vertical illuminance using Radiance

Hana_Al-Jawder · January 19, 2014, 11:41pm

Hi all,

Does anyone know of a way to get vertical illuminance at a specific point in Radiance?

Thanks,

Hana

Vaib · January 20, 2014, 4:02am

Hi,

You can give the direction vector in rtrace command to get irradiance
value. Check rtrace manual.
For example: If you assign input arguments "xorg yorg zorg xdir ydir zdir"
as "xorg yorg zorg 0 0 1" then you will get irradiance at the horizontal
plane (or floor of the building). Similarly, you can do for other vertical
planes by assigning their correct location and direction. To convert
irradiance to illuminance, see this command:

$ echo xorg yorg zorg xdir ydir zdir | rtrace -I [options] yourScene.oct |
rcalc -e ’$1=$2;$2=179*(.265*$4+.670*$5+.065*$6)’

Regards,
Vaib

···

On 20 January 2014 00:41, Hana Al-Jawder <[email protected]>wrote:

Hi all,

Does anyone know of a way to get vertical illuminance at a specific point
in Radiance?

Thanks,

Hana

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Radiance-general mailing list
[email protected]
http://www.radiance-online.org/mailman/listinfo/radiance-general

Hugo_Testolini · January 23, 2014, 11:18pm

Is it possible to calculate cumulative daily lux by month with radiance?

···

On 19 January 2014 22:02, Vaib <[email protected]> wrote:

Hi,

You can give the direction vector in rtrace command to get irradiance
value. Check rtrace manual.
For example: If you assign input arguments "xorg yorg zorg xdir ydir zdir"
as "xorg yorg zorg 0 0 1" then you will get irradiance at the horizontal
plane (or floor of the building). Similarly, you can do for other vertical
planes by assigning their correct location and direction. To convert
irradiance to illuminance, see this command:

$ echo xorg yorg zorg xdir ydir zdir | rtrace -I [options] yourScene.oct |
rcalc -e ’$1=$2;$2=179*(.265*$4+.670*$5+.065*$6)’

Regards,
Vaib

On 20 January 2014 00:41, Hana Al-Jawder <[email protected]>wrote:

Hi all,

Does anyone know of a way to get vertical illuminance at a specific point
in Radiance?

Thanks,

Hana

_______________________________________________
Radiance-general mailing list
[email protected]
http://www.radiance-online.org/mailman/listinfo/radiance-general

_______________________________________________
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[email protected]
http://www.radiance-online.org/mailman/listinfo/radiance-general

--
*Ugo Testolini*
a r q u i t e c t o

Greg_Ward · January 24, 2014, 7:35pm

Yes.

If you want more details, you'll have to ask a more detailed question, describing your input (do you have a weather tape?) and how you want to average or accumulate your data (any operable systems in play?), etc.

-Greg

···

From: Hugo Testolini <[email protected]>
Date: January 23, 2014 3:18:03 PM PST

Is it possible to calculate cumulative daily lux by month with radiance?

On 19 January 2014 22:02, Vaib <[email protected]> wrote:
Hi,

You can give the direction vector in rtrace command to get irradiance value. Check rtrace manual.
For example: If you assign input arguments "xorg yorg zorg xdir ydir zdir" as "xorg yorg zorg 0 0 1" then you will get irradiance at the horizontal plane (or floor of the building). Similarly, you can do for other vertical planes by assigning their correct location and direction. To convert irradiance to illuminance, see this command:

$ echo xorg yorg zorg xdir ydir zdir | rtrace -I [options] yourScene.oct | rcalc -e ’$1=$2;$2=179*(.265*$4+.670*$5+.065*$6)’

Regards,
Vaib

On 20 January 2014 00:41, Hana Al-Jawder <[email protected]> wrote:
Hi all,

Does anyone know of a way to get vertical illuminance at a specific point in Radiance?

Thanks,

Hana

Hana_Al-Jawder · February 18, 2014, 7:03am

Hi Greg, Vaib and all,

About my question, I asked earlier, here are more details about the problem.

I am doing daylight analysis for a room using Radiance with output showed in Ecotect, I have the drawing with all required details ( the latitude, longitude, weather data, time, date and surface materials and colour) I already did calculate all the illuminance points at 0.8m on the grid created in Ecotect and got the result I need. Know I need to calculate the vertical illuminance for similar point I have in the grid that just facing the window opening as I need these readings to calculate the glare index for room I am studying it.

The problem that I am no that expert in using radiance, so is there any simple tips can help me in solve this problem?

I do appreciate your help in this matter

Many thanks and best regards,

Hana

Vaib · February 18, 2014, 12:23pm

Hi Hana,

If I understood your question correctly, you need to calculate illuminance
on a vertical grid in Ecotect. I guess you have already calculated
illuminance on a horizontal grid at 0.8m height above ground (working
plane). If this is correct, then please see the image attached.

I also started with Ecotect, but I am not sure it has its own user group.
But in this group too, there will be people who are experts in Ecotect.
Hope it helps.

Regards,
Vaib

···

On 18 February 2014 08:03, Hana Al-Jawder <[email protected]>wrote:

Hi Greg, Vaib and all,

About my question, I asked earlier, here are more details about the
problem.

I am doing daylight analysis for a room using Radiance with output showed
in Ecotect, I have the drawing with all required details ( the latitude, longitude,
weather data, time, date and surface materials and colour) I already
did calculate all the illuminance points at 0.8m on the grid created in Ecotect
and got the result I need. Know I need to calculate the vertical illuminance
for similar point I have in the grid that just facing the window opening
as I need these readings to calculate the glare index for room I am studying
it.

