See if one item in (sub)list is true

I'm looking for the lightest/quickest way to see if just one item in a list is true.

as it is for now, im using the "average" component, to see if my average is above 0 as seen below:

I'm just thinking if this can be done easier using script. This is currently 1% of my data, so the calculation time is important. I've tried with mass addition instead of average, but MA is slowerl.

Best, Mathias

Attachments:

truelist.JPG, 70 KB

Replies to This Discussion

Permalink Reply by Sridevi Koonath on September 25, 2014 at 9:47am

What if you sort the list and get the last item?

Permalink Reply by Sridevi Koonath on September 25, 2014 at 9:51am

(I am not sure if any of these are faster that you current solutions)

Permalink Reply by Mathias s n on September 25, 2014 at 1:15pm

Hi Sridevi
Thanks for your answer. I used to use sort and item 0, but that one is even slower. Then I tried the mass addition and average. I will try the dispatch tomorrow, cheers!

Permalink Reply by Mathias s n on September 26, 2014 at 6:11am

just FYI:

Tried dispatch and cull, all of them are slower than the average function.

Processing times with my list:

Average: 10s

Mass addition: 20s

cull: 20s

dispatch: 2min

Maybe a VB script can do it better.

Permalink Reply by Sridevi Koonath on September 26, 2014 at 7:46am

Ah too bad. I tried the following lines in C# script components, but they take much longer

x.Max() which returns the maximum value in a list x

x.Contains(true) which checks whether a list x contains the value "true".

But it is possible that the script components are slower since they have to build the code first, as opposed to custom components for Grasshopper which are build in Visual Studio first.

In the meanwhile, I tried out the FSim (Find Similar Member in a set) component to look for "true" on a lot of sublists, that seems to be the fastest for "my" test case.