topic Re: CHANGING LAYER PROPERTIES, IGNORING MISSING LAYERS in AutoCAD Forum

CHANGING LAYER PROPERTIES, IGNORING MISSING LAYERS

Anonymous — Tue, 25 Feb 2020 20:27:18 GMT

I am workingona script routine to batch run on a large number of files. I want it to rename a couple layers, Change layer colours and add a new layer. I can get it to do all these things, except if a layer is missing. The files that i am importing may not have layer 'c' but i am changing properties for layers 'a,b,c,d,e' Because the script cannot find layer 'c', it crashes the script. How do i tell the script to ignore a layer if it is missing? below is a sample of the script.

(if (tblsearch "LAYER" (substr (getvar 'dwgname) 1 (- (strlen (getvar 'dwgname)) 4)))

(command "_rename" "_layer" (substr (getvar 'dwgname) 1 (- (strlen (getvar 'dwgname)) 4)) "cut"))

-rename

Scribe-text

Etch

-rename

NO KERF _ CUT _ NO LEAD-IN

Cut2

-la

bom

-la

bom

-la

rgb

0,0,255

-la

cut

-la

rgb

0,255,255

-la

etch

-la

rgb

255,0,255

-la

display

-la

rgb

255,0,0

-la

cut2

-la

rgb

0,200,200

Betreff: CHANGING LAYER PROPERTIES, IGNORING MISSING LAYERS

cadffm — Tue, 25 Feb 2020 20:34:09 GMT

Without programming

Create layer first

-LAYER

THAW

MAKE

RENAME LAYER

newname

Re: CHANGING LAYER PROPERTIES, IGNORING MISSING LAYERS

Kent1Cooper — Wed, 26 Feb 2020 16:17:52 GMT

What version are you using, and/or overlay program? I don't have [in 2019, and Help for 2020 doesn't mention, nor do I recall from earlier versions going way back] a LC option in -LAYER, and RGB is not the way to use that kind of color [it's the Color option and then beneath that the Truecolor option]. But in any case:

You don't need to make a Layer current in order to assign a color to it. And if you do it by naming the Layer(s), and there is/are no such Layer(s), a message will go by that it didn't find it/them, but it won't crash -- it will just go back to the main prompt. Also, you can combine all of this into one Layer command -- you don't need to complete the command and then start it again, but can just choose further options and carry on. Using my kinds of command options:

-LAYER

make ; this creates it like New option, and makes it current in the process -- no Set option required

bom

color Truecolor

0,0,255

color Truecolor

0,255,255

cut

color Truecolor

255,0,255

etch

color Truecolor

255,0,0

display

color Truecolor

0,200,200

cut2

Re: CHANGING LAYER PROPERTIES, IGNORING MISSING LAYERS

cadffm — Wed, 26 Feb 2020 16:27:46 GMT

@Kent1Cooper schrieb:

-LAYER

make ; this creates it like New option, and makes it current in the process -- no Set option required

Only if the Layer is not already there &freezed,

that's why i answered with the bulletproof way, first thaw, then make:

@cadffm schrieb:

Without programming

Create layer first

-LAYER

THAW

C

MAKE

C

RENAME LAYER

C

newname

Re: CHANGING LAYER PROPERTIES, IGNORING MISSING LAYERS

Kent1Cooper — Wed, 26 Feb 2020 18:17:02 GMT

@cadffm wrote:
.... first thaw, then make:
....

Yes, that's a good idea if it's possible that it might exist but be frozen, since a frozen Layer cannot be made current as the Make option will want to do.

[Why you would Make a Layer and then immediately rename it is beyond me -- just Make it under the desired name in the first place. But if there's some reason to do it that way, there's a Rename option inside the -Layer command, so you don't need to close Layer and open up a Rename command.]

Re: CHANGING LAYER PROPERTIES, IGNORING MISSING LAYERS

Anonymous — Mon, 02 Mar 2020 12:34:29 GMT

Thanks for the help guys. I had to have one of our programmers step in and write it up for me.