xrankanno

Perform MS/MS X rank annotation for mgf file

Gas/Liquid Chromatography-Mass Spectrometer(GC/LC-MS) Data Analysis for Environmental Science. This package covered topics such molecular isotope ratio, matrix effects and Short-Chain Chlorinated Paraffins analysis etc. in environmental analysis.

Miao YU

enviGCMS

GC/LC-MS Data Analysis for Environmental Science

Thanh Wang

xrankanno function

<dl><dt>file</dt>
<dd>mgf file generated from MS/MS data</dd>
<dt>db</dt>
<dd>database could be list object from `getms2pmd`</dd>
<dt>ppm</dt>
<dd>mass accuracy, default 10</dd>
<dt>prems</dt>
<dd>precursor mass range, default 1.1 to include M+H or M-H</dd>
<dt>intc</dt>
<dd>intensity cutoff for peaks. Default 0.1</dd>
<dt>quantile</dt>
<dd>X rank quantiles cutoff for annotation. Default 0.75.</dd></dl>

Arguments

Perform MS/MS X rank annotation for mgf file — xrankanno

<dl>

<dt>file</dt>
<dd>mgf file generated from MS/MS data</dd>


<dt>db</dt>
<dd>database could be list object from `getms2pmd`</dd>


<dt>ppm</dt>
<dd>mass accuracy, default 10</dd>


<dt>prems</dt>
<dd>precursor mass range, default 1.1 to include M+H or M-H</dd>


<dt>intc</dt>
<dd>intensity cutoff for peaks. Default 0.1</dd>


<dt>quantile</dt>
<dd>X rank quantiles cutoff for annotation. Default 0.75.</dd>

</dl>

xrankanno: Perform MS/MS X rank annotation for mgf file

Description

Usage

Value

Arguments