When doing daylight simulation you might be interested in overall areas of day lit zones (e.g. for for LEED EQc 8.1 compliance you want to know about areas with more than 250 Lux of 2% daylight factor). I found this interesting tutorial today:

Finding Area of Contours in Ecotect/Radiance Analysis Grid

Let me know how it works for you.

ecotect_contours

As well I would like to put this question out there: What software are YOU using for LEED Credit EQ 8.1 “Daylight 75% of Spaces”? Let me know by commenting to this post. Be aware that comments on this blog are moderated, it might take a day or so until they appear.