topic Re: File size increase when I delete stuff in AutoCAD Forum

File size increase when I delete stuff

stefan.lithen — Tue, 24 Jan 2017 11:33:35 GMT

I'm trying to decrease my filesize of a drawing.

Purge finds nothing so I guess it is pretty clean that way.

I wanted to test if removing alot of liines would help but that actually increased the file size by a few KB.

Whats going on here?

Re: File size increase when I delete stuff

Alfred.NESWADBA — Tue, 24 Jan 2017 11:42:35 GMT

Hi,

>> I wanted to test if removing alot of liines would help but that actually increased the file size by a few KB.

What's the filesize and what is "a few kB"?

If the drawing has some megabytes I never would think about 100kB or so (the time to look into it is much more expensive compared to the cost of the disk-space).

>> I wanted to test if removing alot of liines

Also let us know what is "a lot of lines" ... and even more important: what else is inside the drawing, if you removed 100 lines from a drawing that contains 500 spline objects or 3D-objects like surfaces or 3D-solids then you will not see that big change in file-size.

To make some statements more clear: can you upload the drawing?

- alfred -

Re: File size increase when I delete stuff

stefan.lithen — Tue, 24 Jan 2017 11:51:11 GMT

Because of industry espionage I'm not allowed to put the file on internet 😕

I deleted about about 3500 lines and saved the file.

It increased from 5120 kB to 5142 kB.

Re: File size increase when I delete stuff

stefan.lithen — Tue, 24 Jan 2017 11:57:29 GMT

Actually I could delete almost the entire drawing and file size still increased a few KB.

Then I removed all text elements with style STANDRAD, then it DECRESED to about 2.9 MB

Must be something with the text

Re: File size increase when I delete stuff

Alfred.NESWADBA — Tue, 24 Jan 2017 12:11:01 GMT

Hi,

>> I deleted about about 3500 lines and saved the file.

And what other objects are inside the drawing?

Just created a drawing with 1000 lines, the difference between an empty dwg and this dwg with 1000 lines is 69kB, so for a drawing with 5MB ==> close to nothing. 😉

>> Then I removed all text elements with style STANDRAD, then it DECRESED to about 2.9 MB

>> Must be something with the text

Why? Removing objects results (by default) in reduced file-size, what is wrong with that now?

Again it depends on which type of text (TEXT or MTEXT) and it depends on how many text objects you removed.

(and yes, TEXT and especially MTEXT needs a lot more of storage space compared to LINE objects).

- alfred -

Re: File size increase when I delete stuff

stefan.lithen — Tue, 24 Jan 2017 12:34:22 GMT

Hum ok.

I have 1551 TEXT objects (not MText) with style STANDARD.

Is it normal that is can take up as much as the difference from 5.1 MB to 2.9 MB?

Thanks for your input so far!

Re: File size increase when I delete stuff

Alfred.NESWADBA — Tue, 24 Jan 2017 12:42:13 GMT

Hi,

>> Is it normal that is can take up as much as the difference from 5.1 MB to 2.9 MB?

No, not for plain text objects, but as long as we can't see the drawing (I understand that you can't forward it out of security reasons) it's hard to guess why it might be possible (e.g. a lot of layers are purged then or an application had attached data to that text objects or the text objects were constrained to other geometry or ...

- alfred -

Re: File size increase when I delete stuff

stefan.lithen — Tue, 24 Jan 2017 12:44:18 GMT

Ok I understand.

I will look into it a bit more.

Thanks!

Re: File size increase when I delete stuff

pendean — Tue, 24 Jan 2017 13:54:18 GMT

WBLOCK command is the best way to reduce your file size quickly and immediately: need help using it?

Re: File size increase when I delete stuff

john.vellek — Tue, 24 Jan 2017 15:14:05 GMT

Hi @stefan.lithen,

You are welcome to send me your file privately at john.vellek@autodesk.com. I can take a look to see if there is anything obvious that can reduce the file size.

Re: File size increase when I delete stuff

Anonymous — Tue, 24 Jan 2017 15:41:02 GMT

WBLOCK is a last resort as it leaves behind layout tabs and requires their reimportation back into the drawing. If the components in layout space are the problem, you've just moved the problem to a different file.

As for why a file size might increase after deleting elements, don't really know, but it is rather common, I've seen it before on numerous occasions. That said we frequently work with models that weigh in at 10MB -100MB and larger, a few hundred KB one way or another isn't ever noticed.

We regularly purge with this:

;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;    PGA.lsp
;;;    Falcon Design Services, Inc. 2000, 2002, 2006, 2010, 2013, 2016
;;;    Permission to reuse, share, post, copy, borrow, steal, or generally do with it 
;;;    whatever you wish is hereby granted.  Like that would make a lot of difference anyway.
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defun purgeall (/ $acad $doc) 
     (setq $doc (vla-get-activedocument (vlax-get-acad-object))) 
     (repeat 3 
     (vla-purgeall $doc) 
     ) 
     (vlax-release-object $doc) 
     (princ  "\n") 
     (princ) 
)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(defun c:pga ()
	(command ".undo" "BEGIN")
	(setvar "cmdecho" 0) (setvar "nomutt" 1)(princ)
	(command 
		"-purge" "b" "*" "n"
		"-purge" "d" "*" "n"
		"-purge" "la" "*" "n"
		"-purge" "lt" "*" "n"
		"-purge" "ma" "*" "n"
		"-purge" "mu" "*" "n"
		"-purge" "p" "*" "n"
		"-purge" "sh" "*" "n"
		"-purge" "st" "*" "n"
		"-purge" "m" "*" "n"
		"-purge" "t" "*" "n"
		"-purge" "v" "*" "n"
		"-purge" "r" "*" "n"
		"-purge" "z"		
		"-purge" "e"
	)
	(repeat 2 (purgeall))
	(princ "\n\n\t\t\t Drawing has been completely purged.")
	(setvar "cmdecho" 1)(setvar "nomutt" 0)(princ)
	(command ".undo" "end")
	(princ) 
)
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(princ "\n       |   Enter PGA to execute   |")
(princ)

Re: File size increase when I delete stuff

GrantsPirate — Tue, 24 Jan 2017 17:25:35 GMT

Set ISAVEPERCENT to 0, either through the command line or Options>Open and Save...

Re: File size increase when I delete stuff

Anonymous — Tue, 24 Jan 2017 18:12:30 GMT

I am using 2016 C3D - we have drawings that bloat in size that contain crazy linetypes, styles, etc.

I -pu (purge) all and regular purge command making sure that Automatically purge orphaned data is selected and purge nested items.

Then it will purge all. If someone grabs anything from an infected file it puts it into your current drawing.

Crazy times....this will deflate your file.....

you should always audit and fix all the errors as well.

Re: File size increase when I delete stuff

john.vellek — Tue, 24 Jan 2017 18:17:41 GMT

Hi @stefan.lithen,

I am checking back to see if my post or others helped you with your problem.
Please add a post with how you decide to proceed and your results so other Community members may benefit.

Re: File size increase when I delete stuff

stefan.lithen — Wed, 25 Jan 2017 06:08:56 GMT

Hi.

I went through the entire drawing yesterday, deleting one machine at a time and then lookking at the file size.

There was not one singel thing the made the drawing particulary big so I guess the size is pretty normal after all.