Multiple If Statements

Hey guys,

This is the first time I couldn't find a solution in the forum, so I'll just go ahead and ask you guys!

I have the following statements I want to implement:

If 0≤x≤30 y=0.8

If 30<x<60 y=[0.8*(60-x)]/30

If x≤60 y=0

I tried with an expression, but the count of arguments is obviously too high, so I'll jsut add a screenshot of how far I've gotten, although it's fundamentally wrong.

http://gyazo.com/15fa63823ebc697f644dac765192570f

It' s also crucial, that the result(y) can be connected to an expression afterwards, since it's for some structural calculations of a truss. By changing some parameters on the truss (e.g. height, number of points etc.) the angle(x) will differ and therefore change all following calculations.

Thanks in advance!

EDIT: If necessary I'll add the GH file, but it's gotten pretty big with some Karamba and Robot stuff, making it quite chaotic to some extent.

Replies to This Discussion

Permalink Reply by David Rutten on October 14, 2014 at 5:28am

You don't have to write x=true in the if statement. If X is a boolean value it can be used directly.

To put all of the above into a single (albeit horribly unreadable) statement:

If(x <= 30, 0.8, If(x < 60, (0.8*(60-x))/30, 0)

It's not quite the same as your three statements, but your statements are contradictory. They are undefined for when x is less than zero or more than 60, and the third statement covers both previous statements. Was it supposed to be: