entmod issue...

OK, so I went through the different entmod posts here and really didn't find anything specific for my case so here I go...

I have the following line of code that is modifying a block to replace it with another block. It works most all the time but I can not figure out why I have cases where it does not work.

(entmod (subst (cons 2 new_sym) (assoc 2 (entget ent_name)) (entget ent_name))
(entupd ent_name)


I am using MAP 6 and all my entity mods are done via LISP...


Any ideas??

 

I have a routine that will do exactly this... if you want it i will send it...
OK, so I went through the different entmod posts here and really didn't find anything specific for my case so here I go...

I have the following line of code that is modifying a block to replace it with another block. It works most all the time but I can not figure out why I have cases where it does not work.

(entmod (subst (cons 2 new_sym) (assoc 2 (entget ent_name)) (entget ent_name))
(entupd ent_name)


I am using MAP 6 and all my entity mods are done via LISP...


Any ideas??

 

Have you tried the Express Tools "blockreplace" command?

Joe Burke

 

The lines of code work fine most all the time, maybe 98% of the time considering the volume of usage our users utilize the routine it's included in. If you can, please send the routine and I'll have a look at it.
I have a routine that will do exactly this... if you want it i will send it...
OK, so I went through the different entmod posts here and really didn't find anything specific for my case so here I go...

I have the following line of code that is modifying a block to replace it with another block. It works most all the time but I can not figure out why I have cases where it does not work.

(entmod (subst (cons 2 new_sym) (assoc 2 (entget ent_name)) (entget ent_name))
(entupd ent_name)


I am using MAP 6 and all my entity mods are done via LISP...


Any ideas??

 

would you be willing to share a block for which that code does not work? i've never seen it not work

thanks
OK, so I went through the different entmod posts here and really didn't find anything specific for my case so here I go...

I have the following line of code that is modifying a block to replace it with another block. It works most all the time but I can not figure out why I have cases where it does not work.

(entmod (subst (cons 2 new_sym) (assoc 2 (entget ent_name)) (entget ent_name))
(entupd ent_name)


I am using MAP 6 and all my entity mods are done via LISP...


Any ideas??

 

You have the statement below, the entmod statement. It works but it still leaves the old block there. But this only happens occasionally and I'm trying to figure out why. I basically have 2 blocks in the end, one on top of the other...
would you be willing to share a block for which that code does not work? i've never seen it not work

thanks
OK, so I went through the different entmod posts here and really didn't find anything specific for my case so here I go...

I have the following line of code that is modifying a block to replace it with another block. It works most all the time but I can not figure out why I have cases where it does not work.

(entmod (subst (cons 2 new_sym) (assoc 2 (entget ent_name)) (entget ent_name))
(entupd ent_name)


I am using MAP 6 and all my entity mods are done via LISP...


Any ideas??

 

You were missing a parenthesis in there. The routine will fail if the new block isn't already defined in the drawing, but it will fail simply by not doing anything.

I use similar routines to replace blocks, and have never seen them leave an extra instance of the block. I don't see how that's possible in your entmod, though I'm a little suspicious of the double entget. I'd get the entity data in a variable and then hand that variable to the entmod, rather than getting the data twice during the entmod.