3.1.4. Calculate: evaluate the spectrum

3.1.4.1. Overview

This command evaluates the current model spectrum. When one or more instruments are present, it also calculates the model folded through the instrument. Whenever the user has modified the model or its parameters manually, and wants to plot the spectrum or display model parameters like the flux in a given energy band, this command should be executed first (otherwise the spectrum is not updated). On the other hand, if a spectral fit is done (by typing the fit command) the spectrum will be updated automatically and the calculate command needs not to be given.

3.1.4.2. Syntax

The following syntax rules apply:

calc : Evaluates the spectral model.

3.1.4.3. Examples

calc : Evaluates the spectral model.