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04_scrape_pages.html
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<!DOCTYPE html>
<html lang="en"><head>
<meta charset="utf-8">
<meta name="generator" content="quarto-0.9.165">
<meta name="author" content="Christopher Barrie">
<title>Web scraping</title>
<meta name="apple-mobile-web-app-capable" content="yes">
<meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no, minimal-ui">
<link rel="stylesheet" href="04_scrape_pages_files/libs/revealjs/dist/reset.css">
<link rel="stylesheet" href="04_scrape_pages_files/libs/revealjs/dist/reveal.css">
<style>
code{white-space: pre-wrap;}
span.smallcaps{font-variant: small-caps;}
span.underline{text-decoration: underline;}
div.column{display: inline-block; vertical-align: top; width: 50%;}
div.hanging-indent{margin-left: 1.5em; text-indent: -1.5em;}
ul.task-list{list-style: none;}
pre > code.sourceCode { white-space: pre; position: relative; }
pre > code.sourceCode > span { display: inline-block; line-height: 1.25; }
pre > code.sourceCode > span:empty { height: 1.2em; }
.sourceCode { overflow: visible; }
code.sourceCode > span { color: inherit; text-decoration: inherit; }
div.sourceCode { margin: 1em 0; }
pre.sourceCode { margin: 0; }
@media screen {
div.sourceCode { overflow: auto; }
}
@media print {
pre > code.sourceCode { white-space: pre-wrap; }
pre > code.sourceCode > span { text-indent: -5em; padding-left: 5em; }
}
pre.numberSource code
{ counter-reset: source-line 0; }
pre.numberSource code > span
{ position: relative; left: -4em; counter-increment: source-line; }
pre.numberSource code > span > a:first-child::before
{ content: counter(source-line);
position: relative; left: -1em; text-align: right; vertical-align: baseline;
border: none; display: inline-block;
-webkit-touch-callout: none; -webkit-user-select: none;
-khtml-user-select: none; -moz-user-select: none;
-ms-user-select: none; user-select: none;
padding: 0 4px; width: 4em;
color: #aaaaaa;
}
pre.numberSource { margin-left: 3em; border-left: 1px solid #aaaaaa; padding-left: 4px; }
div.sourceCode
{ }
@media screen {
pre > code.sourceCode > span > a:first-child::before { text-decoration: underline; }
}
code span.al { color: #ff0000; font-weight: bold; } /* Alert */
code span.an { color: #60a0b0; font-weight: bold; font-style: italic; } /* Annotation */
code span.at { color: #7d9029; } /* Attribute */
code span.bn { color: #40a070; } /* BaseN */
code span.bu { } /* BuiltIn */
code span.cf { color: #007020; font-weight: bold; } /* ControlFlow */
code span.ch { color: #4070a0; } /* Char */
code span.cn { color: #880000; } /* Constant */
code span.co { color: #60a0b0; font-style: italic; } /* Comment */
code span.cv { color: #60a0b0; font-weight: bold; font-style: italic; } /* CommentVar */
code span.do { color: #ba2121; font-style: italic; } /* Documentation */
code span.dt { color: #902000; } /* DataType */
code span.dv { color: #40a070; } /* DecVal */
code span.er { color: #ff0000; font-weight: bold; } /* Error */
code span.ex { } /* Extension */
code span.fl { color: #40a070; } /* Float */
code span.fu { color: #06287e; } /* Function */
code span.im { } /* Import */
code span.in { color: #60a0b0; font-weight: bold; font-style: italic; } /* Information */
code span.kw { color: #007020; font-weight: bold; } /* Keyword */
code span.op { color: #666666; } /* Operator */
code span.ot { color: #007020; } /* Other */
code span.pp { color: #bc7a00; } /* Preprocessor */
code span.sc { color: #4070a0; } /* SpecialChar */
code span.ss { color: #bb6688; } /* SpecialString */
code span.st { color: #4070a0; } /* String */
