Changing north direction in Daysim

radiance-daysim
1

Hi all,

Is there a way to set up an angle for north without rotating the model in
Daysim?

I assume there should be a keyword in the header file that I don't know of?
Or can I just play with time_zone and will the see the same effect?

Thanks,
Mostapha

2

Hi Mostapha,

There is a header keyword called, "scene_rotation_angle" which goes into the header file like so:

scene_rotation_angle 90

You have to run the Daysim subprogram rotate_scene to make this work, which is essentially having Daysim run a rotation transformation for you. I'm not sure if that was what you meant by rotating the model in Daysim.

Best,
Alstan

···

On Thu, 23 Oct 2014 00:02:29 +0800, Mostapha Sadeghipour <[email protected]> wrote:

Hi all,

Is there a way to set up an angle for north without rotating the model in Daysim?

I assume there should be a keyword in the header file that I don't know of? Or can I just play with time_zone and will the see the same effect?

Thanks,
Mostapha

3

Hi Alstan,

This is exactly what I needed, and also I assume the rotation will be
anti-clockwise?

For some reason both the keyword and the subprogram are missing from the
Daysim page. Would be great if someone add them to the page as they are
both really useful.

Best,
Mostapha

···

On Wed, Oct 22, 2014 at 7:48 PM, J. Alstan Jakubiec <[email protected]> wrote:

Hi Mostapha,

There is a header keyword called, "scene_rotation_angle" which goes into
the header file like so:

*scene_rotation_angle 90*

You have to run the Daysim subprogram rotate_scene to make this work,
which is essentially having Daysim run a rotation transformation for you.
I'm not sure if that was what you meant by rotating the model in Daysim.

Best,
Alstan

On Thu, 23 Oct 2014 00:02:29 +0800, Mostapha Sadeghipour < > [email protected]> wrote:

Hi all,

Is there a way to set up an angle for north without rotating the model in
Daysim?

I assume there should be a keyword in the header file that I don't know
of? Or can I just play with time_zone and will the see the same effect?

Thanks,
Mostapha

4

Hello Alstan,
         
      I need to apply the same command. There is some weird correspondance btw the Ecotect and the Daysim values, and I assume from reading the forums, that it is because of the North orientation.
      Could you, please, assist me with how to
run the Daysim subprogram rotate_scene to make this work?
        Regards, Niya
    
var m3_u = (location.protocol==‘https:’?‘https://a.abv.bg/www/delivery/ajs.php’:'http://a.abv.bg/www/delivery/ajs.php’); var m3_r = Math.floor(Math.random()*99999999999); if (!document.MAX_used) document.MAX_used = ‘,’; document.write (" ");

5

Hi Niya,

I also worked with Daysim and Ecotect. I did not use the auto generated
grid in Ecotect, but made a sensorpoint file myself, so I do not know if it
is the same with the Ecotect grid. However, when I tried to rotate the
building in Daysim, the sensorpoints did not rotate with the model. I had
to make a new sensorpoint file to match the rotated building.

Cheers,
Amalie

···

2014-11-11 18:57 GMT+01:00 Todor Syarov <[email protected]>:

*Hello Alstan, *

*I need to apply the same command. There is some weird correspondance btw
the Ecotect and the Daysim values, and I assume from reading the forums,
that it is because of the North orientation.*

*Could you, please, assist me with how to run the Daysim subprogram
rotate_scene to make this work?*

*Regards,*
*Niya*

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

6

Hello Amalie,
  After I edit the.hea file and rotate the scene I get created a new filename.pts.rotate.pts file. I assume it is with the rotated points - i am trying to find a way to verify this still.
  I would be interested to know how do you create the rotated sensorpoint file?
  
  Best, Niya

-------- Оригинално писмо --------

От: Amalie Momme [email protected]

Относно: Re: [Radiance-daysim] Changing north direction in Daysim

До: DAYSIM discussion

Изпратено на: Сряда, 2014, Ноември 12 14:08:52 EET

    Hi Niya,
    
    I also worked with Daysim and Ecotect. I did not use the auto generated grid in Ecotect, but made a sensorpoint file myself, so I do not know if it is the same with the Ecotect grid. However, when I tried to rotate the building in Daysim, the sensorpoints did not rotate with the model. I had to make a new sensorpoint file to match the rotated building.
    
    Cheers,
    
    Amalie

···

2014-11-11 18:57 GMT+01:00 Todor Syarov
      [email protected] > :
    
          Hello Alstan,
        
          I need to apply the same command. There is some weird correspondance btw the Ecotect and the Daysim values, and I assume from reading the forums, that it is because of the North orientation.
        
