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<html lang="en"><head><meta charset="UTF-8"/><meta name="viewport" content="width=device-width, initial-scale=1.0"/><title>7. Tips and Tricks · Literate.jl</title><link rel="canonical" href="https://fredrikekre.github.io/Literate.jl/v2/tips/"/><link href="https://fonts.googleapis.com/css?family=Lato|Roboto+Mono" rel="stylesheet" type="text/css"/><link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.11.2/css/fontawesome.min.css" rel="stylesheet" type="text/css"/><link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.11.2/css/solid.min.css" rel="stylesheet" type="text/css"/><link href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.11.2/css/brands.min.css" rel="stylesheet" type="text/css"/><link href="https://cdnjs.cloudflare.com/ajax/libs/KaTeX/0.11.1/katex.min.css" rel="stylesheet" type="text/css"/><script>documenterBaseURL=".."</script><script src="https://cdnjs.cloudflare.com/ajax/libs/require.js/2.3.6/require.min.js" data-main="../assets/documenter.js"></script><script src="../siteinfo.js"></script><script src="../../versions.js"></script><link class="docs-theme-link" rel="stylesheet" type="text/css" href="../assets/themes/documenter-dark.css" data-theme-name="documenter-dark"/><link class="docs-theme-link" rel="stylesheet" type="text/css" href="../assets/themes/documenter-light.css" data-theme-name="documenter-light" data-theme-primary/><script src="../assets/themeswap.js"></script><link href="../assets/custom.css" rel="stylesheet" type="text/css"/><link href="../assets/favicon.ico" rel="icon" type="image/x-icon"/></head><body><div id="documenter"><nav class="docs-sidebar"><a class="docs-logo" href="../"><img src="../assets/logo.png" alt="Literate.jl logo"/></a><div class="docs-package-name"><span class="docs-autofit">Literate.jl</span></div><form class="docs-search" action="../search/"><input class="docs-search-query" id="documenter-search-query" name="q" type="text" placeholder="Search docs"/></form><ul class="docs-menu"><li><a class="tocitem" href="../"><strong>1.</strong> Introduction</a></li><li><a class="tocitem" href="../fileformat/"><strong>2.</strong> File Format</a></li><li><a class="tocitem" href="../pipeline/"><strong>3.</strong> Processing pipeline</a></li><li><a class="tocitem" href="../outputformats/"><strong>4.</strong> Output Formats</a></li><li><a class="tocitem" href="../customprocessing/"><strong>5.</strong> Custom pre- and post-processing</a></li><li><a class="tocitem" href="../documenter/"><strong>6.</strong> Interaction with Documenter.jl</a></li><li class="is-active"><a class="tocitem" href><strong>7.</strong> Tips and Tricks</a></li><li><a class="tocitem" href="../generated/example/"><strong>8.</strong> Example</a></li></ul><div class="docs-version-selector field has-addons"><div class="control"><span class="docs-label button is-static is-size-7">Version</span></div><div class="docs-selector control is-expanded"><div class="select is-fullwidth is-size-7"><select id="documenter-version-selector"></select></div></div></div></nav><div class="docs-main"><header class="docs-navbar"><nav class="breadcrumb"><ul class="is-hidden-mobile"><li class="is-active"><a href><strong>7.</strong> Tips and Tricks</a></li></ul><ul class="is-hidden-tablet"><li class="is-active"><a href><strong>7.</strong> Tips and Tricks</a></li></ul></nav><div class="docs-right"><a class="docs-edit-link" href="https://github.com/fredrikekre/Literate.jl/blob/master/docs/src/tips.md" title="Edit on GitHub"><span class="docs-icon fab"></span><span class="docs-label is-hidden-touch">Edit on GitHub</span></a><a class="docs-settings-button fas fa-cog" id="documenter-settings-button" href="#" title="Settings"></a><a class="docs-sidebar-button fa fa-bars is-hidden-desktop" id="documenter-sidebar-button" href="#"></a></div></header><article class="content" id="documenter-page"><h1 id="tips-and-tricks"><a class="docs-heading-anchor" href="#tips-and-tricks"><strong>7.</strong> Tips and Tricks</a><a id="tips-and-tricks-1"></a><a class="docs-heading-anchor-permalink" href="#tips-and-tricks" title="Permalink"></a></h1><p>This section lists some tips and tricks that might be useful for using Literate.</p><h3 id="notebook-filesize"><a class="docs-heading-anchor" href="#notebook-filesize">Filesize of generated notebooks</a><a id="notebook-filesize-1"></a><a class="docs-heading-anchor-permalink" href="#notebook-filesize" title="Permalink"></a></h3><p>When Literate executes a notebook the return value, i.e. the result of the last Julia expression in each cell is captured. By default Literate generates multiple renderings of the result in different output formats or <a href="https://en.wikipedia.org/wiki/MIME">MIME</a>s, just like <a href="https://github.com/JuliaLang/IJulia.jl">IJulia.jl</a> does. All of these renderings are embedded in the notebook and it is up to the notebook frontend viewer to select the most appropriate format to show to the user.</p><p>A common example is images, which can often be displayed in multiple formats, e.g. PNG (<code>image/png</code>), SVG (<code>image/svg+xml</code>) and HTML (<code>text/html</code>). As a result, the filesize of the generated notebook can become large.</p><p>In order to remedy this you can use the clever Julia package <a href="https://github.com/tkf/DisplayAs.jl"><code>DisplayAs</code></a> to limit the output capabilities of and object. For example, to "force" an image to be captures as <code>image/png</code> only, you can use</p><pre><code class="language-julia">import DisplayAs |
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img = plot(...) |
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img = DisplayAs.PNG(img)</code></pre><p>This can save some memory, since the image is never captured in e.g. SVG or HTML formats.</p><div class="admonition is-info"><header class="admonition-header">Note</header><div class="admonition-body"><p>It is best to always let the object be showable as <code>text/plain</code>. This can be achieved by nested calls to <code>DisplayAs</code> output types. For example, to limit an image <code>img</code> to be showable as just <code>image/png</code> and <code>text/plain</code> you can use</p><pre><code class="language-julia">img = plot(...) |
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img = DisplayAs.Text(DisplayAs.PNG(img))</code></pre></div></div></article><nav class="docs-footer"><a class="docs-footer-prevpage" href="../documenter/">« <strong>6.</strong> Interaction with Documenter.jl</a><a class="docs-footer-nextpage" href="../generated/example/"><strong>8.</strong> Example »</a><div class="flexbox-break"></div><p class="footer-message">Powered by <a href="https://github.com/JuliaDocs/Documenter.jl">Documenter.jl</a> and the <a href="https://julialang.org/">Julia Programming Language</a>.</p></nav></div><div class="modal" id="documenter-settings"><div class="modal-background"></div><div class="modal-card"><header class="modal-card-head"><p class="modal-card-title">Settings</p><button class="delete"></button></header><section class="modal-card-body"><p><label class="label">Theme</label><div class="select"><select id="documenter-themepicker"><option value="documenter-light">documenter-light</option><option value="documenter-dark">documenter-dark</option></select></div></p><hr/><p>This document was generated with <a href="https://github.com/JuliaDocs/Documenter.jl">Documenter.jl</a> on <span class="colophon-date" title="Saturday 12 September 2020 14:59">Saturday 12 September 2020</span>. Using Julia version 1.5.1.</p></section><footer class="modal-card-foot"></footer></div></div></div></body></html>
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