How can I write a code in OpenLab CDS that gives me the peak area of a specific compound that appears in my chromatogram?

Hello,

I will assume you are doing this calculation inside a single injection. If so, the example below should be useful. In that example, I am calculating the ratio between 2 peaks (Peak A/ Peak B) at the injection scope. 

Marty

CurrentInjection.AllPeaksAndGroupsByName("Peak A").Select(function(x) x.Peak_Area).First / CurrentInjection.AllPeaksAndGroupsByName("Peak B").Select(function(x) x.Peak_Area).First

Hello,

I will assume you are doing this calculation inside a single injection. If so, the example below should be useful. In that example, I am calculating the ratio between 2 peaks (Peak A/ Peak B) at the injection scope. 

Marty

CurrentInjection.AllPeaksAndGroupsByName("Peak A").Select(function(x) x.Peak_Area).First / CurrentInjection.AllPeaksAndGroupsByName("Peak B").Select(function(x) x.Peak_Area).First

Hi, thanks for your answer. I am having another problem now, which is an error in the constant file saying that is not correctly formatted. What can I do about this??

Hello,

I typically open them in notepad++ which allows me to see the tab character to make sure they are correct. You can also open them in excel and save as text tab delimited. The requirements for the file listed in the help are below. Please note except for the compound name column and header row all other data needs to be numeric values.

Marty