          Could you, please, assist me with how to
run the Daysim subprogram rotate_scene to make this work?
        
           Regards,
        
           Niya
         
_______________________________________________
     
Radiance-daysim mailing list
     
      [email protected]
     
      http://www.radiance-online.org/mailman/listinfo/radiance-daysim
     
var m3_u = (location.protocol==‘https:’?‘https://a.abv.bg/www/delivery/ajs.php’:'http://a.abv.bg/www/delivery/ajs.php’); var m3_r = Math.floor(Math.random()*99999999999); if (!document.MAX_used) document.MAX_used = ‘,’; document.write (" ");

7

Hello Niya,

I got the rotated pts file as well, however this was not correct - but this
was the pts file I made myself. If you download the program Notepad++ (It's
just an advanced Notepad which can handle different types of text files),
you can see your pts file.

A pts file contains nothing but the coordinates of your sensor points and
then a direction vector, (0 0 1) pointing up.

Example:
2.000 3.000 0.850 0.000 0.000 1.000
3.000 3.000 0.850 0.000 0.000 1.000

this is two sensor points placed at the coordinates (x,y,z) = (2,3,0.85),
and they're both pointing straight up.

With notepad++ you can create this, and when saving the file, type the name
and add '.pts'. Voila, you have a pts file :slight_smile: Of course, then you have to
know the coordinate system in DAYSIM, and I believe that north is always
the same as positive y-axis.

But if you do create your own sensorpoint file, you cannot see the results
in Ecotect as I believe you can with the auto generated pts file.

Good luck with it!

Amalie

···

2014-11-12 13:13 GMT+01:00 Todor Syarov <[email protected]>:

Hello Amalie,

After I edit the.hea file and rotate the scene I get created a new
filename.pts.rotate.pts file. I assume it is with the rotated points - i am
trying to find a way to verify this still.

I would be interested to know how do you create the rotated sensorpoint
file?

Best,
Niya

-------- Оригинално писмо --------
От: Amalie Momme [email protected]
Относно: Re: [Radiance-daysim] Changing north direction in Daysim
До: DAYSIM discussion <[email protected]>
Изпратено на: Сряда, 2014, Ноември 12 14:08:52 EET

Hi Niya,

I also worked with Daysim and Ecotect. I did not use the auto generated
grid in Ecotect, but made a sensorpoint file myself, so I do not know if it
is the same with the Ecotect grid. However, when I tried to rotate the
building in Daysim, the sensorpoints did not rotate with the model. I had
to make a new sensorpoint file to match the rotated building.

Cheers,
Amalie

2014-11-11 18:57 GMT+01:00 Todor Syarov <[email protected]>:

*Hello Alstan, *

  *I need to apply the same command. There is some weird correspondance
btw the Ecotect and the Daysim values, and I assume from reading the
forums, that it is because of the North orientation.*

  *Could you, please, assist me with how to run the Daysim subprogram
rotate_scene to make this work?*

  *Regards,*
*Niya*

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

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

8

Hi Amalie,
    thanks for the fast response. this approach ive been using as well- for this reason i also rotated back the file in Daysim.
    I don´t know if you have experienced this... Sometimes, the Daysim Sensor point file used for a model imported from
     Ecotect has some odd coordinates, that do not match
the
   previously defined grid in Ecotect. This is usually the case when you export from
   Ecotect a model that has the North position rotated from the default axis for the simulation ... I suspect that
the
   original "test.pts" (Ecotect )grid becomes
   translated into a coordinate axis responing to the north orientation,
   and the sensor point file used in Daysim is then named
   "test.pts.rotated. pts".
    Hence, the ".da" files reimported to Ecotect from
  Daysim show the same rotated
   coordinates.
     
      This is my concern, WHETHER
they are reliable to
      display the simulation results without me having to intervene with rotating the scene in .hea file?
      best, Niya

-------- Оригинално писмо --------

От: Amalie Momme [email protected]

Относно: Re: [Radiance-daysim] Changing north direction in Daysim

До: DAYSIM discussion

Изпратено на: Сряда, 2014, Ноември 12 14:27:58 EET

    Hello Niya,
    
    I got the rotated pts file as well, however this was not correct -
but
this was the pts file I made myself. If you download the program Notepad++ (It's just an advanced Notepad which can handle different types of text files), you can see your pts file.
    
    A pts file
contains nothing but the coordinates of your sensor points and then a direction vector, (0 0 1) pointing up.
    
