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Update documentation

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Allen Downey
2021-03-17 11:26:14 -04:00
parent 638a2aaf93
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37 changed files with 1260 additions and 1382 deletions
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02_coords.html
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@@ -119,12 +119,12 @@
</li>
<li class="toctree-l1">
<a class="reference internal" href="05_join.html">
Joining Tables
5. Joining Tables
</a>
</li>
<li class="toctree-l1">
<a class="reference internal" href="06_photo.html">
Photometry
6. Photometry
</a>
</li>
<li class="toctree-l1">
@@ -1541,7 +1541,7 @@ Created TAP+ (v1.2.1) - Connection:
<p>When you are debugging queries like this, you can use <code class="docutils literal notranslate"><span class="pre">TOP</span></code> to limit the size of the results, but then you still don’t know how big the results will be.</p>
<p>An alternative is to use <code class="docutils literal notranslate"><span class="pre">COUNT</span></code>, which asks for the number of rows that would be selected, but it does not return them.</p>
<p>In the previous query, replace <code class="docutils literal notranslate"><span class="pre">TOP</span> <span class="pre">10</span> <span class="pre">source_id</span></code> with <code class="docutils literal notranslate"><span class="pre">COUNT(source_id)</span></code> and run the query again. How many stars has Gaia identified in the cone we searched?</p>
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<div class="highlight-ipython3 notranslate"><div class="highlight"><pre><span></span><span class="c1"># Solution</span>
@@ -1671,7 +1671,7 @@ These are the coordinates shown in the figure from the paper, above.</p>
<li><p>Transform it to the ICRS frame.</p></li>
</ol>
<p>Hint: Because ICRS is built into Astropy, you can specify it by name, <code class="docutils literal notranslate"><span class="pre">icrs</span></code> (as we did with <code class="docutils literal notranslate"><span class="pre">galactic</span></code>).</p>
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<div class="highlight-ipython3 notranslate"><div class="highlight"><pre><span></span><span class="c1"># Solution</span>