How to import and compare chromatograms

Introduction

This section describes

  • how to import chromatograms from other result files,

  • how to compare with chromatograms in an already opened result file.

Commands to use

Two commands in the Evaluation module can be used to import chromatograms from result files into an already opened result file:

  • File:Open to compare

    This is the preferred option when you search for many chromatograms in a specific folder based on defined selection criteria. See “How to import chromatograms with the command File:Open to compare” below.

  • File:Open

    This is the preferred option to import any individual chromatograms from result files in different folders. See “How to import chromatograms with the command File:Open” below.

How to import chromatograms with the command File:Open to compare

The table below describes how to import chromatograms with the File:Open to compare command. The search is performed at specific locations or with specific search criteria. This method is useful if you, for example, want to import chromatograms from all files of a scouting folder.

Step

Action

1

Choose File:Open to compare:Chromatograms in the Evaluation module.

Result: The Open Chromatogram to Compare dialog box is displayed.

2

  • Click the Search button in the Found chromatograms field and a list of chromatograms will be displayed based on the designated search criteria.

  • A new search can be performed with new search criteria without erasing the first found chromatograms from the list.

  • Select the chromatograms that you want to import. If you click the Select All button, all the displayed chromatograms will be imported.

  • If you want to clear the list of displayed chromatograms, click the Clear button.

  • Click OK.

Result: All the selected chromatograms are shown in the Evaluation workspace.

Note: If the names of the imported chromatograms already are used they will be sequentially numbered for identification purposes. Up to 10 chromatograms can be made available at the same time in the Evaluation workspace.

How to import chromatograms with the command File:Open

The table below describes how to import chromatograms one by one, using the command File:Open:

Step

Action

1

Choose File:Open:Chromatogram in the Evaluation module.

Result: The Open Chromatograms dialog box is displayed.

2

Double-click a result file to select it.

Result: All the chromatograms contained in the result file will be displayed in the Available field.

3

  • Select the chromatogram(s) of interest and click the Select button.

Result: Selected chromatograms are added to the Selected chromatograms list.

Note: Chromatograms can be deselected with the Remove button.

4

  • Repeat steps 2-3 if you want to import chromatograms from other result files.

  • Click OK.

Note: If the names of the imported chromatograms already are used they will be sequentially numbered for identification purposes. Up to 10 chromatograms can be made available at the same time in the Evaluation workspace.

How to display and compare the imported chromatograms

The table below describes how to simultaneously display and compare the imported chromatograms:

Step

Action

1

In the Evaluation module, select

  • Window:Tile to display the chromatograms side by side.

or

  • Window:Cascade to display the chromatograms in layers.

Note: Chromatogram windows can be individually sized and the presentation of the curves changed.

2

Display all chromatograms on the same scale

  • Open the Chromatogram Layout dialog box for any chromatogram

  • Make the changes to the chromatogram axes.

  • Select the Apply to all chromatograms option.

Note: Imported chromatograms cannot be shown with column volume as the X-axis base.

2005-06-15