pcb auto annotation. Altium designer 15.0

[georpo]

Hello everyone!
I am in the middle of a big pcb design without schematic and I have named all capacitors "C?" , all resistors "R?", all ICs "U?"  etc.
Is there a way for Altium to assign designators automatically? C1,C2 R1,R2 etc.

Thanks for any ideas.

[thm_w]

You asked here and already got an answer: https://www.reddit.com/r/Altium/comments/1arra8x/altium_designer_auto_annotation/

[PlainName]

Don't have AD15 to check, but from the Tools menu there could well be a "Re-Annotate..." menu item which will probably do the biz for you.

[Batang]

"a big pcb design without schematic"

Why!!

[georpo]

hello and thanks for all replies.
It does not matter how I got here.
without schematic, is there a way to have altium change all the C? to C1,C2 etc

[PlainName]

without schematic, is there a way to have altium change all the C? to C1,C2 etc

As I posted earlier, use the Re-Annotate menu item from the Tools menu (screeny from AD13 attached).

[georpo]

re-annotate changed ALL designators to "1"
I already tried this before asking.

[PlainName]

OK. It would be useful for you to mention that at the start, although I don't know why it doesn't number them sequentially.

Edit: Just tried this with a plain PCB which isn't in a project and has no schematic. None of the components had the ? number (that is, they were already C1, C2, etc. I chose ascending x then ascending y, then all the various combinations and even 'use board position'. Every time the component designators were changed appropriately.

You might try click a component, then right click and select 'same as' using only 'component' as the match. That will select all components. Then run the re-annotate and see if that helps. If not then your board is borked or your designators aren't actual designators, or something similar.