Ecotect Export Lighting Fixture Color

radiance-general
1

Hello Thomas,

Thanks for the reply. The funny thing, I am not defining the lights in
Ecotect myself, I am using the default materials. In all cases, those 3
values are 0 (actually sometimes 0.001). And I see no way of modifying
those values even though I have played with all the material properties.

Ömer Moltay, LEED AP

When I export this model to radiance, I get the following error:

3020: WARNING: Light object 87 is producing no light - check color and
lumen output.

So and how is your "FloodlightNoShielding" defined in Ecotect?

Indeed, when I look into the RAD file, I see the following:

FloodlightNoShielding_dist light FloodlightNoShielding
0
0
3 ? ? ? 0.000 0.000 0.000

When I render it this way, there is no artifical lighting. When I convert
the "0.000" values to "255", then I get the desired result.

You don't want to use the display RGB values here (range 1-255). The
three values define the intensity of the light source in W/m^2. The
right value for your _flood_light depends on the definition of the
distribution and the size of the fitting in the model.

Now, the
problem is, there are so many fixtures in the model that I cannot edit the
RAD file each time before simulation. Why is Ecotect creating the RAD file
with these values? Is there a bug or is there something that I am missing?

Bug is always possible with Ecotect but I expect that - as the error
suggests - you definition of the light (a type of material in Ecotect)
is wrong.

Regards,
Thomas

2

Depending on the version of Ecotect (5.5 works, 5.6 doesn't) you can
try and place a file in your material repository folder. Ecotect can
then look for each material for a file with the same name in this
folder and will use the contents of the file instead of converting the
material properties - which is does pretty badly anyway.

So find your material repository, create a file called
"FloodlightNoShielding.rad" and add a working light description to
this file. Then export again with the right option - I forgot the name
but it's pretty obvious.

If that works and changes your light definition in Radiance we can
then talk about what should go into this file. If it doesn't work you
can also export the lights as markers and replace the markers with the
proper Radiance description after the export.

Regards,
Thomas

···

2010/9/8 <[email protected]>:

Hello Thomas,

Thanks for the reply. The funny thing, I am not defining the lights in
Ecotect myself, I am using the default materials. In all cases, those 3
values are 0 (actually sometimes 0.001). And I see no way of modifying
those values even though I have played with all the material properties.

Ömer Moltay, LEED AP