Operations on a Two Spectra

Introduction

These operations produce a new spectrum from the y values of two existing spectra. The x values of one spectrum are interpolated onto those of the other before the operation is carried out. Because of this operations may not be reversible and A + B is not necessarily equal to B + A.

For a general introduction to operations select Operations from the help menu of the operations dialog.

Description

The multiple operations dialog consists of:

a MENUBAR which allows other classes of operation to be selected
an OPTION MENU which allows you to choose between the operations in this class
2 TEXT AREAs, in which to enter spectra numbers, the first spectra preforms the said operation on the second spectra.

Operation

To select one of the Multiple class operations:

alter the current value of the option menu ( see the introductory help for more information about option menus )

select one of the items in the Multiple pulldown menu at the top of the Spectrum Operations Window ( see the introductory help for more information about pulldown menus )

To choose a spectrum ( or several spectra ) to be operated on:

type their numbers into the text area

select them by clicking the left mouse button over them in the the List of Spectra on the main window ( there is more help about using this list under the Spectra List item on the main window Help menu )

To operate on the chosen spectrum:

operate the Operate button

press RETURN

Details of the algorithms used are given in the Motplot Users' Guide.