/***********************************************************************//**
* @brief Construct spectral model from XML element
*
* @param[in] spectral XML element containing spectral model information.
*
* @exception GException::model_invalid_spectral
* Invalid spectral model type encountered.
*
* Returns pointer to a spectral model that is defined in an XML element.
***************************************************************************/
GModelSpectral* GCTAModelBackground::xml_spectral(const GXmlElement& spectral) const
{
// Get spectral model type
std::string type = spectral.attribute("type");
// Get spectral model
GModelSpectralRegistry registry;
GModelSpectral* ptr = registry.alloc(type);
// If model if valid then read model from XML file
if (ptr != NULL) {
ptr->read(spectral);
}
// ... otherwise throw an exception
else {
throw GException::model_invalid_spectral(G_XML_SPECTRAL, type);
}
// Return pointer
return ptr;
}