Differences in IES format 1995 and before versus 2001 and later

IES files contain 3 number for luminaire luminous length, width and height. By changing sign or setting to zero more shapes than rectangular can be described. In the standard for IES files for 2001 and later the definitions changed. Below is a comparison.

Differences between 1995 and before and 2001 and later IES files.

width	length	height	IES1995 and before	IES2001 and later
0	0	0	point	point
+w	+l	0	rectangular (implied)	rectangular
+w	+l	+h	rectangular (default)	rectangular with sides
-d	0	0	circular	UNDEFINED
-d	-d	0	UNDEFINED	circular
-d	-d	+h	UNDEFINED	vertical circular cylinder
-d	0	+h	vertical circular cylinder	UNDEFINED
-w	-l	0	UNDEFINED	ellipse
-w	-l	+h	UNDEFINED	vertical ellipsoid cylinder
-d	-d	-d	UNDEFINED	sphere
-w	-l	-h	UNDEFINED	ellipsoidal spheroid
-d	+l	-d	UNDEFINED	horizontal circular cylinder along photometric horizontal
0	+l	-d	horizontal circular cylinder along photometric horizontal	UNDEFINED
-w	+l	+h	ellipse allong luminaire length	UNDEFINED
-w	+l	-h	ellipsoid along luminaire length	horizontal ellipsoidal cylinder along photometric horizontal
+w	0	-d	horizontal circular cylinder perpendicular to photometric horizontal	UNDEFINED
+w	-d	-d	UNDEFINED	horizontal circular cylinder perpendicular to photometric horizontal
+w	-l	+h	ellipse cylinder along luminaire width	UNDEFINED
+w	-l	-h	ellipsoid along luminaire width	horizontal ellipsoidal cylinder perpendicular to photometric horizontal
-d	0	-d	sphere	vertical circle facing photometric horizontal
-w	0	-h	UNDEFINED	vertical ellipse facing photometric horizontal

Converting EULUMDAT to IES (How To Video)

Converting EULUMDAT files to IES is easy using EulumdatTools. This video show how easy.

Validating EULUMDAT files (How To Video)

Setting up the EULUMDAT validator can be a bit difficult, but the basics are covered here.

Validating EULUMDAT files

Instructions are in below viseo.

Importing photometric files from ZIP archive (How To Video)

You created the project and now it's time to import some files. You can do that from the file system, but also directly from a ZIP archive.

Importing photometric files from ZIP archive

Select the destination folder and press right mouse button Import.... From General choose Archive File. For full instructions see below video.

Creating a new project (How To video)

You downloaded and installed EulumdatTools and now you want to know what to do next.

Create a new project

To use EulumdatTools to convert or validate photometric files you should first create a new EulumdatTools project. This video explains how.

New version of EulumdatTools 0.9.17.v20130325 released

A new version of EulumdatTools 0.9.17.v20130325 was published on March 25 at http://www.fold1.com/eulumdattools/. Improvements and bug fixes for 0.9.14.v20130204 are as follows:

• Improved code quality metrics.
• Add check for zero lamp lumens in IES reader code.
• The version number was updated to 0.9.14.

Improvements and bug fixes for 0.9.15.v20130209 are as follows:

• Improved handling of Eulumdat files with absolute photometry.
• Make it easier to find place to enter license code once registered.
• The version number was updated to 0.9.15.

Improvements and bug fixes for 0.9.16.v20130222 are as follows:

• Made sequence of properties in Project Explorer and Product Properties view the same.
• Automated build.
• First version of optional IES validator (install separately).
• Improved stability on very large file sets (5000+ files).
• The version number was updated to 0.9.16.

Improvements and bug fixes for 0.9.17.v20130325 are as follows:

• Make C angles for C-Gamma page in editor display angles from 90° - 270° instead of 270° - 0°.
• Add consistency check for gamma 0 for all C-planes (nadir).
• Improved stability even more on very large file sets (5000+ files).
• Fixed problem with updating for new releases.
• Improved version of optional IES validator (install separately).
• The version number was updated to 0.9.17.

Registered users should not upgrade using Check for upgrades but download a complete new version and register that using their existing license keys. The problem with updating was fixed, so this should be the last time. New users can download an apply for 30 day free evaluation license at the installation site

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 and perform update after installation.:

• Windows 32 bit OR Windows 64 bit
• Mac OSX Cocoa 32 bit OR Mac OSX Cocoa 64 bit
• Linux GTK 32 bit OR Linux GTK 64 bit

Inconsistent gamma values in EULUMDAT (and IES) files.

When we look at the definition of a C-gamma distribution, we can conclude that gamma angle 0° for each C-plane points in the same direction: straight down. Similarly the gamma angle 180° points straight up, for every C-plane. Consequently it should be considered an ERROR in the file when the luminous intensity values for these coincident angles in either cd/klm, candelas, or footcandles are different! Yet there are many files that have this error! What would be the value you use to calculate glare in that direction, or the illuminance? I think these problems result from the measurement protocols, where the anomalies of temperature variation or impact of orientation during measurement is not properly post-processed. In the next release of EulumdatTools these errors are caught, so that they can be manually corrected.

New version of EulumdatTools 0.9.13.v20130125 released

A new version of EulumdatTools 0.9.13.v20130125 was published on December 21 at http://www.fold1.com/eulumdattools/. Improvements and bug fixes are as follows:

• Runtime environment is based on Eclipse 3.8.1. Getting ready for 4.x upgrade!
• Memory usage reduced.
• Improved license code checks to increase sales.
• Broken Ant task into separate plugin (for Eclipse IDE only)
• The version number was updated to 0.9.13.

Registered users should not upgrade using check for upgrades but download a complete new version and register that using their existing license keys. New users can downlaod an apply for 30 day free evaluation license at the installation site

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 and perform update after installation.:

• Windows 32 bit OR Windows 64 bit
• Mac OSX Cocoa 32 bit OR Mac OSX Cocoa 64 bit
• Linux GTK 32 bit OR Linux GTK 64 bit