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What's cool is that this "sawtooth" insert size distribution occurs because of the way transposons insert into the major groove of DNA at regular intervals. So this graph shows Igor that his ATAC-seq proof-of-concept experiment worked!
Adding
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custom
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bargraphs
Here we'll create two custom bargraph reports, one for bowtie2 mapping qualities and a second showing genome coverage of the alignments.
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There is just one data file for genome coverage. Unlike the per-sample files, it has a header, with an arbitrary tag for the categories dataset names in the 1st column, then dataset followed by category names and their counts in subsequent columns. (I've re-formatted the data below for readability, but remember that all .tsv file data must be tab-separated.)
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countsample 5k_nuclei none 50k_nuclei (a) none 2140984435 2175228345 (b) 1-2 237947623 351105871 (c) 3-10 308665107 186361275 (d) 11-50 38729079 51+ 5k_nuclei 2140984435 237947623 17356704 (e)308665107 51+ 38729079 4545530 50k_nuclei 2175228345 351105871 186361275 17356704 819579 |
Here we edit the multiqc_config.yaml configuration file to add appropriate custom data sections:
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