Topic: ssget one layer, two different colors

[cadman6735]

LISP drives me crazy...

Code: [Select]

(defun c:test ( / )

  (setq ss (ssget "_x" (list (cons 8 "TESTLAYER") (cons -4 "<AND") (cons 62 4) (cons 62 6) (cons -4 "AND>"))))

  (sssetfirst nil ss)

(princ)
)
I have put that ("<AND")("AND>") all over the map on this, I can't get it to work...

Can someone set me straight, Please

Thanks

[ronjonp]

Use OR

Code - Auto/Visual Lisp: [Select]

1. (setq ss (ssget "_x" '((8 . "TESTLAYER") (-4 . "<OR") (62 . 4) (62 . 6) (-4 . "OR>"))))

Your code is looking for items that have two different colors which cannot happen.

[dgorsman]

Right.  As the original post stands, its trying for entities with (62 . 4) AND (62 . 6), which are mutually exclusive.

[cadman6735]

see LISP drives me crazy,

the logic is wrong in my head, OR to me would be one "or" the other, (not both)

AND would indicate color 1 "and" color 2 (both together)

Anyway, RonJon, your ninja skill have helped me once again, thank you very much...

[CAB]

Just the way you phrase it.
I want apples AND they can be green OR red.

With ssget the AND is not needed most of the time as it is implied.

[snownut2]

I want apples AND they can be green OR red.

Don't eat to many green ones though......

[dgorsman]

see LISP drives me crazy,

the logic is wrong in my head, OR to me would be one "or" the other, (not both)

AND would indicate color 1 "and" color 2 (both together)

Anyway, RonJon, your ninja skill have helped me once again, thank you very much...

Standard Boolean logic.  An entity has only one color property - it can be RED or GREEN.  I cannot be RED and GREEN.  Apply the logic to the entities, not the filter settings.

[RGUS]

Use OR

Code - Auto/Visual Lisp: [Select]

1. (setq ss (ssget "_x" '((8 . "TESTLAYER") (-4 . "<OR") (62 . 4) (62 . 6) (-4 . "OR>"))))

Your code is looking for items that have two different colors which cannot happen.

With the 'Sum over histories' and quantum mechanics it might. Just kidding... good solution here.

[cadman6735]

Thanks again guys, this site is one of the best for friendly and fast help.

[Lee Mac]

the logic is wrong in my head, OR to me would be one "or" the other, (not both)

You're thinking of XOR (eXclusive OR)