Search found 5 matches

by nlim
April 5th, 2024, 6:53 am
Forum: How-To Questions & Answers
Topic: Import a batch of files
Replies: 1
Views: 625

Import a batch of files

Hi, Is there a way to do multiple file importation (e.g. shimadzu .gqd files to .gci)? I noticed that when I save an XML script, it only records the parameters applied after opening the imported file like phase roll, baseline corr, etc. The app GUI during importation also has initial parameters like...
by nlim
January 11th, 2024, 10:27 am
Forum: How-To Questions & Answers
Topic: Library search - NIST MS search
Replies: 3
Views: 3390

Re: Library search - NIST MS search

I am using the NIST 2020 version.

I think I just had some different configuration with the NIST MS Search program. When I set the GC image library search configuration to "interactive" and not "batch", hitlist result is consistent.

Thank you!
by nlim
January 9th, 2024, 6:13 am
Forum: How-To Questions & Answers
Topic: Library search - NIST MS search
Replies: 3
Views: 3390

Library search - NIST MS search

Hello, I did a library search in GC image (default configuration). I have noticed that when I try to check on a single blob, view its spectrum and click on search with NIST MS search program from the MS spectrum window, the hit list result changes from the initial results. I have tried the "syn...
by nlim
September 7th, 2023, 4:01 am
Forum: How-To Questions & Answers
Topic: Blob analysis - chemometrics
Replies: 5
Views: 4692

Re: Blob analysis - chemometrics

Thank you very much for your responses. I have a follow-up question (though this might be for another forum topic). I am exploring the m/z intensities (baseline corrected in default MS mode) for use in a prediction model. However, I noticed that some of m/z intensity values are in negative values. I...
by nlim
August 30th, 2023, 2:53 am
Forum: How-To Questions & Answers
Topic: Blob analysis - chemometrics
Replies: 5
Views: 4692

Blob analysis - chemometrics

Dear All, In the current version of GC image, there is a possibility to analyze blobs through PCA. Are the raw data of the blobs based on m/z signal in the whole blob area or the peak area only? Is there a reference documentation on how GC image does the preprocessing and PCA on the raw data? Also, ...