How to remove false value from list dynamo

Revit
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1

Hello guys; I have a problem with this list code. I want

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the “non false” result in case case it is Gold to appear alone in the list and add it to a new parameter in revit
Could you please advise
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2

The mask has to be true/false…
So try swapping the inputs going into the List.FilterByBoolMask node

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3

Helli Alien thank you for your advise;
but still, I cannot get the logic of how to get the not false value
in this case, it is Gold ??

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4

I can’t see your whole list… how did you get this false/ gold list?

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One way to get the ‘gold’ is to feed the original list into a == node…

Convert the list into string (use Object to string node) if the words are not already strings.

You will get a true/ false list then.

THEN use that true/ false list as the mask.

5

GPRS Calculation 5.dyn (100.4 KB)
It is related to a calculations
I tried to convert it to string
but what is “original list into a == node…”

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7

Calculation 5_2022-04-18_01-41-49
Calculation 5_2022-04-18_01-41-497442×3042 256 KB

8

I think it will be different because of the calculation
GPRS Calculation 5.dyn (113.7 KB)
Because the picture will not be clear

9

OK, I’m a bit confused.
I don’t have the same inputs as you do so the graph won’t show up the same unless you use
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If you’re JUST trying to get gold then just use the gold group and ignore the rest.
The true/ false list you get will then enable you to use the filter by bool mask to ONLY get the gold.

10

SOLVEED

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Thank you for your input it needed the == node as you mentioned
Really thank you :slight_smile:

11

Also… If I were you, I’d learn a little python.
ALL of the green bit can easily be put into a few lines of Python code.

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3 Likes
12

I would like to thank you so much
Definitely, I will take your advice; if you can recommend a basic source to start python (Taking into consideration I have zero coding background unfortunately)

13

There are loads of resources online. Free courses.
I just tried a few and some made more sense than others.

1 Like
14

Thank you and best of luck :slight_smile:

15

I would advise you to take a structured course instead of going through trial and error learning.
Here is the course I took.

1 Like
16

Thank you so much for sharing!! it is really useful
Best of luck :slight_smile:

17

You are welcome. Ensure to follow up with the second part of the course as well. Python Data Structures.