I am not sure what you are asking? DIVA already gives UDI in the 100-2000 lx range.
i am working on daylighting in residential buildings.I want threshold of UDI(100-2000 lux) for this typology. I taken a threshold of 50% of the time for UDI (100-2000 lux) range, but my results are 58%,67.35%,74.23% and 86.34% of UDI (100-2000 lux) range in four cardinal directions.All values are above 50%, so how i can classified which value is average, good and excellent to give proposal.
I am afraid that there is not an easy answer here, but I would like to point out that UDI 100-2000 is not meant to be used alone. The UDI >2000 metric (at least) should be paired with it to understand which rooms have too much lighting. 67.35% is not bad, but it suddenly looks awful if the rest of that 33% is overlit.
I want to modify the threshold value of UDI to 3000lux, it is possible with Daysim plug in Ecotect 2011?
If yes, please convey the steps How i should modify the value.