Dear list,
I was trying gendaymtx and the new dctimestep (it works excelent, thanks to
the developers), and noticed the following.
I modeled a big cube, and set sensors pointing north, south, east and west
(the idea is that the cubes shades). Then, I made a DC matrix, created the
sky matrix; and dctimesteped all together (the weather used is Montreal),
and got THESE <https://sites.google.com/site/sunliteproject/comments>
results.
The sensors were defined (North, South, East and West, respectively)
0 3.1 1 0 1 0
0 -3.1 1 0 -1 0
3.1 0 1 1 0 0
-3.1 0 1 -1 0 0
Anyway; North and South seem to be ok to me (simetric along the day, and
the south has more "sun" than north). But West and East seem to be
inverted...? and the east is more insolated in the afternoon? (I havent
really looked at the numbers themselves, but just to the tendency). *Can
there be a bug in the program??*
On the other hand... is there any plan on adding the -O option to
gendaymtx, to get the solar intensities?
THANKS TO EVERYONE IN ADVANCE
German
Dear list,
My bad, the convention is as I thought; and everything seem to work
correctly.
Still wondering about the -O option though.
THANKS ANYWAY TO ALL
German
···
2013/3/11 Germán Molina Larrain <gmolina1@uc.cl>
I heard that the link didn't contain the picture, so please try THESE ONE<https://df877ad7-a-62cb3a1a-s-sites.googlegroups.com/site/sunliteproject/comments/Captura%20de%20pantalla%202013-03-11%20a%20la(s)%2016.16.50.png?attachauth=ANoY7co5cT3MUan0PSt8V1eXcQFsQP07XGvfJTzgjR7-MHqlTTWcSbXshg7Q5EKnGMP0mBbaR16kG1xFkhx28qh8W95qwjlPh4WR8lh-C0u9AJMs4H-Ue8vYlhaUtznf5lWSpO1cNNhpsVnUkinVJh3mRSKFKCl67qiqi3ERF2Oplxb7_XRvBJQtkgmLEFAi4V89T2uTpHgesZbLGC0Y65L2XwdPxALmBC7lttmMM0xm7vONNM_0r8h84jI6JcrdIKW0r42XgdamQPHOwSP2QYuhkzoxhvDICA%3D%3D&attredirects=0>,
and let me know if it does not work, to figure out something.
THANKS
German
2013/3/11 Germán Molina Larrain <germolinal@gmail.com>
Dear list,
I was trying gendaymtx and the new dctimestep (it works excelent, thanks
to the developers), and noticed the following.
I modeled a big cube, and set sensors pointing north, south, east and
west (the idea is that the cubes shades). Then, I made a DC matrix, created
the sky matrix; and dctimesteped all together (the weather used is
Montreal), and got THESE<https://sites.google.com/site/sunliteproject/comments>results.
The sensors were defined (North, South, East and West, respectively)
0 3.1 1 0 1 0
0 -3.1 1 0 -1 0
3.1 0 1 1 0 0
-3.1 0 1 -1 0 0
Anyway; North and South seem to be ok to me (simetric along the day, and
the south has more "sun" than north). But West and East seem to be
inverted...? and the east is more insolated in the afternoon? (I havent
really looked at the numbers themselves, but just to the tendency). *Can
there be a bug in the program??*
On the other hand... is there any plan on adding the -O option to
gendaymtx, to get the solar intensities?
THANKS TO EVERYONE IN ADVANCE
German
Hi Germán,
I am not quite sure how the new gendaylit -O option, which changes the incorporated spectrum, is supposed to interact with RGB colors in a Radiance scene. You would have to redefine your materials to incorporate a different set of wavelengths and define what those are to really be consistent about it. Doing everything in single-channel mode introduces another type of inaccuracy, one that is potentially greater than the difference between total flux and visible flux. You really have to know what you're doing.
-Greg
···
From: Germán Molina Larrain <gmolina1@uc.cl>
Date: March 11, 2013 7:45:14 PM PDT
Dear list,
My bad, the convention is as I thought; and everything seem to work correctly.
Still wondering about the -O option though.
THANKS ANYWAY TO ALL
German
2013/3/11 Germán Molina Larrain <gmolina1@uc.cl>
I heard that the link didn't contain the picture, so please try THESE ONE, and let me know if it does not work, to figure out something.
THANKS
German
2013/3/11 Germán Molina Larrain <germolinal@gmail.com>
Dear list,
I was trying gendaymtx and the new dctimestep (it works excelent, thanks to the developers), and noticed the following.
I modeled a big cube, and set sensors pointing north, south, east and west (the idea is that the cubes shades). Then, I made a DC matrix, created the sky matrix; and dctimesteped all together (the weather used is Montreal), and got THESE results.
