Dear Radiance experts,
I'm new to Radiance and appreciate if you can help me on this simple
question:
Welcome and I guess we can.
The following commend in the Shell of Unix will get the horizontal
irradiance value due to the uniform sky as defined in the sky_uni.oct file:
First of all: In your command below you need to substitute the "-r+"
with a "-I+" (upper case i). If you copied this command correctly from
your source then you need a better source of information.
% echo "0 0 0 0 0 1" | rtrace -h -r+ -w -ab 1 sky_uni.oct
May I ask in order to do the same thing what DOS commands I should use do
the same thing in the command window of a Windows XP or Vista system when
I'm using the Desktop Radiance?
You can create a file "points.txt" with "0 0 0 0 0 1" in it (ASCII
text file, not a Word doc!). These are basically the coordinates of
the point you want to test (0,0,0) and the direction in which you
point your virtual sensor (0,0,1 = "up"). Now use this command on the
DOS prompt:
rtrace -w -h -ab 1 sky_uni.oct < points.txt
Later on you will want to test more than just one point. Then you can
just add a new line for each point to the file and you will get one
line of output (r,g and b value) for each line/point.
PS: If you can install applications on your system then you should
replace the Radiance installation from Desktop Radiance with a more
recent version. You can download a Windows installer for the 3.9
version here:
http://www.bozzograo.net/radiance/index.php?module=Downloads&func=prep_hand_out&lid=23
Regards,
Thomas
···
On Fri, May 28, 2010 at 10:48 AM, Ji Zhang 张冀 <[email protected]> wrote:
Dear Thomas,
Thank you very much for your kind help!
Ji
···
On Fri, May 28, 2010 at 8:55 PM, Thomas Bleicher <[email protected]>wrote:
On Fri, May 28, 2010 at 10:48 AM, Ji Zhang 张冀 <[email protected]> wrote:
> Dear Radiance experts,
>
> I'm new to Radiance and appreciate if you can help me on this simple
> question:
Welcome and I guess we can.
> The following commend in the Shell of Unix will get the horizontal
> irradiance value due to the uniform sky as defined in the sky_uni.oct
file:
First of all: In your command below you need to substitute the "-r+"
with a "-I+" (upper case i). If you copied this command correctly from
your source then you need a better source of information.
> % echo "0 0 0 0 0 1" | rtrace -h -r+ -w -ab 1 sky_uni.oct
> May I ask in order to do the same thing what DOS commands I should use do
> the same thing in the command window of a Windows XP or Vista system when
> I'm using the Desktop Radiance?
You can create a file "points.txt" with "0 0 0 0 0 1" in it (ASCII
text file, not a Word doc!). These are basically the coordinates of
the point you want to test (0,0,0) and the direction in which you
point your virtual sensor (0,0,1 = "up"). Now use this command on the
DOS prompt:
rtrace -w -h -ab 1 sky_uni.oct < points.txt
Later on you will want to test more than just one point. Then you can
just add a new line for each point to the file and you will get one
line of output (r,g and b value) for each line/point.
PS: If you can install applications on your system then you should
replace the Radiance installation from Desktop Radiance with a more
recent version. You can download a Windows installer for the 3.9
version here:
http://www.bozzograo.net/radiance/index.php?module=Downloads&func=prep_hand_out&lid=23
Regards,
Thomas
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--
ZHANG Ji 张冀 (PhD) :: Research Fellow :: Centre for Sustainable Asian Cities
:: School of Design and Environment :: National University of Singapore :: 4
Architecture Drive, Singapore, 117566 :: Contact: 65-6516 5046 :: Email:
[email protected]