
          <real xml:lang="de">21</real>
          <real xml:lang="de">30</real>
          <real xml:lang="de">41</real>
          <real xml:lang="de">54</real>
          <real xml:lang="de">69</real>
          <real xml:lang="de">86</real>
        </matrix>
      </result>
    </eval>
    <resultFormat xml:lang="de">
      <decimal precision="round-trip-decimal-places" show-trailing-zeros="false" radix="dec" imaginary-value="i" xml:lang="de" />
      <matrix size="12,12" offset="0,0" xml:lang="de" />
    </resultFormat>
  </math>
</region>

4. Extrahieren Sie unter Verwendung des Indexoperators das Element (ro, co):

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