Metabolomics Society Forum

Software => R => XCMS => Topic started by: bo2014 on December 06, 2014, 10:41:16 AM

Title: Noise parameter for findPeaks.centWave
Post by: bo2014 on December 06, 2014, 10:41:16 AM
Hi,
Does anyone know how to set the value of parameter "noise" in findPeaks.centWave?
Thanks in advance.
Best regards!
Bo
Title: Re: Noise parameter for findPeaks.centWave
Post by: Jan Stanstrup on December 06, 2014, 11:55:02 AM
Usually there is no reason to chance it from the default...
You have some reason to want to change it?
Title: Re: Noise parameter for findPeaks.centWave
Post by: bo2014 on December 06, 2014, 10:35:17 PM
Hi Jan,
Thank you very much for your reply.
Below is a MS1 spectrum. Whether I can set the value according to this spectrum? For example, set the value of noise = 300?

On the other hand, if we have data from blank sample that generated in the same LC and MS conditions, whether we can set the value of noise according to the intensity level from this data?

Best regards!
Bo

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