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Corrected date on adapter removal notebook
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willbradshaw committed Oct 12, 2023
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4 changes: 2 additions & 2 deletions docs/index.html
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<div class="quarto-listing quarto-listing-container-default" id="listing-listing">
<div class="list quarto-listing-default">
<div class="quarto-post image-right" data-index="0" data-listing-date-sort="1697860800000" data-listing-file-modified-sort="1697146749039" data-listing-date-modified-sort="NaN" data-listing-reading-time-sort="12">
<div class="quarto-post image-right" data-index="0" data-listing-date-sort="1697083200000" data-listing-file-modified-sort="1697148076503" data-listing-date-modified-sort="NaN" data-listing-reading-time-sort="12">
<div class="thumbnail">
<p><a href="./notebooks/2023-10-12_fastp-vs-adapterremoval.html"> <p class="card-img-top"><img src="notebooks/2023-10-12_fastp-vs-adapterremoval_files/figure-html/unnamed-chunk-2-1.png" class="thumbnail-image card-img"/></p> </a></p>
</div>
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<div class="metadata">
<a href="./notebooks/2023-10-12_fastp-vs-adapterremoval.html">
<div class="listing-date">
Oct 21, 2023
Oct 12, 2023
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10 changes: 5 additions & 5 deletions docs/notebooks/2023-10-12_fastp-vs-adapterremoval.html
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<meta name="generator" content="quarto-1.3.450">
<meta name="viewport" content="width=device-width, initial-scale=1.0, user-scalable=yes">
<meta name="author" content="Will Bradshaw">
<meta name="dcterms.date" content="2023-10-21">
<meta name="dcterms.date" content="2023-10-12">
<title>Will’s Public NAO Notebook - Comparing FASTP and AdapterRemoval for MGS pre-processing</title>
<style>
code{white-space: pre-wrap;}
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<div>
<div class="quarto-title-meta-heading">Published</div>
<div class="quarto-title-meta-contents">
<p class="date">October 21, 2023</p>
<p class="date">October 12, 2023</p>
</div>
</div>

