Changing the resolution (Image quality) of imagebased simulation - Ladybug

Hello!

Im having trouble understanding how to manage the resolution of a imagebased rendering in ladybug. I have tried to change the width and height in the imagebased component but I seem to get the same resolution with a larger viewport (it is not changing the image quality, only the image size) The same happens when i try to change the viewport in rhino and set the imagebased resolution to 0.

Any suggestions on how to increase the quality of an rendering (imagebased simulation) in ladybug?

Thanks

Attachments:

Imagebasedrendering.3dm, 225 KB
Imagebasedrendering.gh, 569 KB

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Replies to This Discussion

Permalink Reply by Abraham Yezioro on September 27, 2016 at 5:09am

Is this what you are trying to do?

-A.

Attachments:

Capture.PNG, 100 KB

Permalink Reply by Abraham Yezioro on September 28, 2016 at 9:46pm

Or, in the HB_RADParameters component, improve the quality of the image.

-A.

Permalink Reply by Afshin Ghafoori on November 5, 2016 at 12:46pm

Hello Abraham!

Sorry for the late response. As i mentioned before, I have tested to increase the width and height in the imagebased component. It seems to be disfunctional, at least for me. I tried it once again, "reloading" the component (Latest version of Honeybee) and adding the resolution of 1000 to both width and height. Any other ideas? Anyone?

Attachments:

HoneybeeImageresolution.png, 518 KB

Permalink Reply by Abraham Yezioro on November 5, 2016 at 1:05pm

Have you tried my other option (HB_RADParameters component, improve the quality of the image)?

-A.

Permalink Reply by Mostapha Sadeghipour Roudsari on November 5, 2016 at 3:25pm

What Abraham said + The reason you're getting a 1000*500 image is that Honeybee keeps the aspect ratio of the view. If you want a 1000*1000 image you have to start with a square viewport.

Permalink Reply by Afshin Ghafoori on November 14, 2016 at 12:12am

Hello Mostapha!

Yes, I have tried to change the viewport ratio (Rhino) with various results. Anyway, I will resolve this issue yet had another question which is more relevant. How accurate is the weather data? What specific date is the data from?

Attachments:

Dataaccuracy.JPG, 220 KB

Permalink Reply by Sarith Subramaniam on November 14, 2016 at 10:39am

Weather data present in EPW files are based on Typical Meteorological Year. The methodology followed for generating generating TMY data for different locations varies slightly. Try this google scholar search.

Since a building, once designed, is expected to be in service for several decades, it makes sense to rely on weather data that is reflective of long term weather patterns of a particular place.

So, to answer your question indirectly, the temporal accuracy of weather data is almost irrelevant for the purposes of designing a building .i.e it is extremely unlikely that the illuminance values that you calculated using a daylighting simulation in HB will match the illuminance value that you physically measure using an illuminance meter. If you are interested in conducting validation studies of some sort, a more accurate resource will be using real-time data collected by a weather station close to you(direct-normal radiation and diffuse-horizontal radiation for daylighting).

Permalink Reply by Afshin Ghafoori on November 20, 2016 at 4:48am

Thank you Sarith, I will dig in to this part of the architecture!

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