Forums Technical Discussion I'm looking for a way to "Id" duplicate arrays(SOLVED)

I'm looking for a way to "Id" duplicate arrays(SOLVED)

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Getyamamout
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I have a set of prims that have a simple array, that have . the way the prims get generated is leaving a couple of duplicate prims that need an attribute for deleting while keeping one of the duplicates.

I can only find ways to find duplicates of the same number in the same array. eg. 1,2,3,4,4,4,5,6,7,87,56,

I need to find exact matching arrays?

eg.

prim0 = my_array1,2 "keep"
prim33 = my_array1,2 "remove"
prim85 = my_array1,2 "remove"
prim90 = my_array3,8 "keep"
prim96 = my_array3,8 "remove"
prim100 = my_array3,8 "remove"
Edited by Getyamamout - Jan. 26, 2024 18:03:35
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tamte
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You can for example create a string out of all array elements and that string will be your "id"

You can sort them before if same element different order arrays should be considered equal
Tomas Slancik
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Getyamamout
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I thought of this last night, and have made a single ID number, to match the arrays. But I still have the issue of not knowing how to ask the question, if another prim has the same value as a different one? "using vex" I keep making loops that end up checking the value of the one I'm checking against making it always be a duplicate even if it's not????
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Getyamamout
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so I found idtoprim but can't get this to work ether ???
Edited by Getyamamout - Jan. 26, 2024 13:01:32

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animatrix_
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Hi,

You can use the findattribval function:
https://www.sidefx.com/docs/houdini/vex/functions/findattribval.html [www.sidefx.com]

I wouldn't recommend joining integers like that as 121 could be 1, 21 and 12, 1 which are not the same arrays.

You have to use space separated (or another character) strings.
Senior FX TD @ Industrial Light & Magic
Get to the NEXT level in Houdini & VEX with Pragmatic VEX! [www.pragmatic-vfx.com] https://lnk.bio/animatrix [lnk.bio]
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Getyamamout
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@animatrix_ you make a good point about the integers. While not a problem at the moment as inputs and outputs only go up to 8. If I change anything it would certainly break as you say.

All I want is to remove the prims that have matching arrays. As they have the same inputs and outputs. meaning there a duplicate prim.

Translating the documents to do what I think they should do. and write it in vex is driving me crazy. making me get even more confused ... I will keep trying and check back soon...
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Getyamamout
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so I have converted the array to a string but this just gives me another array exactly the same as before but in string format.

find attrib val is just giving -1

find attrib val count is giving 0

I am just getting totally lost. I don't know what I am doing. keep ending up in a big sloppy mess.
Edited by Getyamamout - Jan. 26, 2024 16:34:47

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tamte
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here is an example

there is an option Order Matters, that you can uncheck in case 2 arrays are considered identical with the same elements regardless of the order

Attachments:
ts_remove_prims_with_duplicate_arrays.hipnc (83.8 KB)

Tomas Slancik
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Getyamamout
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@tamte YOU MY FRIEND are an absolute SUPER STAR... THANK YOU SO MUCH it has done everything I wanted it to do.

I knew all that was needed were a couple of lines of vex.

I feel really bad for not being able to work this out myself.
You have gone out of your way to help. I am so grateful to everyone that helps.

this took about 10 seconds to understand what parts I needed. EXCELLENT work.

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