    Example:
    
    2.000 3.000 0.850 0.000 0.000 1.000
    
    3.000 3.000 0.850 0.000 0.000 1.000
    
    this is two sensor points placed at the coordinates (x,y,z) = (2,3,0.85), and they're both pointing straight up.
    
    With notepad++ you can create this, and when saving the file, type the name and add '.pts'. Voila, you have a pts file :slight_smile: Of course, then you have to know the coordinate system in DAYSIM, and I believe that north is always the same as positive y-axis.
    
    But if you do create your own sensorpoint file, you cannot see the results in Ecotect as I believe you can with the auto generated pts file.
    
    Good luck with it!
    
    Amalie

···

2014-11-12 13:13 GMT+01:00 Todor Syarov
      [email protected] > :
    
Hello Amalie,
       
       After I edit the.hea file and rotate the scene I get created a new filename.pts.rotate.pts file. I assume it is with the rotated points - i am trying to find a way to verify this still.
       
       I would be interested to know how do you create the rotated sensorpoint file?

       Best,
       
       Niya
       
-------- Оригинално писмо --------
       
От: Amalie Momme
        [email protected]
       
Относно: Re: [Radiance-daysim] Changing north direction in Daysim
       
До: DAYSIM discussion <
        [email protected] >
       
Изпратено на: Сряда, 2014, Ноември 12 14:08:52 EET
       
            Hi Niya,
            
            I also worked with Daysim and Ecotect. I did not use the auto generated grid in Ecotect, but made a sensorpoint file myself, so I do not know if it is the same with the Ecotect grid. However, when I tried to rotate the building in Daysim, the sensorpoints did not rotate with the model. I had to make a new sensorpoint file to match the rotated building.
            
            Cheers,
            
            Amalie
            
            2014-11-11 18:57 GMT+01:00 Todor Syarov
             [email protected] > :
           
                 Hello Alstan,
                
                 I need to apply the same command. There is some weird correspondance btw the Ecotect and the Daysim values, and I assume from reading the forums, that it is because of the North orientation.
                
                 Could you, please, assist me with how to
run the Daysim subprogram rotate_scene to make this work?
                
                  Regards,
                
                  Niya
                
_______________________________________________
            
Radiance-daysim mailing list
            
             [email protected]
            
             http://www.radiance-online.org/mailman/listinfo/radiance-daysim
            
_______________________________________________
     
Radiance-daysim mailing list
     
      [email protected]
     
      http://www.radiance-online.org/mailman/listinfo/radiance-daysim
     
var m3_u = (location.protocol==‘https:’?‘https://a.abv.bg/www/delivery/ajs.php’:'http://a.abv.bg/www/delivery/ajs.php’); var m3_r = Math.floor(Math.random()*99999999999); if (!document.MAX_used) document.MAX_used = ‘,’; document.write (" ");

9

Hi Niya

Unfortunately I haven't worked with results in Ecotect, so I have no
experience with importing DAYSIM results back into Ecotect. I had a lot of
sensor points (parametric study, offices in urban environments), so I used
Excel for data analysis and presentation. I created the 3D model in
Ecotect, that's all, and then manually set the material properties and
sensor points.

If you are concerned about reliability and you need only to create a
rendering of the Daylight Factor and particular daylight scenes without it
being too complicated, you can use the software Velux Visualizer - this
does 3D renderings as well. Of course not with the same precision as DAYSIM
(annual based tool) or RADIANCE (renderings). If you wish to do this, you
can create your 3D model in Google Sketchup, and then import this into
Velux Visualizer. This is very fast and simple and gives a nice visual
image. This does not take electrical lighting into account though, it is a
daylight tool :slight_smile: Also, there is Dialux but this I am less familiar with.
This does take electrical lighting into account.

I hope you figure it out, do post the answer if you do - I am sorry I do
not have the time to dig deeper into this.

Amalie

···

2014-11-12 13:53 GMT+01:00 Todor Syarov <[email protected]>:

Hi Amalie,

thanks for the fast response. this approach ive been using as well- for
this reason i also rotated back the file in Daysim.

I don´t know if you have experienced this...Sometimes, the Daysim Sensor
point file used for a model imported from
Ecotect has some odd coordinates, that do not match the
previously defined grid in Ecotect. This is usually the case when you
export from
Ecotect a model that has the North position rotated from the default
axis for the simulation ... I suspect that the
original "test.pts" (Ecotect )grid becomes
translated into a coordinate axis responing to the north orientation,
and the sensor point file used in Daysim is then named
"test.pts.rotated.pts".

