___ XCMS analysis summary using Workflow4Metabolomics ___

By: melanie.petera@inrae.fr - Date: 230217-11:15:10

Samples used:

samplefilenamemd5sum*
QC1_014QC1_014.mzML9e093906811d11c0b14de7a9c2171a75
QC1_008QC1_008.mzMLb609cb66b0cd926a833d63cf5c529622
QC1_002QC1_002.mzML79b4ca15faab323ebd6608c5427b5448
HU_neg_192HU_neg_192.mzML5f60b7526c5dbf93972cfe1941739c2c
HU_neg_173HU_neg_173.mzML5a23e8996d4cb5d020c3399f9fad044e
HU_neg_157HU_neg_157.mzMLe1e50308e9c440d885e8530302a1e2a2
HU_neg_123HU_neg_123.mzML77cff3c9ed4a9c00d05ec83308f69d6e
HU_neg_090HU_neg_090.mzML881d4e94b0de1f6aa7ae931e897348c8
HU_neg_048HU_neg_048.mzMLcb133446f5137d0cf50ad9709f9c55f7
Blanc16Blanc16.mzML1f2ab054920c04ebed901942207509be
Blanc10Blanc10.mzML58e12f36b05e51671058b955c5c28d99
Blanc05Blanc05.mzML0a12e74200c736727c73fbb36429d22b

*The program md5sum is designed to verify data integrity. So you can check if the data were uploaded correctly or if the data were changed during the process.

Function launched:

timestamp***functionargumentvalue
Wed Feb 15 11:08:55 2023Peak detection
Object of class:  CentWaveParam 
Parameters:
 ppm: 3 
 peakwidth: 5, 20 
 snthresh: 10 
 prefilter: 3, 5000 
 mzCenterFun: wMean 
 integrate: 1 
 mzdiff: -0.001 
 fitgauss: FALSE 
 noise: 1000 
 verboseColumns: FALSE 
 roiList length: 0 
 firstBaselineCheck TRUE 
 roiScales length: 0 
Wed Feb 15 11:14:01 2023Peak grouping
Object of class:  PeakDensityParam 
Parameters:
 sampleGroups: character of length 12 
 bw: 5 
 minFraction: 0.9 
 minSamples: 1 
 binSize: 0.01 
 maxFeatures: 50 
Wed Feb 15 11:31:52 2023Retention time correction
Object of class:  PeakGroupsParam 
Parameters:
 minFraction: 0.7 
 extraPeaks: 1 
 smooth: loess 
 span: 0.2 
 family: gaussian 
 subset:  
 number of peak groups: 38 
Wed Feb 15 11:37:08 2023Peak grouping
Object of class:  PeakDensityParam 
Parameters:
 sampleGroups: character of length 12 
 bw: 5 
 minFraction: 0.9 
 minSamples: 1 
 binSize: 0.01 
 maxFeatures: 50 
Wed Feb 15 11:57:50 2023Missing peak filling
Object of class:  FillChromPeaksParam 
Parameters:
 expandMz: 0 
 expandRt: 0 
 ppm: 0 

***timestamp format: DD MM dd hh:mm:ss YYYY or yymmdd-hh:mm:ss

Informations about the XCMSnExp object:

MSn experiment data ("XCMSnExp")
Object size in memory: 6.34 Mb
- - - Spectra data - - -
 MS level(s): 1 
 Number of spectra: 21878 
 MSn retention times: 0:0 - 19:0 minutes
- - - Processing information - - -
Concatenated [Wed Feb 15 11:12:56 2023] 
 MSnbase version: 2.16.1 
- - - Meta data  - - -
phenoData
  rowNames: QC1_014.mzML QC1_008.mzML ... Blanc05.mzML (12 total)
  varLabels: sample_name sample_group
  varMetadata: labelDescription
Loaded from:
  [1] QC1_014.mzML...  [12] Blanc05.mzML
  Use 'fileNames(.)' to see all files.
protocolData: none
featureData
  featureNames: F1.S0001 F1.S0002 ... F12.S2022 (21878 total)
  fvarLabels: fileIdx spIdx ... spectrum (35 total)
  fvarMetadata: labelDescription
experimentData: use 'experimentData(object)'
- - - xcms preprocessing - - -
Chromatographic peak detection:
 method: centWave 
 223790 peaks identified in 12 samples.
 On average 18649 chromatographic peaks per sample.
Alignment/retention time adjustment:
 method: peak groups 
Correspondence:
 method: chromatographic peak density 
 5100 features identified.
 Median mz range of features: 0.004679
 Median rt range of features: 1.8432
 4792 filled peaks (on average 399.3333 per sample).

Informations about the xcmsSet object:

An "xcmsSet" object with 12 samples

Time range: 0.5-1139.6 seconds (0-19 minutes)
Mass range: 53.002-989.2216 m/z
Peaks: 223790 (about 18649 per sample)
Peak Groups: 5100 
Sample classes: QC, sample, blk 

Feature detection:
 o Peak picking performed on MS1.
 o Scan range limited to  1 - 2039 
Profile settings: method = bin
                  step = 0.1

Memory usage: 39.5 MB

Citations: