A SED data file stored on your local disk may be uploaded into the Iris main display simply by starting the application and selecting the Load File icon on the Iris Desktop; refer to the Loading Data into Iris section of the Iris How-to Guide for a demonstration.
Iris supports VOTable and FITS format SED input files. If you have a SED file in a non-standard format which you would like to import into Iris - e.g., CSV or ASCII - you may do so by first converting the file to a supported format via the SED Builder interface in Iris. The SED Builder tool accepts as ‘non-standard’ any binary or text-based file that does not conform to the IVOA SED, Spectrum and Photometry Data Model; these include FITS and VOTable files which do not conform to the IVOA standards. To learn more about the SED Builder and how to use it to convert your SED data, refer to the Building and Managing SEDs section of the Iris How-to Guide.