HELP

Hi all...

Im trying to do daylight calculations and im in the starting stage of doing
this... im using ecotect for my modelling and to get daylight results im
using radiance export options...

I need help in

- What al factors to be considered while exporting to radiance....

- What all parameters to be checked..lik materials sky conditions
etc in ecotect

- The camera...hoe to set it accuarately

- The best way to get ouput in radiance.

- And how to map down the results from radiance images so tht i amy
use for comparison and calculations for various cases..

Its urgent pls help...

Any link to document where basics of ecotect to radiance is xplained step by
step wud also be helpful...thank youuuuuuuu

thanks

Hi,

Here's a helpful tutorial for using Ecotect in conjunction with DAYSIM/Radiance:
http://www.gsd.harvard.edu/research/gsdsquare/Publications/GettingStartedwithEcotectRadianceDaysim.pdf

Here's another tutorial, but it is geared specifically towards DAYSIM:
http://www.nrc-cnrc.gc.ca/obj/irc/doc/daysim-tutorial.pdf

The Ecotect square 1 website used to have quite a bit of useful
information, including how to position a camera but am not sure where
and if this information was moved after the merger with Autodesk. I
think it may have been moved here: http://wiki.naturalfrequency.com/

Krystyna

···

On Wed, Apr 13, 2011 at 10:36 AM, dharam <[email protected]> wrote:

Hi all...

Im trying to do daylight calculations and im in the starting stage of doing
this... im using ecotect for my modelling and to get daylight results im
using radiance export options...

I need help in

- What al factors to be considered while exporting to radiance....

- What all parameters to be checked..lik materials sky conditions
etc in ecotect

- The camera...hoe to set it accuarately

- The best way to get ouput in radiance.

- And how to map down the results from radiance images so tht i amy
use for comparison and calculations for various cases..

Its urgent pls help...

Any link to document where basics of ecotect to radiance is xplained step by
step wud also be helpful...thank youuuuuuuu

thanks

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Hi all...

Im trying to do daylight calculations and im in the starting stage of doing
this... im using ecotect for my modelling and to get daylight results im
using radiance export options...

I need help in

- What al factors to be considered while exporting to
radiance....

Usually Ecotect models are in mm. It's better to convert the units to meters
during the export. There is a conversion factor that should be set to
"0.001".

- What all parameters to be checked..lik materials sky conditions
etc in ecotect

The only relevant material information is the reflectance value. To simplify
your life you can use only grey colours where the r,g,b values are identical
to the reflectance.

For a sky you probably want to chose a "CIE overcast sky". However, that
depends on your evaluations. Again, we need to know what you want to do.

- The camera...hoe to set it accuarately

Just add a camera object. It can be exported as a view specification in
Radiance. Once it is exported you can modify the specification in the
scene.rif file.

- The best way to get ouput in radiance.

What do you want? Images or grid data? When you set up a grid it will be
exported to a "*.pts" file which can be used in Radiance. Ecotect will also
produce a "*.bat" file with the required Radiance commands.

- And how to map down the results from radiance images so tht i
amy use for comparison and calculations for various cases..

If you want illuminance images you have to set the right option during the
export. After that you can use falsecolor.exe or wxfalsecolor (
http://pyrat.googlecode.com/files/wxfalsecolor.exe) to convert the images to
falsecolor images for comparison.

Its urgent pls help...

Oh man! Your screwed ...

Any link to document where basics of ecotect to radiance is xplained step
by step wud also be helpful...

Start here:

http://wiki.naturalfrequency.com/wiki/Radiance_Daylighting_Tutorial

I think, most of the steps to export to Radiance are explained there. You
still need to have the model "built" correctly, though.

Regards,
Thomas

···

On Wed, Apr 13, 2011 at 12:36 PM, dharam <[email protected]> wrote: