topic Re: Correct syntax of SSGET with :E in Visual LISP, AutoLISP and General Customization Forum

Correct syntax of SSGET with :E

tcorey — Wed, 01 Mar 2017 23:02:29 GMT

I am attempting to use SSGET's "_:E" function, but I have been unable to find an example.

If I use (setq obs (ssget "_:E")), the user is asked to pick a point. It correctly finds all objects touched by the pickbox. Sweet, but I want to feed a point variable to the function, not make the user pick.

If I use (setq obs (ssget "_:E pt)), I get error: bad point argument

and the same if I use (setq obs (ssget pt "_:E"))

Thanks, if you can help.

Tim

Re: Correct syntax of SSGET with :E

Ranjit_Singh — Wed, 01 Mar 2017 23:10:31 GMT

You can simply pass a point in ssget as

(ssget pt1); where pt1 is a list of x y and z

but it will only select a single entity that is on top of other entities at that point. To select multiple you need to call other methods. Example with fence

(ssget "_f" (list (mapcar '- pt1 '(0.01 0 0)) (mapcar '+ pt1 '(0.01 0 0))))

Re: Correct syntax of SSGET with :E

tcorey — Thu, 02 Mar 2017 00:35:37 GMT

Thanks for your reply, but the :E switch is meant to find all objects within the pickbox. From the Help:

:E Everything within the cursor's object selection pickbox.

Here's a link if you want to see the entire article:

http://docs.autodesk.com/ACD/2011/ENU/filesALR/WS1a9193826455f5ff1a32d8d10ebc6b7ccc-693e.htm

Re: Correct syntax of SSGET with :E

Ranjit_Singh — Thu, 02 Mar 2017 01:13:30 GMT

You are correct. But as far as I know you cannot pass a point argument to E: ssget method. The method that I pointed out with point is not the same as E: and isn't documented. Never the less, that is the only way, as far as I know where you can pass a single point as an argument.

You will have to use fence or cp, if you wish to select all objects at a point. I would be very eager to find out if there is anyother ssget way to pass a point argument and select multiple objects that cross at a point.

Re: Correct syntax of SSGET with :E

tcorey — Thu, 02 Mar 2017 02:41:56 GMT

Thanks for the clarification. It appears the :E function is only for use when there will be user input, I guess. That's a bummer, but c'est la vie.

I am going to follow your advice and use crossing.

Re: Correct syntax of SSGET with :E

Ranjit_Singh — Thu, 02 Mar 2017 03:15:15 GMT

You are welcome.