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annotate read_NVC.xml @ 45:eb339c5849bb draft

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author lparsons
date Fri, 26 Sep 2014 15:04:18 -0400
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children 6b33e31bda10
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45
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1 <tool id="rseqc_read_NVC" name="Read NVC" version="2.4">
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2 <description>to check the nucleotide composition bias</description>
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3 <requirements>
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4 <requirement type="package" version="3.0.3">R</requirement>
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5 <requirement type="package" version="1.7.1">numpy</requirement>
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6 <requirement type="package" version="2.4">rseqc</requirement>
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7 </requirements>
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8 <command>
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9 read_NVC.py -i $input -o output $nx
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10 </command>
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11 <stdio>
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12 <exit_code range="1:" level="fatal" description="An error occured during execution, see stderr and stdout for more information" />
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13 <regex match="[Ee]rror" source="both" description="An error occured during execution, see stderr and stdout for more information" />
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14 </stdio>
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15 <inputs>
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16 <param name="input" type="data" format="bam,sam" label="input bam/sam file" />
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17 <param name="nx" type="boolean" value="false" truevalue="-x" falsevalue="" label="Include N,X in NVC plot"/>
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18 </inputs>
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19 <outputs>
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20 <data format="xls" name="outputxls" from_work_dir="output.NVC.xls" label="${tool.name} on ${on_string} (XLS)" />
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21 <data format="txt" name="outputr" from_work_dir="output.NVC_plot.r" label="${tool.name} on ${on_string} (R Script)" />
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22 <data format="pdf" name="outputpdf" from_work_dir="output.NVC_plot.pdf" label="${tool.name} on ${on_string} (PDF)" />
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23 </outputs>
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24 <help>
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25 read_NVC.py
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26 +++++++++++
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27
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28 This module is used to check the nucleotide composition bias. Due to random priming, certain
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29 patterns are over represented at the beginning (5'end) of reads. This bias could be easily
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30 examined by NVC (Nucleotide versus cycle) plot. NVC plot is generated by overlaying all
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31 reads together, then calculating nucleotide composition for each position of read
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32 (or each sequencing cycle). In ideal condition (genome is random and RNA-seq reads is
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33 randomly sampled from genome), we expect A%=C%=G%=T%=25% at each position of reads.
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34
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35 NOTE: this program expect a fixed read length
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36
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37 Inputs
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38 ++++++++++++++
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39
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40 Input BAM/SAM file
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41 Alignment file in BAM/SAM format.
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42
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43 Include N,X in NVC plot
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44 Plots N and X alongside A, T, C, and G in plot.
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45
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46 Output
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47 ++++++++++++++
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48
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49 This module is used to check the nucleotide composition bias. Due to random priming, certain patterns are over represented at the beginning (5'end) of reads. This bias could be easily examined by NVC (Nucleotide versus cycle) plot. NVC plot is generated by overlaying all reads together, then calculating nucleotide composition for each position of read (or each sequencing cycle). In ideal condition (genome is random and RNA-seq reads is randomly sampled from genome), we expect A%=C%=G%=T%=25% at each position of reads.
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50
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51
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52 1. output.NVC.xls: plain text file, each row is position of read (or sequencing cycle), each column is nucleotide (A,C,G,T,N,X)
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53 2. output.NVC_plot.r: R script to generate NVC plot.
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54 3. output.NVC_plot.pdf: NVC plot.
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55
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56
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57 .. image:: http://rseqc.sourceforge.net/_images/NVC_plot.png
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58 :height: 600 px
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59 :width: 600 px
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60 :scale: 80 %
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61
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62 -----
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63
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64 About RSeQC
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65 +++++++++++
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66
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67 The RSeQC_ package provides a number of useful modules that can comprehensively evaluate high throughput sequence data especially RNA-seq data. "Basic modules" quickly inspect sequence quality, nucleotide composition bias, PCR bias and GC bias, while "RNA-seq specific modules" investigate sequencing saturation status of both splicing junction detection and expression estimation, mapped reads clipping profile, mapped reads distribution, coverage uniformity over gene body, reproducibility, strand specificity and splice junction annotation.
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68
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69 The RSeQC package is licensed under the GNU GPL v3 license.
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70
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71 .. image:: http://rseqc.sourceforge.net/_static/logo.png
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72
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73 .. _RSeQC: http://rseqc.sourceforge.net/
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74
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75
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76 </help>
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77 </tool>