Hence, the ".da" files reimported to Ecotect from Daysim show the same
rotated
coordinates.

This is my concern, WHETHER they are reliable to
display the simulation results without me having to intervene with
rotating the scene in .hea file?

best,
Niya

-------- Оригинално писмо --------
От: Amalie Momme [email protected]
Относно: Re: [Radiance-daysim] Changing north direction in Daysim
До: DAYSIM discussion <[email protected]>
Изпратено на: Сряда, 2014, Ноември 12 14:27:58 EET

Hello Niya,

I got the rotated pts file as well, however this was not correct
- but this was the pts file I made myself. If you download the program
Notepad++ (It's just an advanced Notepad which can handle different types
of text files), you can see your pts file.

A pts file contains nothing but the coordinates of your sensor points and
then a direction vector, (0 0 1) pointing up.

Example:
2.000 3.000 0.850 0.000 0.000 1.000
3.000 3.000 0.850 0.000 0.000 1.000

this is two sensor points placed at the coordinates (x,y,z) = (2,3,0.85),
and they're both pointing straight up.

With notepad++ you can create this, and when saving the file, type the
name and add '.pts'. Voila, you have a pts file :slight_smile: Of course, then you
have to know the coordinate system in DAYSIM, and I believe that north is
always the same as positive y-axis.

But if you do create your own sensorpoint file, you cannot see the
results in Ecotect as I believe you can with the auto generated pts file.

Good luck with it!

Amalie

2014-11-12 13:13 GMT+01:00 Todor Syarov <[email protected]>:

Hello Amalie,

After I edit the.hea file and rotate the scene I get created a new
filename.pts.rotate.pts file. I assume it is with the rotated points - i am
trying to find a way to verify this still.

I would be interested to know how do you create the rotated sensorpoint
file?

Best,
Niya

-------- Оригинално писмо --------
От: Amalie Momme [email protected]
Относно: Re: [Radiance-daysim] Changing north direction in Daysim
До: DAYSIM discussion < [email protected]>
Изпратено на: Сряда, 2014, Ноември 12 14:08:52 EET

Hi Niya,

I also worked with Daysim and Ecotect. I did not use the auto generated
grid in Ecotect, but made a sensorpoint file myself, so I do not know if it
is the same with the Ecotect grid. However, when I tried to rotate the
building in Daysim, the sensorpoints did not rotate with the model. I had
to make a new sensorpoint file to match the rotated building.

Cheers,
Amalie

2014-11-11 18:57 GMT+01:00 Todor Syarov <[email protected]>:

*Hello Alstan, *

  *I need to apply the same command. There is some weird correspondance
btw the Ecotect and the Daysim values, and I assume from reading the
forums, that it is because of the North orientation.*

  *Could you, please, assist me with how to run the Daysim subprogram
rotate_scene to make this work?*

  *Regards,*
*Niya*

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

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

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

10

Thanks Amalie,
  I do not want other software,need the precision of daysim and Radiance -no way around needed.
  Will be glad to post any results as soon as trigger it out.
  best, N.

-------- Оригинално писмо --------

От: Amalie Momme [email protected]

Относно: Re: [Radiance-daysim] Changing north direction in Daysim

До: DAYSIM discussion

Изпратено на: Сряда, 2014, Ноември 12 15:32:04 EET

    Hi Niya
    
    Unfortunately I haven't worked with results in Ecotect, so I have no experience with importing DAYSIM results back into Ecotect. I had a lot of sensor points (parametric study, offices in urban environments), so I used Excel for data analysis and presentation. I created the 3D model in Ecotect, that's all,
and then
manually set the material properties and sensor points.
    
    If you are
concerned about reliability and you
need only
to create a rendering of the Daylight Factor and particular daylight scenes
without
it being too complicated, you can use the
software Velux Visualizer - this does 3D renderings as well. Of course not with the same precision as DAYSIM (annual based
tool) or RADIANCE (renderings). If you wish to do this, you can create your 3D model in Google Sketchup, and then import this into Velux Visualizer. This is very fast and simple and gives a nice visual image. This does not
take
electrical lighting into account
though, it is a daylight tool
:slight_smile: Also, there is Dialux but this I am less familiar with. This does take electrical lighting into account.
    
    I hope you figure it out, do post the answer if you do - I am sorry I do not have the time to dig deeper into this.
    
    Amalie

···

2014-11-12 13:53 GMT+01:00 Todor Syarov
      [email protected] > :
    
       Hi Amalie,
       
        thanks for the fast response. this approach ive been using as well- for this reason i also rotated back the file in Daysim.
       
