Hi Luis,

Thank you for the update and the fix! I already corrected the index numbers
with another one-liner :-)

Best regards
Veit

2017-04-13 20:53 GMT+02:00 Luis Mendoza <luis.mend...@systemsbiology.org>:

> Hello Veit,
>
> Thank you for the report.  We don't often follow the *mgf->mzML*
> workflow, so it took us a while to look into this.  We have fixed this in
> the code, and will be included in our next release of TPP -- aiming for
> ASMS (early June).
>
> In the meantime, here is a one-line perl command that you can use to fix
> your Comet pepXML files and run them through TPP. Just make sure you
> back-up any files in case something gets messed up.  For each file
> "FILE.pep.xml", run the following (watch the quotes!) :
>
> perl -pi -e 's/index=(\d+)/"scan=".($1+1)/eg' FILE.pep.xml
>
> This should work in TPP 4.8.0 as well as 5.0.0.
>
> Hope this (still) helps!
> --Luis
>
>
> On Mon, Jan 30, 2017 at 11:03 PM, Veit Schwaemmle <veitv...@gmail.com>
> wrote:
>
>> Hi guys,
>>
>> When applying the pipeline *msconvert (mgf to mzML) -> comet ->
>> peptideprophet + libra*, I get wrong assignment of the spectra. It looks
>> that identifications are taken looking for *spectrum* while iTRAQ
>> reporter ion intensities were retrieved by matching *spectrumNativeID*.
>> As you can see in the example, the numbering is different (msconvert
>> creates indexes starting by 0 while comet results start by 1) and I get
>> wrong assignment. The results fantastic when correcting the number by
>> increasing the indices by 1 :-).
>>
>> <spectrum_query spectrum="outiTRAQ_fractionation_1-4-5.00022.00022.3"
>> spectrumNativeID="index=21" start_scan="22" end_scan="22"
>> precursor_neutral_mass="2166.082358" assumed_charge="3" index="2"
>> retention_tme_sec="647.9">
>>
>> I suggest that all modules in *xinteract* use the same IDs when looking
>> for spectra/search results. Or is there an easy fix when using command line?
>>
>> Best regards
>> Veit
>>
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