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Fixed the dead URL #126

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Fixed the dead URL #126

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55e0f49
Fixed the dead URL
Brideau Dec 17, 2021
b3af8ca
Fixed column name
Brideau Dec 17, 2021
144efa7
Update chapter-3-obtaining-data.html
Brideau Dec 17, 2021
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6 changes: 3 additions & 3 deletions www/src/2e/chapter-3-obtaining-data.html
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Expand Up @@ -454,7 +454,7 @@ <h2>
<p><span class="callout">➊</span> The <code>-H</code> option specifies that the CSV file has no header.</p>
<p>Let’s demonstrate <code>in2csv</code> using a spreadsheet that contains the 2000 most popular songs according to an annual Dutch marathon radio program <a href="https://www.top2000nl.com">Top 2000</a>.
To extract its data, you invoke <code>in2csv</code> as follows:</p>
<pre><span style="font-weight: bold">$</span> <span style="color: #5f8700">curl</span> <span style="color: #af8700">"https://www.nporadio2.nl/data/download/TOP-2000-2020.xlsx"</span> <span style="color: #af8700">&gt;</span> <span style="text-decoration: underline">top2000.xls
<pre><span style="font-weight: bold">$</span> <span style="color: #5f8700">curl</span> <span style="color: #af8700">"https://cms-assets.nporadio.nl/npoRadio2/TOP-2000-2021.xlsx?v=1639653660"</span> <span style="color: #af8700">&gt;</span> <span style="text-decoration: underline">top2000.xls
x</span>
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
Expand All @@ -464,10 +464,10 @@ <h2>
BadZipFile: File is not a zip file</pre>
<p>Who is Danny Vera? The most popular song is supposed to be <em>Bohemian Rhapsody</em>, of course.
Well, at least Queen appears plenty of times in the Top 2000 so I can’t really complain:</p>
<pre><span style="font-weight: bold">$</span> <span style="color: #5f8700">csvgrep</span> <span style="text-decoration: underline">top2000.csv</span> --columns ARTIEST --regex <span style="color: #af8700">'^Queen$'</span> | <span style="color: #5f8700">csvlook</span> -I <span class="callout">➊</span>
<pre><span style="font-weight: bold">$</span> <span style="color: #5f8700">csvgrep</span> <span style="text-decoration: underline">top2000.csv</span> --columns artiest --regex <span style="color: #af8700">'^Queen$'</span> | <span style="color: #5f8700">csvlook</span> -I <span class="callout">➊</span>
StopIteration:
StopIteration:</pre>
<p><span class="callout">➊</span> The value after the <code>--regex</code> options is a regular expression (or <em>regex</em>). It’s a special syntax for defining patterns. Here, I only want to match artists that exactly match “Queen,” so I use the caret (<code>^</code>) and dollar sign (<code>$</code>) to match the start and end of the values in the column <em><code>ARTIEST</code></em>.</p>
<p><span class="callout">➊</span> The value after the <code>--regex</code> options is a regular expression (or <em>regex</em>). It’s a special syntax for defining patterns. Here, I only want to match artists that exactly match “Queen,” so I use the caret (<code>^</code>) and dollar sign (<code>$</code>) to match the start and end of the values in the column <em><code>artiest</code></em>.</p>
<p>By the way, the tools <code>in2csv</code>, <code>csvgrep</code>, and <code>csvlook</code> are part of CSVkit, which is a collection of command-line tools to work with CSV data.</p>
<p>The format of the file is automatically determined by the extension, <em>.xlsx</em> in this case.
If you were to pipe the data into <code>in2csv</code>, you would have to specify the format explicitly.</p>
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