Hello, I noticed a malfunctioning of the Smaller Than component. If I use the Equality component I get the same error. What can be wrong? Thank you. Francesco [Capture]

Ciao Francesco! have a look at these discussions: [image] Possible Bug in equality test components Each of the test components (Greater/Less than or equality) seem to produce erroneous results unless the values are filtered by a notes panel. I think the resu… …

Thank you Giulio, I was starting to think something like that could be the problem. Is there a proper way to tell Grasshopper that a number that “look” in a certain way is in that way? I think rounding the number to few decimals should work, what you think? I used this trick for the moment and i…

You can change the formatting of UI numbers in Grasshopper to some degree in the Preferences. However there are good reasons you don’t want to always see 10 decimal places. It makes numbers almost unreadable. The display rounding is supposed to show you the likely intent of the number, rather than i…

Thank you David for the additional explanation. Although in this case I want the opposite, that two numbers like 4.5000000000008 and 4.5000000000009 are considered like the same number by Grasshopper, so I used a simple rounding at the fourth decimal and it works .

In Pufferfish http://www.food4rhino.com/app/pufferfish I made a component “Equality within Tolerance” for this reason. Check it out if interested.

Michael, thank you for the reply and the suggestion. In GH there is already a Similarity component that works with a tolerance (that I could have used but then I would have needed an increased number of components) is it something similar? Anyway in this case would have been perfect a “Smaller Than …

Similarity uses a percent factor. My component uses the actual tolerance value you want to test within. To me it just makes more sense (usually have it set to .001)

Michael I understand. Interesting. Thank you again.

Sure here you can see it (wasn’t at a computer before) as well as native Gh way to test. The way you test is if the absolute value of A-B is smaller than tolerance it is true. [Equality] Equality.gh (11.3 KB)

Very interesting and useful indeed. Congratulation for your work Michael.

Strange behavior of Smaller Than component

Grasshopper

piac (Giulio Piacentino) December 12, 2017, 9:21am 2

Ciao Francesco!

have a look at these discussions:

Giulio

–
Giulio Piacentino
for Robert McNeel & Associates
giulio@mcneel.com

Equality node bug?

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Strange behavior of Smaller Than component

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