Overlaying Spectra

5.10 Overlaying Spectra

This function is usable for comparison of two or more spectra and other purposes. The following four methods are available.

5.10.1 Insertion from Window

This method is available when two or more spectrum windows are already displayed.

(1) Select the Overlay command from the Data menu.

(2) A dialog box as shown in Fig. 5-19 will appear. The dialog box indicates a sample name for the presently displayed spectrum.

Fig. 5-19

(3) Click the From the windows button. A dialog box as

shown in Fig. 5-20 will appear (refer to (1) in Fig. 5-19).

A list of the sample names for the presently displayed data is indicated in the left box, and a list of the overlaid sample names in the right box.

Fig. 5-20

(4) Select a sample name from the left box. The selected sample name will be highlighted in blue (refer to (2) in Fig. 5-21).

(5) Click the Insert >> button (refer to (3) in Fig. 5-21).

Fig. 5-21

(6) The selected sample name will be added as shown in Fig. 5-22 (refer to (4) in Fig. 5-22).

5.10 Overlaying Spectra

(7) Click the OK button (refer to (5) in Fig. 5-22).

Fig. 5-22

(8) Two spectra will be overlaid on the data processing window. At the same time, a dialog box as shown in Fig. 5-23 will appear. Click the Close button (refer to (6) in Fig. 5-23).

Fig. 5-23

(9) To delete a spectrum, click the corresponding sample name in the above Spectra list (refer to (7) in Fig. 5-23). When the clicked sample name is highlighted in blue, the Delete button becomes active. Click the Delete button (refer to (8) in Fig. 5-23).

5.10.2 Insertion from File

This method overlays spectra by reading them from the already saved data files.

(1) Select the Overlay command from the Data menu.

(2) A dialog box as shown in Fig. 5-24 will appear.

Fig. 5-24

(3) Click the From the files button (refer to (1) in Fig. 5-24).

A dialog box as shown in Fig. 5-25 will open.

(4) Select a file name for overlaid display and click the Open

button (refer to (2) in Fig. 5-25).

Fig. 5-25

5.10 Overlaying Spectra

(5) Two spectra will be overlaid on the data processing window. At the same time, a dialog box as shown in Fig. 5-26 will appear. Click the Close button (refer to (3) in Fig. 5-26).

Fig. 5-26

(6) To delete a spectrum, click the corresponding sample name in the Spectra list (refer to (4) in Fig. 5-26). When the clicked sample name is highlighted in blue, the Delete button becomes active. Click the Delete button (refer to (5) in Fig. 5-26).

5.10.3 Direct Drag-and-Drop Operation

This method is available when two kinds of spectrum windows (already processed windows) are displayed on the screen as shown in Fig. 5-27.

Fig. 5-27

(1) Drag the navy blue frame for a spectrum in the following

procedure (refer to (1) in Fig. 5-27). Move the arrow mouse pointer to the navy blue frame. Click the left button of the mouse. The mouse pointer will change to

(2) With the left mouse button held down, bring the mouse pointer onto a spectrum to be overlaid (refer to (2) in Fig. 5-27). When the mouse pointer changes as shown in Fig. 5-28, drop the mouse (release the left mouse button).

Fig. 5-28

Open files as in 5.10.3, click a spectrum to be overlaid and press [Ctrl] + [C] on the keyboard or select the Copy command from the Edit menu. Click the spectrum on which overlaying is desired and paste the first spectrum by [Ctrl] + [V] to complete overlaying.

5.10.4 Selection of Spectra from Overlay Window

This method allows you to display only the spectra selected from overlaid ones.

(1) Click the (Visible Spectra) button on the Spectrum toolbar. A dialog box as shown in Fig. 5-29 will appear.

(2) Select a desired sample name from the Visible Spectra list. The selected sample name will be highlighted in blue (refer to (1) in Fig. 5-29). (Multiple spectra are selectable by clicking the left button of the mouse on the sample name while holding down the Shift key.)

(3) Click the OK button (refer to (2) in Fig. 5-29).

5.10 Overlaying Spectra

(4) Only the selected spectra will be displayed on the spectrum window. In this example, spectrum No. 1 will be displayed. Printing is made according to the settings on the Report tab page of the Spectrum Properties window.

Fig. 5-29