It Looks like WINDOW and Optics Use Their Own Copy of the IGDB, Is That Correct?

Last Updated: 
Wednesday, September 20, 2017

Software/Versions Affected:

Yes, this is (partly) correct. Both Optics and WINDOW install their own copy of the IGDB on your computer, but the spectral data in the two databases is identical. The reason for this is that Optics uses some extra information in the database, that is not used by WINDOW, to enable the user to construct new glazings or deconstruct existing glazings. Furthermore, WINDOW allows the user to save new data to the database, but Optics uses a separate database to store user generated data.

When you update your Optics database and WINDOW database correctly, you will always have the latest and identical version of the IGDB for use with both programs.