A new version of EulumdatTools 0.9.4.v20110729 was published today at
http://www.fold1.com/eulumdattools/.
We added the conversion of Type B photometry IES files to EULUMDAT to the existing conversion of Type C files.
We also hardened the parser so more files with errors can be opened and displayed, so they can be corrected.
We extended the hardcoded expiry date of this release to well in 2012.
Some background theory
The photometric intensity distribution in EULUMDAT files is similar to that a Type C IES file. The center of beam is straight down (or up) and there are vertical (IES: lateral) planes rotating around this central down axis. In each vertical (IES: lateral) plane there are a number of vertical angles. For more info see
AGI32 website.
Trigonometric conversions
To determine the intensity at a pair of the C and γ angles, we need to interpolate at a corresponding pair of B and β angles. The corresponding B and β angles can be found using these formulas:
tan B = cos C * tan γ
sin β = sin C * sin γ
We added some extra logic to handle the determination of the right quadrant.
Interpolation used
Interpolation is done using standard lagrange over 3 planes and then over the 3 resulting points.
More info
See this
book for more details.
Installation
For use in Eclipse you can use the standard Eclipse update site
http://www.fold1.com/eulumdattools/.
For stand alone RCP versions of EulumdatTools choose your platform:
