packing the various types of data into a zip file makes sense, as does
encoding the specifics as XML. If I had time, I might actually try to
support it with Online Converter for Luminaire Data Files- www.schorsch.com
Obvously, the folks from Dial and Relux created this solution so that
the luminaire manufacturers would not have to prepare two different
packages for each of their softwares anymore (or even more if they want
to support other programs).
While this is certainly a great step in the right direction, I’m still a
little bit disappointed, though… (can’t do right for some people, eh?)
It looks like they will just cram some IES/Eulumdat files in there,
are then attached via XML to certain surfaces. (In the
they say “we already have Eulumdat, so we don’t need to replace it”).
What I was really hoping for was an XML definition for the acutal
Both IES and Elumndat show their age in a lot of ways. Both are not
stringently enough, which leaves too much wiggle room for the data
At the same time both impose unnecessary limitations on the data they
represent. And thirdly both are not really well structured, with a lot
the information subject to interpretation by humans, while the software
processing them is left guessing about what it really means.
And then there are CIBSE TM14 with even more limitations, an ISO
that has never caught on, and a few more niche formats.
If you’re familiar with the term “technical debt”, this is a perfect
Am I the only one who ever dreamt of a well thought out XML format for
the photometric data?
If that was supported by such a universal package format, then it might
actually get some traction.