1. what the “These attributes are transformed, if they are marked as transforming.” - means in the very first line ?

2. here “transformed” means modification or changing of location or completely different ?

3. is there any similarity b/w attribute transform and this option ?

4.what's the point of having this option available to us ? (reasoning for above questions. )

snapshot :-

1. attribute is ‘marked transforming’ if it's type info or qualifier is set to one of the transforming types as mentioned (Position, Notmal, Vector, Quaternion, Transform Matrix)
you can set those using for example Attribute Create SOP, attribtypeinfo() VEX function, Add Attribute VOP, …

2. transformed means the transform matrix will get applied correspondingly to the type info, so Position attributes will be fully transformed, Vector just rotated+scaled, Quaternion just rotated, …
so yes, it modifies the values of such attributes which for Position attributes can be also thought as changing the location

3. what do you mean by attribute transform? Transform by Attribute SOP? if so then yes, it's the same as Attributes to Transform parameter in that SOP, or in Deformation Wrangle SOP, Bend SOP, Point Deform SOP, or Other Attributes in Bone Deform SOP, …

4. to have all relevant attributes correctly transformed, not just P

1) create a box,
2) append an ‘Attribute Create’ node and create a float attribute named “N” with size 3 and type Normal. Set its value to {0, 1, 0}
3) Now append a transform node. Apply some rotation so that N values change. See what happens to N values when you exclude it from the ‘attributes’ list, by replacing “*” with P.
4)Restore all attributes to transform in the list, by writing back “*”. See what happens to N values when you go back in the ‘Attrib Create’ node and set the type to “NONE”.

Andr
ll attrib

not bad , bro, thanks very quick results i would say. god bless you .

tamte
1. attribute is ‘marked transforming’ if it's type info or qualifier is set to one of the transforming types as mentioned (Position, Notmal, Vector, Quaternion, Transform Matrix)
you can set those using for example Attribute Create SOP, attribtypeinfo() VEX function, Add Attribute VOP, …

2. transformed means the transform matrix will get applied correspondingly to the type info, so Position attributes will be fully transformed, Vector just rotated+scaled, Quaternion just rotated, …
so yes, it modifies the values of such attributes which for Position attributes can be also thought as changing the location

3. what do you mean by attribute transform? Transform by Attribute SOP? if so then yes, it's the same as Attributes to Transform parameter in that SOP, or in Deformation Wrangle SOP, Bend SOP, Point Deform SOP, or Other Attributes in Bone Deform SOP, …

4. to have all relevant attributes correctly transformed, not just P

tamte
1. attribute is ‘marked transforming’ if it's type info or qualifier is set to one of the transforming types as mentioned (Position, Notmal, Vector, Quaternion, Transform Matrix)
you can set those using for example Attribute Create SOP, attribtypeinfo() VEX function, Add Attribute VOP, …

2. transformed means the transform matrix will get applied correspondingly to the type info, so Position attributes will be fully transformed, Vector just rotated+scaled, Quaternion just rotated, …
so yes, it modifies the values of such attributes which for Position attributes can be also thought as changing the location

3. what do you mean by attribute transform? Transform by Attribute SOP? if so then yes, it's the same as Attributes to Transform parameter in that SOP, or in Deformation Wrangle SOP, Bend SOP, Point Deform SOP, or Other Attributes in Bone Deform SOP, …

4. to have all relevant attributes correctly transformed, not just P

bro second point(2.) was all i need to hear . greatly explained and thanks for replying.