Creating an Expression in Grasshopper

Hi everyone,

I would like to ask for help in creating an expression. The equation that I'm trying to solve is:

However, when I input the expression into the expression component in grasshopper, there is an error.

Do anyone have any suggestion regarding this problem? Thank you. I would appreciate the help.

Replies to This Discussion

Permalink Reply by Joseph Oster on September 6, 2017 at 7:30am

Attachments:

expression_2017Sep6a.gh, 5 KB

Permalink Reply by SXS on September 6, 2017 at 7:38am

Hi Joseph,

Thank you very much for your help. If I may ask, is it also possible to create an integration expression in the expression component?

Permalink Reply by Joseph Oster on September 6, 2017 at 7:43am

I don't know what you mean? Integral calculus? That might require iteration (Anemone loop)?

Permalink Reply by SXS on September 6, 2017 at 7:56am

Hi Joseph,

Yes, integral calculus. I see, thank you very much for your help. I really appreciate it.

Permalink Reply by David Rutten on September 6, 2017 at 10:37am

The expression language doesn't understand anything about calculus, it just performs the steps in the correct order. If you want integrals or derivatives, you'll either have to write them as separate expressions, or approximate them by sampling an expression and interpreting the results.

Permalink Reply by SXS on September 6, 2017 at 5:34pm

Hi David,

I see, then is it possible to script integration in grasshopper python?

Permalink Reply by David Rutten on September 6, 2017 at 7:02pm

Probably, don't know much about python, but I imagine there's some libraries out there that allow you to enter an expression and get the integrals.

Permalink Reply by SXS on September 6, 2017 at 9:06pm

Hi David,

Thank you very much for your help. It's really helpful.

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