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


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?


Imagebasedrendering.3dm (225 KB) (569 KB)

Is this what you are trying to do?


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


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?

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


What Abraham said + The reason you’re getting a 1000500 image is that Honeybee keeps the aspect ratio of the view. If you want a 10001000 image you have to start with a square viewport.

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?

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).

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