Group according to attribute value

[Daskerdaks]

Hi, this is pretty basic, but for some reason I can't find anything on how to create a group based on attribute values?

My thinking is to use an expression like "attribute value equals string value", but I can't seem to figure out the syntax.

[jon3de]

You can use expressions in a group sop or vex in a wrangle e.g.

I made an example file but you can read also here

Jon

GroupfromAttrib.hipnc

[f1480187]

Also Partition SOP.

partition.hipnc

[mestela]

also the docs.

http://archive.sidefx.com/docs/houdini15.5/nodes/sop/group#creating-groups-based-on-point-attributes

 

[Daskerdaks]

Hi thanks :-)

My syntax issue is, however, more concerned with custom attributes and string values. I've attached a hip file, so you can se it:

I'm doing an object merge, creating object path attributes on the primitives. I then need to create certain groups with specific path attributes.

group_by_att.hipnc

[mestela]

Here's 3 ways, one using a wrangle and an exact match, a wrangle with a pattern, and a group with a pattern.

 

 

group_by_att_3_ways.hipnc

[Daskerdaks]

4 hours ago, mestela said:

Here's 3 ways, one using a wrangle and an exact match, a wrangle with a pattern, and a group with a pattern.

 

 

group_by_att_3_ways.hipnc

Hi Matt, excellent thanks, I can se that I had misunderstood the way the group sop works and also a bit of the syntax, the style I wrote apparently is closer to VEX, than HScript. By the way your website rocks, I'm definitely going to be using it as resource. :-)

Edited May 31, 2016 by Daskerdaks

[philpappas]

how would you convert every primitive attribute to each own group? if you have lots of them