Download GHPython (you may need to register and log in to download).

We need the Python component so Grasshopper can read the Honeybee components. Honeybee is written using in Python for Grasshopper.

falsecolor2.exe (FalseColor2 is developed by Thomas Bleicher and is based on RADIANCE falsecolor. Links from Ladybug group page.).

evalglare.exe (Evalgalare is developed by J.

Download these files and copy them into the bin folder. You’ll need them for glare analysis and false colour rendering. Once installed, check if you have the following files in C:/Radiance/bin: falsecolor2.exe and evalglare.exe. (Not anywhere else – I seemed to get errors otherwise.)

Download Radiance from the NERL, or from Radiance-online if you have problems.

Recently, an installer has been made available to make this much simpler. Radiance has its roots in UNIX, which historically made it difficult to install on Windows. Mostapha has created a guide and a video for further guidance on installing DAYSIM and Radiance.

Install in the default location – which should be C:/DAYSIM/.

In my case, this took me to C:UsersjramsdenAppDataRoamingGrasshopperUserObjects. In Grasshopper, go File > Special Folders > User Objects Folder. If installation doesn’t work, make sure the files are in the correct location. Grasshopper will put the files in the right place and Honeybee/Ladybug tabs should appear in Grasshopper. To install, simply unzip the file and drag the contents (roughly 100 items) into the Grasshopper window.

(See my Ladybug installation guide.) Join this group (you may need to register) and download the Ladybug/Honeybee files from the link on the group page. Honeybee comes packaged with Ladybug, another of Mostapha’s plugins. Unfortunately Honeybee isn’t compatible with Rhino 4, but you can use the trial version of Rhino 5 for 90 days.

This can be a little fiddly – this guide shows how I got round it. So in order to install Honeybee, we also need to install these tools. Honeybee links to third party analysis tools in order to do its calculations. Honeybee is a plugin for Grasshopper for daylight analysis, created by Mostapha Sadeghipour Roudsari.

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