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<span id="cb10-2"><a href="#cb10-2" aria-hidden="true" tabindex="-1"></a><span class="an">title:</span><span class="co"> "Comparing FASTP and AdapterRemoval for MGS pre-processing"</span></span>
<span id="cb10-3"><a href="#cb10-3" aria-hidden="true" tabindex="-1"></a><span class="an">subtitle:</span><span class="co"> "Two tools -- how do they perform?"</span></span>
<span id="cb10-4"><a href="#cb10-4" aria-hidden="true" tabindex="-1"></a><span class="an">author:</span><span class="co"> "Will Bradshaw"</span></span>
<span id="cb10-5"><a href="#cb10-5" aria-hidden="true" tabindex="-1"></a><span class="an">date:</span><span class="co"> 2023-10-21</span></span>
<span id="cb10-5"><a href="#cb10-5" aria-hidden="true" tabindex="-1"></a><span class="an">date:</span><span class="co"> 2023-10-12</span></span>
<span id="cb10-6"><a href="#cb10-6" aria-hidden="true" tabindex="-1"></a><span class="an">format:</span></span>
<span id="cb10-7"><a href="#cb10-7" aria-hidden="true" tabindex="-1"></a><span class="co"> html:</span></span>
<span id="cb10-8"><a href="#cb10-8" aria-hidden="true" tabindex="-1"></a><span class="co"> code-fold: true</span></span>
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<span id="cb10-31"><a href="#cb10-31" aria-hidden="true" tabindex="-1"></a>To carry out this test, I selected three pairs of raw Illumina FASTQC files, corresponding to one sample each from two different published studies as well as one dataset provided to us by Marc Johnson:</span>
<span id="cb10-32"><a href="#cb10-32" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb10-33"><a href="#cb10-33" aria-hidden="true" tabindex="-1"></a>| Study | Bioproject | Sample |</span>
<span id="cb10-34"><a href="#cb10-34" aria-hidden="true" tabindex="-1"></a>|------------------------------|-------------------------------------------------------------------|-------------|</span>
<span id="cb10-34"><a href="#cb10-34" aria-hidden="true" tabindex="-1"></a>|-----------------|----------------------------------------|---------------|</span>
<span id="cb10-35"><a href="#cb10-35" aria-hidden="true" tabindex="-1"></a>| Rothman et al. (2021) | <span class="co">[</span><span class="ot">PRJNA729801</span><span class="co">](https://www.ebi.ac.uk/ena/browser/view/PRJNA729801)</span> | SRR19607374 |</span>
<span id="cb10-36"><a href="#cb10-36" aria-hidden="true" tabindex="-1"></a>| Crits-Cristoph et al. (2021) | <span class="co">[</span><span class="ot">PRJNA661613</span><span class="co">](https://www.ebi.ac.uk/ena/browser/view/PRJNA661613)</span> | SRR23998357 |</span>
<span id="cb10-37"><a href="#cb10-37" aria-hidden="true" tabindex="-1"></a>| Johnson (2023) | N/A | COMO4 |</span>
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<span id="cb10-117"><a href="#cb10-117" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb10-118"><a href="#cb10-118" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>As previously observed, the raw data has very high duplicate levels, with only \~26% of sequences estimated by FASTQC to remain after deduplication. Increasing the comparison window to 100bp (from a default of 50bp) increases this to \~35%. Neither tool has much effect on this number -- unsurprisingly, since neither carried out deduplication.</span>
<span id="cb10-119"><a href="#cb10-119" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb10-120"><a href="#cb10-120" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>Finally, adapter removal. Unsurprisingly, the raw data shows substantial adapter content. AdapterRemoval does a good job of removing adapters, resulting in a "pass" grade from FASTQC. Surprisingly, despite trimming adapters from fewer reads, fastp does even better (according to FASTQC) at removing adapters.</span>
<span id="cb10-120"><a href="#cb10-120" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>Finally, adapter removal. Unsurprisingly, the raw data shows substantial adapter content. AdapterRemoval does a good job of removing adapters, resulting in a "pass" grade from FASTQC. Surprisingly, despite trimming adapters from fewer reads, fastp does even better (according to FASTQC) at removing adapters.</span>
<span id="cb10-121"><a href="#cb10-121" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb10-122"><a href="#cb10-122" aria-hidden="true" tabindex="-1"></a><span class="ss">- </span>The images below show raw, fastp, and AR adapter content:</span>
<span id="cb10-123"><a href="#cb10-123" aria-hidden="true" tabindex="-1"></a></span>
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2 changes: 1 addition & 1 deletion docs/search.json
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"href": "index.html",
"title": "Will's Public NAO Notebook",
"section": "",
"text": "Comparing FASTP and AdapterRemoval for MGS pre-processing\n\n\nTwo tools – how do they perform?\n\n\n\n\n\n\nOct 21, 2023\n\n\n\n\n\n\n \n\n\n\n\nHow does Element AVITI sequencing work?\n\n\nFindings of a shallow investigation\n\n\n\n\n\n\nOct 11, 2023\n\n\n\n\n\n\n \n\n\n\n\nExtraction experiment 2: high-level results & interpretation\n\n\nComparing RNA yields and quality across extraction kits for settled solids\n\n\n\n\n\n\nSep 21, 2023\n\n\n\n\n\n\nNo matching items"
"text": "Comparing FASTP and AdapterRemoval for MGS pre-processing\n\n\nTwo tools – how do they perform?\n\n\n\n\n\n\nOct 12, 2023\n\n\n\n\n\n\n \n\n\n\n\nHow does Element AVITI sequencing work?\n\n\nFindings of a shallow investigation\n\n\n\n\n\n\nOct 11, 2023\n\n\n\n\n\n\n \n\n\n\n\nExtraction experiment 2: high-level results & interpretation\n\n\nComparing RNA yields and quality across extraction kits for settled solids\n\n\n\n\n\n\nSep 21, 2023\n\n\n\n\n\n\nNo matching items"
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6 changes: 3 additions & 3 deletions notebooks/2023-10-12_fastp-vs-adapterremoval.qmd
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title: "Comparing FASTP and AdapterRemoval for MGS pre-processing"
subtitle: "Two tools -- how do they perform?"
author: "Will Bradshaw"
date: 2023-10-21
date: 2023-10-12
format:
html:
code-fold: true
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To carry out this test, I selected three pairs of raw Illumina FASTQC files, corresponding to one sample each from two different published studies as well as one dataset provided to us by Marc Johnson:

| Study | Bioproject | Sample |
|------------------------------|-------------------------------------------------------------------|-------------|
|-----------------|----------------------------------------|---------------|
| Rothman et al. (2021) | [PRJNA729801](https://www.ebi.ac.uk/ena/browser/view/PRJNA729801) | SRR19607374 |
| Crits-Cristoph et al. (2021) | [PRJNA661613](https://www.ebi.ac.uk/ena/browser/view/PRJNA661613) | SRR23998357 |
| Johnson (2023) | N/A | COMO4 |
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- As previously observed, the raw data has very high duplicate levels, with only \~26% of sequences estimated by FASTQC to remain after deduplication. Increasing the comparison window to 100bp (from a default of 50bp) increases this to \~35%. Neither tool has much effect on this number -- unsurprisingly, since neither carried out deduplication.

- Finally, adapter removal. Unsurprisingly, the raw data shows substantial adapter content. AdapterRemoval does a good job of removing adapters, resulting in a "pass" grade from FASTQC. Surprisingly, despite trimming adapters from fewer reads, fastp does even better (according to FASTQC) at removing adapters.
- Finally, adapter removal. Unsurprisingly, the raw data shows substantial adapter content. AdapterRemoval does a good job of removing adapters, resulting in a "pass" grade from FASTQC. Surprisingly, despite trimming adapters from fewer reads, fastp does even better (according to FASTQC) at removing adapters.

- The images below show raw, fastp, and AR adapter content:

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