code span.va { color: #19177c; } /* Variable */
code span.vs { color: #4070a0; } /* VerbatimString */
code span.wa { color: #60a0b0; font-weight: bold; font-style: italic; } /* Warning */
</style>
<link rel="stylesheet" href="04_scrape_pages_files/libs/revealjs/dist/theme/quarto.css" id="theme">
<script src="04_scrape_pages_files/libs/clipboard/clipboard.min.js"></script>
<script src="04_scrape_pages_files/libs/quarto-html/tabby.min.js"></script>
<script src="04_scrape_pages_files/libs/quarto-html/popper.min.js"></script>
<script src="04_scrape_pages_files/libs/quarto-html/tippy.umd.min.js"></script>
<link href="04_scrape_pages_files/libs/quarto-html/tippy.css" rel="stylesheet">
<link href="04_scrape_pages_files/libs/quarto-html/quarto-html.min.css" rel="stylesheet">
<link id="quarto-text-highlighting-styles" href="04_scrape_pages_files/libs/quarto-html/quarto-syntax-highlighting.css" rel="stylesheet">
<link href="04_scrape_pages_files/libs/revealjs/plugin/quarto-line-highlight/line-highlight.css" rel="stylesheet">
<link href="04_scrape_pages_files/libs/revealjs/plugin/reveal-menu/menu.css" rel="stylesheet">
<link href="04_scrape_pages_files/libs/revealjs/plugin/reveal-menu/quarto-menu.css" rel="stylesheet">
<link href="04_scrape_pages_files/libs/revealjs/plugin/reveal-chalkboard/font-awesome/css/all.css" rel="stylesheet">
<link href="04_scrape_pages_files/libs/revealjs/plugin/reveal-chalkboard/style.css" rel="stylesheet">
<link href="04_scrape_pages_files/libs/revealjs/plugin/quarto-support/footer.css" rel="stylesheet">
<style type="text/css">
.callout {
margin-top: 1em;
margin-bottom: 1em;
border-radius: .25rem;
}
.callout.callout-style-simple {
padding: 0em 0.7em;
border-left: solid #acacac .3rem;
border-right: solid 1px silver;
border-top: solid 1px silver;
border-bottom: solid 1px silver;
display: flex;
}
.callout.callout-style-default {
border-left: solid #acacac .3rem;
border-right: solid 1px silver;
border-top: solid 1px silver;
border-bottom: solid 1px silver;
}
.callout .callout-body-container {
flex-grow: 1;
}
.callout.callout-style-simple .callout-body {
font-size: 1rem;
font-weight: 400;
}
.callout.callout-style-default .callout-body {
font-size: 0.9rem;
font-weight: 400;
}
.callout.callout-captioned.callout-style-simple .callout-body {
margin-top: 0.2em;
}
.callout:not(.callout-captioned) .callout-body {
display: flex;
}
.callout:not(.no-icon).callout-captioned.callout-style-simple .callout-content {
padding-left: 1.6em;
}
.callout.callout-captioned .callout-header {
padding-top: 0.2em;
margin-bottom: -0.2em;
}
.callout.callout-captioned .callout-caption p {
margin-top: 0.5em;
margin-bottom: 0.5em;
}
.callout.callout-captioned.callout-style-simple .callout-content p {
margin-top: 0;
}
.callout.callout-captioned.callout-style-default .callout-content p {
margin-top: 0.7em;
}
.callout.callout-style-simple div.callout-caption {
border-bottom: none;
font-size: .9rem;
font-weight: 600;
opacity: 75%;
}
.callout.callout-style-default div.callout-caption {
border-bottom: none;
font-weight: 600;
opacity: 85%;
font-size: 0.9rem;
padding-left: 0.5em;
padding-right: 0.5em;
}
.callout.callout-style-default div.callout-content {
padding-left: 0.5em;
padding-right: 0.5em;
}
.callout.callout-style-simple .callout-icon::before {
height: 1rem;
width: 1rem;
display: inline-block;
content: "";
background-repeat: no-repeat;
background-size: 1rem 1rem;
}
.callout.callout-style-default .callout-icon::before {
height: 0.9rem;
width: 0.9rem;
display: inline-block;
content: "";
background-repeat: no-repeat;
background-size: 0.9rem 0.9rem;
}
.callout-caption {
display: flex
}