        I don´t know if you have experienced this... Sometimes, the Daysim Sensor point file used for a model imported from
  
        Ecotect has some odd coordinates, that do not match
the
   previously defined grid in Ecotect. This is usually the case when you export from
   Ecotect a model that has the North position rotated from the default axis for the simulation ... I suspect that
the
   original "test.pts" (Ecotect )grid becomes
   translated into a coordinate axis responing to the north orientation,
   and the sensor point file used in Daysim is then named
   "test.pts.rotated. pts".
    Hence, the ".da" files reimported to Ecotect from
  Daysim show the same rotated
   coordinates.
  
         This is my concern, WHETHER
they are reliable to
   
          display the simulation results without me having to intervene with rotating the scene in .hea file?
        
          best,
        
          Niya
        
-------- Оригинално писмо --------
От: Amalie Momme [email protected]
Относно: Re: [Radiance-daysim] Changing north direction in Daysim
До: DAYSIM discussion [email protected] >
Изпратено на: Сряда, 2014, Ноември 12 14:27:58 EET
        
             Hello Niya,
             
             I got the rotated pts file as well, however this was not correct -
but
this was the pts file I made myself. If you download the program Notepad++ (It's just an advanced Notepad which can handle different types of text files), you can see your pts file.
             
             A pts file
contains nothing but the coordinates of your sensor points and then a direction vector, (0 0 1) pointing up.
             
             Example:
             
             2.000 3.000 0.850 0.000 0.000 1.000
             
             3.000 3.000 0.850 0.000 0.000 1.000
             
             this is two sensor points placed at the coordinates (x,y,z) = (2,3,0.85), and they're both pointing straight up.
             
             With notepad++ you can create this, and when saving the file, type the name and add '.pts'. Voila, you have a pts file :slight_smile: Of course, then you have to know the coordinate system in DAYSIM, and I believe that north is always the same as positive y-axis.
             
             But if you do create your own sensorpoint file, you cannot see the results in Ecotect as I believe you can with the auto generated pts file.
             
             Good luck with it!
             
             Amalie
             
             2014-11-12 13:13 GMT+01:00 Todor Syarov
              [email protected] > :
            
Hello Amalie,
                
                After I edit the.hea file and rotate the scene I get created a new filename.pts.rotate.pts file. I assume it is with the rotated points - i am trying to find a way to verify this still.
                
                I would be interested to know how do you create the rotated sensorpoint file?

                Best,
                
                Niya
               
-------- Оригинално писмо --------
               
От: Amalie Momme
                [email protected]
               
Относно: Re: [Radiance-daysim] Changing north direction in Daysim
               
До: DAYSIM discussion <
                [email protected] >
               
Изпратено на: Сряда, 2014, Ноември 12 14:08:52 EET
               
                    Hi Niya,
                    
                    I also worked with Daysim and Ecotect. I did not use the auto generated grid in Ecotect, but made a sensorpoint file myself, so I do not know if it is the same with the Ecotect grid. However, when I tried to rotate the building in Daysim, the sensorpoints did not rotate with the model. I had to make a new sensorpoint file to match the rotated building.
                    
                    Cheers,
                    
                    Amalie
                    
                    2014-11-11 18:57 GMT+01:00 Todor Syarov
                     [email protected] > :
                   
                         Hello Alstan,
                        
                         I need to apply the same command. There is some weird correspondance btw the Ecotect and the Daysim values, and I assume from reading the forums, that it is because of the North orientation.
                        
                         Could you, please, assist me with how to
run the Daysim subprogram rotate_scene to make this work?
                        
                          Regards,
                        
                          Niya
                        
_______________________________________________
                    
Radiance-daysim mailing list
                    
                     [email protected]
                    
                     http://www.radiance-online.org/mailman/listinfo/radiance-daysim
                    
_______________________________________________
             
Radiance-daysim mailing list
             
              [email protected]
             
              http://www.radiance-online.org/mailman/listinfo/radiance-daysim
             
_______________________________________________
     
Radiance-daysim mailing list
     
      [email protected]
     
      http://www.radiance-online.org/mailman/listinfo/radiance-daysim
     
var m3_u = (location.protocol==‘https:’?‘https://a.abv.bg/www/delivery/ajs.php’:'http://a.abv.bg/www/delivery/ajs.php’); var m3_r = Math.floor(Math.random()*99999999999); if (!document.MAX_used) document.MAX_used = ‘,’; document.write (" ");