How to compare curves

Introduction

You can import or copy curves from different method runs into one chromatogram for comparison. This section is an example of how you can use the function Open to compare to import curves.

Open the dialog box

First open the dialog box Open Curves to Compare. You can either:

  • Select File:Open to compare:Curves.

or

  • Click the Open curves to compare icon.

The Open curves to compare dialog box

The illustration below shows the dialog box Open Curves to Compare.

How to import the curves

The table below describes how to import curves and store them in a new chromatogram.

Step

Action

1

Define search criteria for the folder, result, chromatogram and/or curve name. Use the Browse command buttons.

2

Click Search.

Result: A list of found curves is displayed.

3

Repeat step 1 - 2 to add more curves to the list.

4

  • Select the individual curves that you want to import.

or

  • Click Select all to import all curves.

5

Click the checkbox Store in new chromatogram and enter a name in the text box (Compare is default).

Note: You can also save the curves in the active chromatogram.

6

Select one of the Curve options: Overlay, Stack or Mirror.

Result: This will decide how the curves are displayed.

7

Click OK.

How to set the stack offset

If you selected the Stack option the Shift Curves by Offset dialog box is opened automatically. Adjust the offset distance between the curves to a suitable value.

2005-06-15