Hi Eric,

I get this error and then it tries to find spectra in an MzXML file, even 
though I provide mxML in the directory. And the resulting library is empty 
at the end.

Regards,
Srikanth

On Thursday, March 5, 2020 at 12:35:33 PM UTC+11, Eric Deutsch wrote:
>
> Hi Srikanth, I can confirm that SpectraST supports mzML files. In fact we 
> always/only use mzML files.
>
>  
>
> As far as the iRT error, I am not familiar with this. I could only 
> speculate. Maybe Henry or David have ideas? 
>
>  
>
> Thanks,
>
> Eric
>
>  
>
>  
>
> *From:* spctools...@googlegroups.com <javascript:> <
> spctools...@googlegroups.com <javascript:>> *On Behalf Of *Srinivas 
> Srikanth
> *Sent:* Tuesday, March 3, 2020 4:40 PM
> *To:* spctools-discuss <spctools...@googlegroups.com <javascript:>>
> *Subject:* [spctools-discuss] irt issue
>
>  
>
> Hi,
>
>  
>
> I have a pepxml from iprophet combining results from Mascot/X!Tandem and 
> MSGF+. When I am trying to create a spectral library using Spectrast with 
> the following command:
>
>  
>
> spectrast -cNspeclib -cICID-QTOF -cP0.814339 -c_IRTirt.txt 
> -Lspectrastlog_hek.log mascot_xtandem_msgfp_combine.pep.xml
>
>  
>
> I get and error log which says RT inversion detected at iRT 68.168 for 
> some files and then it creates an empty splib file. Can you tell me what 
> does this error exactly mean?
>
>  
>
> ERROR PEPXML IMPORT: RT normalization by linear interpolation. Found 21 
> landmarks in MS run "170825_pc4_hek_2dcon_13". RT inversion detected at iRT 
> = 68.8618. No RT normalization performed.
>
>  
>
> Also, does spectrast support mzml or we always need mzXML?
>
>  
>
> Regards,
>
> Srikanth
>
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