Conditional evaluation help

Replies to This Discussion

Permalink Reply by David Rutten on March 27, 2015 at 1:39am

Surely if x is larger than 14000, then x is also always larger than 6000? 

Permalink Reply by Aditya Potipireddi on March 27, 2015 at 2:36am

David,

Yes that is true. I am trying to predict the position of blind by measuring and evaluating "x" for every hour( simple up or down). I had my criteria defined incorrectly. It would be a single value against which I will be evaluating i.e x >= 6000. 

and i think i can use the lager than component and dispatch which is easier.

However, if i were to do it via GHpython, how to make list of x read  and apply the condition.

Thanks,

Permalink Reply by David Rutten on March 27, 2015 at 8:10am

If it's just a single comparison, you can use the Larger Than component, but the expression components will also work:

x > 6000   (this will return true or false)

Or if you want two conditional evaluations:

x < 14000 And x > 6000    (will return a single true/false value)

If you want to return something other than just a boolean, then you need to use the If function:

If(x>14000, "REALLY BIG", If(x>6000, "Regular big", "small"))

The above expression will return "REALLY BIG" if x is larger than 14000, it wll return "Regular big" if x is between 6000 and 14000 and it will return "small" if x is less than 6000.

Permalink Reply by Aditya Potipireddi on March 28, 2015 at 3:28am

David- Thanks for the suggestion. I will try using the function expression.

Permalink Reply by 筑梦NARUTO on March 27, 2015 at 3:44am

hi Aditya

  For a simple example，Check the attached file

Attachments:

• if.gh, 12 KB

Permalink Reply by Aditya Potipireddi on March 28, 2015 at 3:30am

Hi- Thank you for posting a sample python script. I will test something similar for my project. Appreciate your help.