The problem that I am no that expert in using radiance, so is there any
simple tips can help me in solve this problem?

I do appreciate your help in this matter

Many thanks and best regards,

Hana

_______________________________________________
Radiance-general mailing list
[email protected]
http://www.radiance-online.org/mailman/listinfo/radiance-general

Hana_Al-Jawder · February 20, 2014, 7:38am

Hi Vaib,

Thank you so much for your response.
Yes, I need to calculate the vertical illuminance on 0.8m facing the opening side.
I did not find the attached image you talked about can you resend it please.
Best regards,
Hana

···

__

Message: 2
Date: Tue, 18 Feb 2014 07:03:03 +0000
From: Hana Al-Jawder <[email protected]>
To: "[email protected]"
<[email protected]>
Subject: [Radiance-general] vertical illuminance using Radiance
Message-ID: <B7E6424E7BA25A49855CFB6E30349C2F61E8D225@ex-mbx-pro-02>
Content-Type: text/plain; charset="iso-8859-1"

Hi Greg, Vaib and all,

About my question, I asked earlier, here are more details about the problem.

I am doing daylight analysis for a room using Radiance with output showed in Ecotect, I have the drawing with all required details ( the latitude, longitude, weather data, time, date and surface materials and colour) I already did calculate all the illuminance points at 0.8m on the grid created in Ecotect and got the result I need. Know I need to calculate the vertical illuminance for similar point I have in the grid that just facing the window opening as I need these readings to calculate the glare index for room I am studying it.

The problem that I am no that expert in using radiance, so is there any simple tips can help me in solve this problem?

I do appreciate your help in this matter

Many thanks and best regards,

Hana

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Message: 3
Date: Tue, 18 Feb 2014 13:23:06 +0100
From: Vaib <[email protected]>
To: Radiance general discussion <[email protected]>
Subject: Re: [Radiance-general] vertical illuminance using Radiance
Message-ID:
<CAD7gt0U0qXM8Mtg_t2ehe1YGg8q4kengN9cXGyDs9Onac4pSww@mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"

Hi Hana,

If I understood your question correctly, you need to calculate illuminance
on a vertical grid in Ecotect. I guess you have already calculated
illuminance on a horizontal grid at 0.8m height above ground (working
plane). If this is correct, then please see the image attached.

I also started with Ecotect, but I am not sure it has its own user group.
But in this group too, there will be people who are experts in Ecotect.
Hope it helps.

Regards,
Vaib

_______________________________________________
Radiance-general mailing list
[email protected]
http://www.radiance-online.org/mailman/listinfo/radiance-general

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Vaib · February 20, 2014, 3:49pm

Hi Hana,

Okay, since the question was asked on this group I will send the image in
line with text this time, and also to you personally on your email.

Vaib

···

On 20 February 2014 08:38, Hana Al-Jawder <[email protected]>wrote:

Hi Vaib,

Thank you so much for your response.
Yes, I need to calculate the vertical illuminance on 0.8m facing the
opening side.
I did not find the attached image you talked about can you resend it
please.
Best regards,
Hana

__

Message: 2
Date: Tue, 18 Feb 2014 07:03:03 +0000
From: Hana Al-Jawder <[email protected]>
To: "[email protected]"
<[email protected]>
Subject: [Radiance-general] vertical illuminance using Radiance
Message-ID: <B7E6424E7BA25A49855CFB6E30349C2F61E8D225@ex-mbx-pro-02>
Content-Type: text/plain; charset="iso-8859-1"

Hi Greg, Vaib and all,

About my question, I asked earlier, here are more details about the
problem.

I am doing daylight analysis for a room using Radiance with output showed
in Ecotect, I have the drawing with all required details ( the latitude,
longitude, weather data, time, date and surface materials and colour) I
already did calculate all the illuminance points at 0.8m on the grid
created in Ecotect and got the result I need. Know I need to calculate the
vertical illuminance for similar point I have in the grid that just facing
the window opening as I need these readings to calculate the glare index
for room I am studying it.

The problem that I am no that expert in using radiance, so is there any
simple tips can help me in solve this problem?

I do appreciate your help in this matter

Many thanks and best regards,

Hana

-------------- next part --------------
An HTML attachment was scrubbed...
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http://www.radiance-online.org/pipermail/radiance-general/attachments/20140218/a5d2b337/attachment-0001.html
>

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Message: 3
Date: Tue, 18 Feb 2014 13:23:06 +0100
From: Vaib <[email protected]>
To: Radiance general discussion <[email protected]>
Subject: Re: [Radiance-general] vertical illuminance using Radiance
Message-ID:
<
CAD7gt0U0qXM8Mtg_t2ehe1YGg8q4kengN9cXGyDs9Onac4pSww@mail.gmail.com>
Content-Type: text/plain; charset="iso-8859-1"

Hi Hana,

If I understood your question correctly, you need to calculate illuminance
on a vertical grid in Ecotect. I guess you have already calculated
illuminance on a horizontal grid at 0.8m height above ground (working
plane). If this is correct, then please see the image attached.

I also started with Ecotect, but I am not sure it has its own user group.
But in this group too, there will be people who are experts in Ecotect.
Hope it helps.

Regards,
Vaib

>
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> Radiance-general mailing list
> [email protected]
> http://www.radiance-online.org/mailman/listinfo/radiance-general
>
>
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