.callout-icon::before {
margin-top: 1rem;
padding-right: .5rem;
}
.callout.no-icon::before {
display: none !important;
}
.callout.callout-captioned .callout-body > :last-child,
.callout.callout-captioned .callout-body > div > :last-child {
margin-bottom: 0.5rem;
}
.callout.callout-captioned .callout-icon::before {
margin-top: .5rem;
padding-right: .5rem;
}
.callout:not(.callout-captioned) .callout-icon::before {
margin-top: 1rem;
padding-right: .5rem;
}
/* Callout Types */
div.callout-note {
border-left-color: #4582ec !important;
}
div.callout-note .callout-icon::before {
background-image: url('data:image/png;base64,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');
}
div.callout-note.callout-style-default .callout-caption {
background-color: #dae6fb
}
div.callout-important {
border-left-color: #d9534f !important;
}
div.callout-important .callout-icon::before {
background-image: url('data:image/png;base64,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');
}
div.callout-important.callout-style-default .callout-caption {
background-color: #f7dddc
}
div.callout-warning {
border-left-color: #f0ad4e !important;
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<body>
<div class="reveal">
<div class="slides">
<section id="title-slide" class="center">
<h1 class="title">Web scraping</h1>
<p class="subtitle">SICSS, 2022</p>
<p class="author">Christopher Barrie</p>
</section>
<section id="scraping-webpages" class="slide level2">
<h2>Scraping webpages</h2>
<div class="cell">
</div>
<div class="cell">
<div class="sourceCode" id="cb1" data-code-line-numbers="|6|8"><pre class="sourceCode numberSource r cell-code number-lines code-with-copy"><code class="sourceCode r"><span id="cb1-1"><a href="#cb1-1"></a><span class="fu">library</span>(dplyr)</span>
<span id="cb1-2"><a href="#cb1-2"></a><span class="fu">library</span>(readr) </span>
<span id="cb1-3"><a href="#cb1-3"></a><span class="fu">library</span>(stringr) </span>
<span id="cb1-4"><a href="#cb1-4"></a><span class="fu">library</span>(rvest)</span>
<span id="cb1-5"><a href="#cb1-5"></a></span>
<span id="cb1-6"><a href="#cb1-6"></a>url <span class="ot"><-</span> <span class="st">"https://wayback.archive-it.org/2358/20120130161341/http://www.tahrirdocuments.org/2011/03/voice-of-the-revolution-3-page-2/"</span></span>
<span id="cb1-7"><a href="#cb1-7"></a></span>
<span id="cb1-8"><a href="#cb1-8"></a>html <span class="ot"><-</span> <span class="fu">read_html</span>(url)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
</div>
</section>
<section id="getting-page-text" class="slide level2">
<h2>Getting page text</h2>
<div class="cell">
<div class="sourceCode" id="cb2" data-code-line-numbers="|2|3|4"><pre class="sourceCode numberSource r cell-code number-lines code-with-copy"><code class="sourceCode r"><span id="cb2-1"><a href="#cb2-1"></a><span class="co"># identify relevant text</span></span>
<span id="cb2-2"><a href="#cb2-2"></a>html <span class="sc">%>%</span></span>
<span id="cb2-3"><a href="#cb2-3"></a> <span class="fu">html_elements</span>(<span class="st">"p"</span>) <span class="sc">%>%</span></span>
<span id="cb2-4"><a href="#cb2-4"></a> <span class="fu">html_text</span>(<span class="at">trim=</span><span class="cn">TRUE</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
</div>
</section>
<section id="getting-page-elements" class="slide level2">
<h2>Getting page elements</h2>
<div class="cell">
<div class="sourceCode" id="cb3" data-code-line-numbers="|2|3|4"><pre class="sourceCode numberSource r cell-code number-lines code-with-copy"><code class="sourceCode r"><span id="cb3-1"><a href="#cb3-1"></a><span class="co"># identify relevant text</span></span>