The sensors were defined (North, South, East and West, respectively)
0 3.1 1 0 1 0
0 -3.1 1 0 -1 0
3.1 0 1 1 0 0
-3.1 0 1 -1 0 0
Anyway; North and South seem to be ok to me (simetric along the day, and the south has more "sun" than north). But West and East seem to be inverted...? and the east is more insolated in the afternoon? (I havent really looked at the numbers themselves, but just to the tendency). Can there be a bug in the program??
On the other hand... is there any plan on adding the -O option to gendaymtx, to get the solar intensities?
THANKS TO EVERYONE IN ADVANCE
German
_______________________________________________
Radiance-general mailing list
Radiance-general@radiance-online.org
http://www.radiance-online.org/mailman/listinfo/radiance-general
Dear Greg,
I think I will elaborate what I am trying to do first using the "gendaylit
genskyvec", and see if it works, then I may ask these kind of things.
My idea was, indeed, to emulate a single-channel mode, as I did when I used
genBSDF for solar transmission. Of course, the materials wil have to be
adapted: I was planning to use spectrally averaged solar properties (grey
world), and I have no intention of obtaining lighting information out of
these calculatons.
As you might guess, I am not quite sure I know what I am doing, haha, but
my understanding is that it should work, right? My idea is to validate all
these, though.
THANKS
German
···
2013/3/11 Greg Ward <gregoryjward@gmail.com>
Hi Germán,
I am not quite sure how the new gendaylit -O option, which changes the
incorporated spectrum, is supposed to interact with RGB colors in a
Radiance scene. You would have to redefine your materials to incorporate a
different set of wavelengths and define what those are to really be
consistent about it. Doing everything in single-channel mode introduces
another type of inaccuracy, one that is potentially greater than the
difference between total flux and visible flux. You really have to know
what you're doing.
-Greg
*From: *Germán Molina Larrain <gmolina1@uc.cl>
*Date: *March 11, 2013 7:45:14 PM PDT
*
*
Dear list,
My bad, the convention is as I thought; and everything seem to work
correctly.
Still wondering about the -O option though.
THANKS ANYWAY TO ALL
German
2013/3/11 Germán Molina Larrain <gmolina1@uc.cl>
I heard that the link didn't contain the picture, so please try THESE ONE<https://df877ad7-a-62cb3a1a-s-sites.googlegroups.com/site/sunliteproject/comments/Captura%20de%20pantalla%202013-03-11%20a%20la(s)%2016.16.50.png?attachauth=ANoY7co5cT3MUan0PSt8V1eXcQFsQP07XGvfJTzgjR7-MHqlTTWcSbXshg7Q5EKnGMP0mBbaR16kG1xFkhx28qh8W95qwjlPh4WR8lh-C0u9AJMs4H-Ue8vYlhaUtznf5lWSpO1cNNhpsVnUkinVJh3mRSKFKCl67qiqi3ERF2Oplxb7_XRvBJQtkgmLEFAi4V89T2uTpHgesZbLGC0Y65L2XwdPxALmBC7lttmMM0xm7vONNM_0r8h84jI6JcrdIKW0r42XgdamQPHOwSP2QYuhkzoxhvDICA%3D%3D&attredirects=0>,
and let me know if it does not work, to figure out something.
THANKS
German
2013/3/11 Germán Molina Larrain <germolinal@gmail.com>
Dear list,
I was trying gendaymtx and the new dctimestep (it works excelent,
thanks to the developers), and noticed the following.
I modeled a big cube, and set sensors pointing north, south, east and
west (the idea is that the cubes shades). Then, I made a DC matrix, created
the sky matrix; and dctimesteped all together (the weather used is
Montreal), and got THESE<https://sites.google.com/site/sunliteproject/comments>results.
The sensors were defined (North, South, East and West, respectively)
0 3.1 1 0 1 0
0 -3.1 1 0 -1 0
3.1 0 1 1 0 0
-3.1 0 1 -1 0 0
Anyway; North and South seem to be ok to me (simetric along the day,
and the south has more "sun" than north). But West and East seem to be
inverted...? and the east is more insolated in the afternoon? (I havent
really looked at the numbers themselves, but just to the tendency). *Can
there be a bug in the program??*
On the other hand... is there any plan on adding the -O option to
gendaymtx, to get the solar intensities?
THANKS TO EVERYONE IN ADVANCE
German
_______________________________________________
Radiance-general mailing list
Radiance-general@radiance-online.org
http://www.radiance-online.org/mailman/listinfo/radiance-general
_______________________________________________
Radiance-general mailing list
Radiance-general@radiance-online.org
http://www.radiance-online.org/mailman/listinfo/radiance-general
