Hi, I’m trying to subtract window areas from wall areas and whenever there isnt a window within a wall, it returns an empty list, which doesn’t work in subtracting formula a-b = c, where a = wall area, b = window area. I suppose a python if else statement might work here, but I don’t know how to fo…

Reading back, I missed a few steps… musta had a phone call mid post or something. Sorry bout that. I edited it and provided an example below. [Add%20zero%20value%20into%20Empty%20List]

Empty List to Value

Mark.Ackerley November 10, 2018, 9:40pm 3

Hey,

Just for completeness, @Andreas_Dieckmann also posted a solution to a similar sounding question…

Hopefully that’s useful,

Mark

1 Like

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Empty List to Value

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