<span id="cb3-2"><a href="#cb3-2"></a>html <span class="sc">%>%</span> </span>
<span id="cb3-3"><a href="#cb3-3"></a> <span class="fu">html_elements</span>(<span class="st">".calendar"</span>) <span class="sc">%>%</span></span>
<span id="cb3-4"><a href="#cb3-4"></a> <span class="fu">html_text</span>(<span class="at">trim=</span><span class="cn">TRUE</span>)</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
</div>
</section>
<section id="looping-through-urls" class="slide level2">
<h2>Looping through urls</h2>
<div class="cell">
<div class="sourceCode" id="cb4" data-code-line-numbers="|2|3|4|5|6|7|8|9"><pre class="sourceCode numberSource r cell-code number-lines code-with-copy"><code class="sourceCode r"><span id="cb4-1"><a href="#cb4-1"></a>pamlinks_all <span class="ot"><-</span> <span class="fu">character</span>(<span class="dv">0</span>)</span>
<span id="cb4-2"><a href="#cb4-2"></a><span class="cf">for</span> (i <span class="cf">in</span> <span class="fu">seq_along</span>(urlpages_all)) {</span>
<span id="cb4-3"><a href="#cb4-3"></a> url <span class="ot"><-</span> urlpages_all[i]</span>
<span id="cb4-4"><a href="#cb4-4"></a> html <span class="ot"><-</span> <span class="fu">read_html</span>(url)</span>
<span id="cb4-5"><a href="#cb4-5"></a> links <span class="ot"><-</span> <span class="fu">html_elements</span>(html, <span class="st">".post , h2"</span>) <span class="sc">%>%</span></span>
<span id="cb4-6"><a href="#cb4-6"></a> <span class="fu">html_children</span>() <span class="sc">%>%</span></span>
<span id="cb4-7"><a href="#cb4-7"></a> <span class="fu">html_attr</span>(<span class="st">"href"</span>) <span class="sc">%>%</span></span>
<span id="cb4-8"><a href="#cb4-8"></a> <span class="fu">na.omit</span>() <span class="sc">%>%</span></span>
<span id="cb4-9"><a href="#cb4-9"></a> <span class="st">`</span><span class="at">attributes<-</span><span class="st">`</span>(<span class="cn">NULL</span>)</span>
<span id="cb4-10"><a href="#cb4-10"></a> pamlinks_all <span class="ot"><-</span> <span class="fu">c</span>(pamlinks_all, links)</span>
<span id="cb4-11"><a href="#cb4-11"></a>}</span></code><button title="Copy to Clipboard" class="code-copy-button"><i class="bi"></i></button></pre></div>
</div>
</section>
<section id="its-not-always-that-easy" class="slide level2">
<h2>It’s not always that easy…</h2>
<img data-src="images/gesslerscraping.png" class="r-stretch quarto-figure-center"><div class="footer footer-default">
</div>
</section>
</div>
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// viewDistance in order to save resources.
mobileViewDistance: 2,
// The "normal" size of the presentation, aspect ratio will be preserved
// when the presentation is scaled to fit different resolutions. Can be
// specified using percentage units.
width: 1050,
height: 700,
// Factor of the display size that should remain empty around the content
margin: 0.1,
math: {
mathjax: 'https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.0/MathJax.js',
config: 'TeX-AMS_HTML-full',
tex2jax: {
inlineMath: [['\\(','\\)']],
displayMath: [['\\[','\\]']],
balanceBraces: true,
processEscapes: false,
processRefs: true,
processEnvironments: true,
preview: 'TeX',
skipTags: ['script','noscript','style','textarea','pre','code'],
ignoreClass: 'tex2jax_ignore',
processClass: 'tex2jax_process'
},
},
// reveal.js plugins
plugins: [QuartoLineHighlight, PdfExport, RevealMenu, RevealChalkboard, QuartoSupport,
RevealMath,
RevealNotes,
RevealSearch,
RevealZoom
]
});
</script>
<script>
// htmlwidgets need to know to resize themselves when slides are shown/hidden.
