Sun Path_Diva - Shadow isn't appearing

by Martina Pacifici

Jun 12, 2017

Hi everybody!
I'm Martina, from São Paulo, Brazil.
I'm  starting now to learn about how to use Grasshopper and Rhino.
Especially now I'm trying to do a Sun Path according this video:
 
However,  shadow isn't appearing in my case.
I am in Diva Sun Path View but there is no shadow (screen shot).
In addition I would like to introduce Location by latitude and longitude, but do not know where I should introduce the values.
Somebody could you help me?
Really Thanks,
Martina

  • Ernesto Cesario

    Hi Martina!

    I really suggest you to have a look to this plug-in:

    http://www.grasshopper3d.com/group/ladybug

    there are lots of tutorials;

    for the geo-localization there is a fabulous map that collects all the EPW file at http://www.ladybug.tools/epwmap/

    Hope it helps

    Ern

    Jun 14, 2017

  • Martina Pacifici

    Hi Ernest!

    I am very grateful for your reply, I solved the problems above and I have already done various Ladybug tutorial, as you suggested:)

    However, I still have not been able to solve a fundamental issue: how to calculate the shaded surface area (numerically and not just graphically), even when more shadows intersect each other?

    I did find tutorials not enough clear about it. Could you give me some suggestion on this topic?

    Really thanks,

    Martina

    Jun 14, 2017

  • Ernesto Cesario

    Hi Martina,

    I'm glad that you turn to the dark side of the Force :)

    have a look here https://hydrashare.github.io/hydra/index.html

    hope this helps

    Ern

    Jun 14, 2017

  • Martina Pacifici

    Thanks you Ernesto!

    From your link, I've understood that maybe the file example "Vector Based Shadow Study"  ( https://urly.it/21yng ) was good for my purpose. So, I implemented the same procedure for my urban domain but unfortunately I can not see the shadows on the ground (look at the two red components in the screenshot). The same thing happens when I run the file exemple on my computer, shadows are not visible because they are not projected. Do you have another precious advice on this argument?

    Best,

    Martina

    Jun 16, 2017

  • Ernesto Cesario

    MArtina,

    could you please upload you grh file?

    as soon as I can I will take a look to your project..

    cheers

    Ernesto

    Jun 16, 2017

  • Martina Pacifici

    Of course, Ernesto!

    I posted (grh and 3md...cause my geometry is not visible in the grh)...

    The LadyBug says that error is in the "Data Conversion failed from Mesh to Curve".

    It depends of geometry?Too complex buildings?

    I tried with a more simple model (just one building) and I have the same problem.

    What can I do?

    Thanks for you interest!

    Martina

    Jun 16, 2017

  • Ernesto Cesario

    sorry Martina but I can't find attached your 3dm and grh files..I can see only a screenshot :)

    Jun 17, 2017

  • Martina Pacifici

    Ok Ernesto...

    you could try by this link (made by we transfer):

    https://we.tl/eWdPuv4xZP

    tell me if you can open it.

    Best,

    Martina

    Jun 17, 2017