Re: [Psidev-ms-dev] Unique scan numbers

[Joshua T. <jt...@sy...>]

Hi Fredrik,

Catching up: massWolf simply renumbers all scans starting with "1" in the mzXML output.  Like I said in a different post, we'll be adding a "native scan reference" to mzXML for each vendor software type.

Josh


Fredrik Levander wrote:
> Hi All,
> 
> In QTOF files from Waters with mixed MS1 and MS2 data we have several 
> parallel 'functions' with data being recorded into separate files. The 
> scan numbers are only unique within each function. In the raw data 
> folder we thus have several different spectra with the same scan number 
> (but different source files). When converting this into an mzML file it 
> would be good to keep the original scan numbers which are useful for 
> traceability, but to generate unique spectrum ids. I thus propose that 
> the requirement for unique scanNumbers within an mzML file is removed. 
> However, spectra should not be repeated within the file, so this would 
> NOT be applicable to the dta to mzML conversion use case.
> Would such a change generate problems for the readers?
> How is this solved in MassWolf?
> 
> 
> Regards
> 
> Fredrik
> 
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