// Fire the "slideenter" event (handled by htmlwidgets.js) when the current
// slide changes (different for each slide format).
(function () {
function fireSlideChanged(previousSlide, currentSlide) {
// dispatch for htmlwidgets
const event = window.document.createEvent("Event");
event.initEvent("slideenter", true, true);
window.document.dispatchEvent(event);
// dispatch for shiny
if (window.jQuery) {
if (previousSlide) {
window.jQuery(previousSlide).trigger("hidden");
}
if (currentSlide) {
window.jQuery(currentSlide).trigger("shown");
}
}
}
// hookup for reveal
if (window.Reveal) {
window.Reveal.addEventListener("slidechanged", function(event) {
fireSlideChanged(event.previousSlide, event.currentSlide);
});
}
// hookup for slidy
if (window.w3c_slidy) {
window.w3c_slidy.add_observer(function (slide_num) {
// slide_num starts at position 1
fireSlideChanged(null, w3c_slidy.slides[slide_num - 1]);
});
}
})();
</script>
<script type="application/javascript">
window.document.addEventListener("DOMContentLoaded", function (event) {
const tabsets = window.document.querySelectorAll(".panel-tabset-tabby")
tabsets.forEach(function(tabset) {
const tabby = new Tabby('#' + tabset.id);
});
const clipboard = new window.ClipboardJS('.code-copy-button', {
target: function(trigger) {
return trigger.previousElementSibling;
}
});
clipboard.on('success', function(e) {
// button target
const button = e.trigger;
// don't keep focus
button.blur();
// flash "checked"
button.classList.add('code-copy-button-checked');
setTimeout(function() {
button.classList.remove('code-copy-button-checked');
}, 1000);
// clear code selection
e.clearSelection();
});
function tippyHover(el, contentFn) {
const config = {
allowHTML: true,
content: contentFn,
maxWidth: 500,
delay: 100,
arrow: false,
appendTo: function(el) {
return el.closest('section.slide') || el.parentElement;
},
interactive: true,
interactiveBorder: 10,
theme: 'quarto-reveal',
placement: 'bottom-start'
};
config['offset'] = [0,0];
config['maxWidth'] = 700;
window.tippy(el, config);
}
const noterefs = window.document.querySelectorAll('a[role="doc-noteref"]');
for (var i=0; i<noterefs.length; i++) {
const ref = noterefs[i];
tippyHover(ref, function() {
let href = ref.getAttribute('href');
try { href = new URL(href).hash; } catch {}
const id = href.replace(/^#\/?/, "");
const note = window.document.getElementById(id);
return note.innerHTML;
});
}
var bibliorefs = window.document.querySelectorAll('a[role="doc-biblioref"]');
for (var i=0; i<bibliorefs.length; i++) {
const ref = bibliorefs[i];
const cites = ref.parentNode.getAttribute('data-cites').split(' ');
tippyHover(ref, function() {
var popup = window.document.createElement('div');
cites.forEach(function(cite) {
var citeDiv = window.document.createElement('div');
citeDiv.classList.add('hanging-indent');
citeDiv.classList.add('csl-entry');
var biblioDiv = window.document.getElementById('ref-' + cite);
if (biblioDiv) {
citeDiv.innerHTML = biblioDiv.innerHTML;
}
popup.appendChild(citeDiv);
});
return popup.innerHTML;
});
}
});
</script>
</body></html>