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<div class="pre" style="margin: 0; padding: 0; font-family: monospace">Hi All<br /> <br /> I'm sorry if my question is "basic", but I've not understood why the following code does not work ... size of i,j,k seems correct</div>
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<div class="pre" style="margin: 0; padding: 0; font-family: monospace">Do I miss something?</div>
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<div class="pre" style="margin: 0; padding: 0; font-family: monospace">Thanks for your time</div>
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<div class="pre" style="margin: 0; padding: 0; font-family: monospace">Paul<br /> <br /> ##############################</div>
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<pre><span>mode</span><span>(</span><span>0</span><span>)</span>
<span>n</span> <span>=</span> <span>10</span><span>;</span>
<span>A</span> <span>=</span> <span>rand</span><span>(</span><span>n</span><span>,</span><span>6</span><span>)</span><span>;</span>
<span>B</span> <span>=</span> <span>zeros</span><span>(</span><span>(</span><span>2</span><span>*</span><span>n</span><span>)</span><span>,</span><span>2</span><span>)</span><span>;</span> <span>C</span> <span>=</span> <span>B</span><span>;</span>
<span>// goal is to get the value of the 1rst and 4th column in 2 lines</span>
<span>i</span> <span>=</span> <span>[</span><span>1</span> <span>:</span> <span>(</span><span>2</span><span>*</span><span>n</span><span>)</span><span>]</span><span>'</span><span>;</span>
<span>j</span> <span>=</span> <span>[</span><span>1</span> <span>:</span> <span>n</span><span>]</span><span>'</span><span>.*.</span><span>ones</span><span>(</span><span>2</span><span>,</span><span>1</span><span>)</span><span>;</span> <span>// gives [1 1 2 2 3 3 .... n n]</span><span>'</span>
<span>k</span> <span>=</span> <span>ones</span><span>(</span><span>n</span><span>,</span><span>1</span><span>)</span><span>.*.</span><span>[</span><span>1</span> <span>4</span><span>]</span><span>'</span><span>;</span> <span>// gives [1 4 1 4 1 4 .... 1 4]</span><span>'</span>
<span>tmp</span> <span>=</span> <span>[</span><span>i</span> <span>j</span> <span>k</span><span>] // to visualize the indexes</span>
<span>//B(i,1) = A(j,k); // does not work??</span>
<span>C</span><span>(</span><span>1</span><span>,</span><span>1</span><span>)</span> <span>=</span> <span>A</span><span>(</span><span>1</span><span>,</span><span>1</span><span>)</span><span>;</span>
<span>C</span><span>(</span><span>2</span><span>,</span><span>1</span><span>)</span> <span>=</span> <span>A</span><span>(</span><span>1</span><span>,</span><span>4</span><span>)</span><span>;</span>
<span>C</span>
<span>A</span></pre>
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