Example: Row, Column, and Index Operators

Vectors, Matrices, and Tables > Working With Arrays > Example: Row, Column, and Index Operators

Example: Row, Column, and Index Operators

1. Define a 10 x 10 matrix:

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<region id="ID0EVHKFB" top="264" left="24" height="154.883" width="235.818333333333" xmlns="http://schemas.mathsoft.com/worksheet50">
  <math>
    <eval xmlns="http://schemas.mathsoft.com/math50">
      <id>M</id>
      <result>
        <matrix rows="10" cols="10">
          <real>0</real>
          <real>1</real>
          <real>2</real>
          <real>3</real>
          <real>4</real>
          <real>5</real>
          <real>6</real>
          <real>7</real>
          <real>8</real>
          <real>9</real>
          <real>1</real>
          <real>2</real>
          <real>3</real>
          <real>4</real>
          <real>5</real>
          <real>6</real>
          <real>7</real>
          <real>8</real>
          <real>9</real>
          <real>10</real>
          <real>4</real>
          <real>5</real>
          <real>6</real>
          <real>7</real>
          <real>8</real>
          <real>9</real>
          <real>10</real>
          <real>11</real>
          <real>12</real>
          <real>13</real>
          <real>9</real>
          <real>10</real>
          <real>11</real>
          <real>12</real>
          <real>13</real>
          <real>14</real>
          <real>15</real>
          <real>16</real>
          <real>17</real>
          <real>18</real>
          <real>16</real>
          <real>17</real>
          <real>18</real>
          <real>19</real>
          <real>20</real>
          <real>21</real>
          <real>22</real>
          <real>23</real>
          <real>24</real>
          <real>25</real>
          <real>25</real>
          <real>26</real>
          <real>27</real>
          <real>28</real>
          <real>29</real>
          <real>30</real>
          <real>31</real>
          <real>32</real>
          <real>33</real>
          <real>34</real>
          <real>36</real>
          <real>37</real>
          <real>38</real>
          <real>39</real>
          <real>40</real>
          <real>41</real>
          <real>42</real>
          <real>43</real>
          <real>44</real>
          <real>45</real>
          <real>49</real>
          <real>50</real>
          <real>51</real>
          <real>52</real>
          <real>53</real>
          <real>54</real>
          <real>55</real>
          <real>56</real>
          <real>57</real>
          <real>58</real>
          <real>64</real>
          <real>65</real>
          <real>66</real>
          <real>67</real>
          <real>68</real>
          <real>69</real>
          <real>70</real>
          <real>71</real>
          <real>72</real>
          <real>73</real>
          <real>81</real>
          <real>82</real>
          <real>83</real>
          <real>84</real>
          <real>85</real>
          <real>86</real>
          <real>87</real>
          <real>88</real>
          <real>89</real>
          <real>90</real>
        </matrix>
      </result>
    </eval>
    <resultFormat>
      <decimal precision="round-trip-decimal-places" show-trailing-zeros="false" radix="dec" imaginary-value="i" />
      <matrix size="12,12" offset="0,0" />
    </resultFormat>
  </math>
</region>

2. Use the column operator to extract column 2:

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3. Use the row operator to extract row 5:

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4. Use the index operator to extract the (ro, co) element:

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