Search found 202 matches

by qtao
October 11th, 2022, 10:11 am
Forum: How-To Questions & Answers
Topic: Filtering an area
Replies: 1
Views: 1703

Re: Filtering an area

For quantification, if each compound has some distinct ions, you may specify a quantifier and a response factor to calculate the total response. If there are no distinct ions, you may need to adjust areas to be tight around peaks. Alternatively, you may detect peaks on SIC manually or use the Proces...
by qtao
September 1st, 2022, 9:57 am
Forum: Announcements
Topic: Support for v2.9 or older versions has ended
Replies: 0
Views: 4950

Support for v2.9 or older versions has ended

With the release of v2022r1, v2.9 or older versions have reached end-of-life. We are here to provide the information and tips you need for preparing this change. What does end-of-life mean? The end-of-life for the version means that GC Image will no longer provide solutions for any problems related ...
by qtao
July 20th, 2022, 11:20 am
Forum: How-To Questions & Answers
Topic: How to handle No-Reliable-Peak failure when generating a feature template
Replies: 0
Views: 4034

How to handle No-Reliable-Peak failure when generating a feature template

Question: A No-Reliable-Peak error occurs when trying to use the Auto Feature option with the Investigator/Analysis program to generate a feature template for multiple samples. What’s going wrong and how to fix it? Answer: The problem is because the software failed to find any reliable peaks that a...
by qtao
April 1st, 2022, 11:02 am
Forum: How-To Questions & Answers
Topic: 50% peak widths or average 4δ peak width
Replies: 2
Views: 1949

Re: 50% peak widths or average 4δ peak width

Size I(50) is the Column 1 peak width at 50% peak height Size II(50) is the Column 2 peak width at 50% peak height There is no peak width computed based on standard deviation. Assuming all peaks are Gaussian, you may derive the relative peak height. For example, the following post shows that +/- 2δ...
by qtao
February 24th, 2022, 1:51 pm
Forum: Application, Discussion, and Bug Report
Topic: Plugin: Import Image
Replies: 3
Views: 24226

Re: Plugin: Import Image

You don't need Excalibur, but do need to install the MS File Reader 3.0 sp3 downloaded from: https://thermo.flexnetoperations.com/ https://gcimage.com/downloads/guide/Guide-Thermo-DownloadMSFileReader.png If you don't see the reader listed, you may click on Product Search and then search for "M...
by qtao
February 15th, 2022, 12:14 pm
Forum: How-To Questions & Answers
Topic: Undesired compounds
Replies: 1
Views: 1908

Re: Undesired compounds

Depending on how undesired compounds mix with others, you may be able to add a polygon to subdivide the region or exclude the blobs of these compounds.
by qtao
February 10th, 2022, 3:01 pm
Forum: How-To Questions & Answers
Topic: How to view a XML report in Windows 10 or later
Replies: 0
Views: 4069

How to view a XML report in Windows 10 or later

Question: I want to save an summary report. But, I get a blank xml document. Answer: A XML report can be opened in Internet Explorer. In Windows 10 or later, Microsoft Edge is the default browser, but, it only displays the content of a XML report in Internet Explorer mode as shown below: https://gc...
by qtao
December 15th, 2021, 12:33 pm
Forum: How-To Questions & Answers
Topic: Identification of peaks in Image investigator
Replies: 2
Views: 2084

Re: Identification of peaks in Image investigator

If you generated a feature template, make sure to choose Areas to be analyzed by Compound Finder. Also, check if the chromatograms are well covered by the feature areas. If you get fewer unique compounds than expected, try to turn off some checks. For example, If spectra are available, try only the ...
by qtao
December 7th, 2021, 10:02 am
Forum: Application, Discussion, and Bug Report
Topic: Blob Detection on SIC (or CLIC)
Replies: 1
Views: 1736

Re: Blob Detection on SIC (or CLIC)

You can perform local blob detection on SIC or CLIC. If you want to detect all peaks in a region, create and select a rectangle to cover the region on a SIC > Edit > Local Blob Detection. See here for more details: https://www.gcimage.com/gcxgc/usersguide/detection.html#LocalBlobDetection If just a ...
by qtao
November 21st, 2021, 10:34 am
Forum: How-To Questions & Answers
Topic: Command Line Import
Replies: 7
Views: 3197

Re: Command Line Import

Besides what described in User Guide, there are other hidden arguments. We didn't publish them because they are not polished for general usage. But, if you encounter any use case that CLI does not seem to work, just ask us.