ssget filters

[pman860507]

can anyone direct me to a good tutorial on Ssget filters. mostly how to use the (-4 . "

 

Example:

E15,E1,E24... its pretty long i know you it kind of like this.

 

(ssget "X" '((2 . "E15)))

 

but I'm not exactly sure how to do it with multiple conditions.

 

Though it might look something like this put it returns nothing.

 

(setq ss (ssget "X" '((-4 . "<OR")(-4 . "<AND")(2 . "E14")(2 . "E15")(2 . "E1")
                       (2 . "E21")(2 . "L25")(2 . "E24")(2 . "E23")
                       (2 . "E8")(2 . "E18")(2 . "F16")(2 . "E21")
                       (2 . "F18")(2 . "E12")(2 . "L24")(2 . "M3")
                       (2 . "M11")(2 . "P15")(2 . "P14")(2 . "P17")
                       (2 . "A1")(2 . "A3")(2 . "A6")(2 . "EA7")(-4 . "AND>")(-4 . "OR>"))))

[Tharwat]

Check http://www.afralisp.net/autolisp/tutorials/selection-set-filters.php

[pman860507]

I got this but i will look around the site thanks.

   [b]Error: Page not found[/b]

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[pman860507]

thanks i found it.

 

the problem was the (-4 . "AND") it made it look for blocks that met the criteria for all of them.

 

(setq ss (ssget "X" '((-4 . "<OR")(2 . "E14")(2 . "E15")(2 . "E1")
                       (2 . "E21")(2 . "L25")(2 . "E24")(2 . "E23")
                       (2 . "E8")(2 . "E18")(2 . "F16")(2 . "E21")
                       (2 . "F18")(2 . "E12")(2 . "L24")(2 . "M3")
                       (2 . "M11")(2 . "P15")(2 . "P14")(2 . "P17")
                       (2 . "A1")(2 . "A3")(2 . "A6")(2 . "EA7")(-4 . "OR>"))))

 

works great.

 

Thanks.

[Tharwat]

I got this but i will look around the site thanks.

   [b]Error: Page not found[/b]
 
maybe due to the smiley that was beside it , anyway it is modified .

[pman860507]

I think that was the problem. thanks for the help.

[pman860507]

I guess while we are on the topic does anyone know if its possible to do ( 41 . "-*") to select them if they have a negative scale factor on x

 

It's not a big deal but it would be nice to only select the blocks with negative values on x. so i can add a counter) if its not possible i just wont have it.

[Tharwat]

if you mean the x factor for Blocks , I think it is not possible because it is a real negative value.

 

What are you trying to accomplish ?

[pman860507]

when people mirror blocks it changes the block to look backwards because the X scale factor is Negative. this is just changing them back to positive. Right now it selects all the blocks that meet the criteria so my block count would have all the blocks that have + and - values. if i can only have it go though - values then my counter would be accurate, but like i said its not really needed if its a pain in the ....

[Lee Mac]

Since you can use wildcard matches with Selection Set filter list strings, you can combine your block names into a single wildcard pattern:

 

(ssget "_X" '((0 . "INSERT") (2 . "E14,E15,E1 ... ")))

I guess while we are on the topic does anyone know if its possible to do ( 41 . "-*") to select them if they have a negative scale factor on x.

 

(ssget "_X" '((0 . "INSERT") (-4 . "<") (41 . 0.0)))

I suggest you read these sections of the Visual LISP IDE (VLIDE) Help Documentation:

 

+ Using the AutoLISP Language 
|
+--+ Using AutoLISP to Manipulate AutoCAD Objects
  |
  +--+ Selection Set Handling
     |
     +--+ Selection Set Filter Lists
        |
        +--> [color=red]Relational Tests[/color]
        |
        +--> [color=red]Logical Grouping of Filter Tests[/color] 

[pman860507]

i completely forgot about less.

 

(wow one of those days.)

 

I really do need to get on VISUAL LISP and i plan to soon. will check out that documentation thanks.

 

UPDATE-

 

i got it all working thanks all.

[Lee Mac]

I really do need to get on VISUAL LISP and i plan to soon. will check out that documentation thanks.

 

Visual LISP is not a necessity - I would strongly recommend a good grasp of Vanilla AutoLISP before embarking on Visual LISP, don't be misled by the title of both the help documentation & editor.