Do you mean mzXML2Search instead of Mascot2XML? I agree that spectrum 
averaging should be a more universal feature; it's something I plan to 
put in msconvert but haven't gotten around to yet. What range of 
settings did you try for spectrum averaging in mzWiff?

-Matt


Bill Nelson wrote:
> We were never able to switch one  of our labs over to TPP because they
> use ABI Q-TOF with Mascot and the Mascot daemon produced an MGF file
> that searched much better that the MGF file produced by mzWiff &
> Mascot2XML. Through postings on this forum we learned that the better
> performance (about 20% more hits) was due to the spectrum averaging
> algorithm used by the daemon. There are settable arguments available
> in the mzWiff program for spectrum averaging but they don't seem to do
> anything in our hands. Plus, in my opinion, the averaging should be
> performed in the Mascot2XML program, leaving the mzXML to reflect the
> original raw data.
> Has anybody had any experience in addressing this issue with wiff to
> mgf?
>
> Thanks,
> Bill
>
> On Feb 16, 1:13 pm, Matthew Chambers <[email protected]>
> wrote:
>   
>> It depends what you want to use the MGF for. I think the TPP pipeline
>> for the near future should continue using mxXML2Search for MGF output
>> because of the way Mascot2XML expects the TITLE line to be formatted. In
>> a future msconvert version, scan-number-only files like mzXML or Thermo
>> RAW should convert to the DTA-style TITLE format that TPP is used to
>> (except I don't think it does the 0-padding). On the other hand, if you
>> don't care about using the MGF or its downstream products in the TPP,
>> msconvert is easy to use for this purpose.
>>
>> -Matt
>>
>> Brian Pratt wrote:
>>     
>>> The msconvert tool should handle that:
>>>       
>>> To convert foo.mzxml to foo.mgf
>>>       
>>> msconvert --mgf foo.mzxml
>>>       
>>> -----Original Message-----
>>> From: [email protected]
>>> [mailto:[email protected]] On Behalf Of Bright
>>> Sent: Monday, February 16, 2009 6:20 AM
>>> To: spctools-discuss
>>> Subject: [spctools-discuss] How to convert mzXML file to mgf file
>>>       
>>> Hi everyone
>>>    I can't deal with the problem that convert mzXML file to mgf file.
>>> Could your give me some ideal to over it.
>>>   Thank.
>>>       


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