Topic: Modify DWGUNITS

[FELIX]

How to modify the value in -DWGUNITS from 3 to 6 by AutoLISP?

Command: -DWGUNITS

Drawing units:
  1. Inches
  2. Feet
  3. Millimeters
  4. Centimeters
  5. Decimeters
  6. Meters
Unit for length <3>: 6

[BIGAL]

Something like this

Code: [Select]

(command "-dwgunits" 6 2 3 "N" "Y")

[ScottMC]

With my ancient A2K, this works: (setvar "LUNITS" 2) <- for decimal

[Lonnie]

With my ancient A2K, this works: (setvar "LUNITS" 2) <- for decimal

Untested but?

Code: [Select]

(defun check-and-set-lunits ()
  (if (/= (getvar "LUNITS") 6) ; Check if LUNITS is not already set to 6
      (progn
        (setq change_units (strcat "\nLUNITS is currently set to " (itoa (getvar "LUNITS")) ", do you want to change it to 6? [Y/N]: "))
        (if (equal (getstring change_units) "Y")
            (setvar "LUNITS" 6) ; Change LUNITS to 6
            (prompt "\nLUNITS remains unchanged.")))))
           
(check-and-set-lunits)

Change for meters

[huiz]

With my ancient A2K, this works: (setvar "LUNITS" 2) <- for decimal

DWGUNITS can have another setting, it is optional to match AutoCAD units settings.

[PKENEWELL]

With my ancient A2K, this works: (setvar "LUNITS" 2) <- for decimal

DWGUNITS can have another setting, it is optional to match AutoCAD units settings.

I would rather note that LUNITS is a sub-setting within the UNITS command, along with ANGDIR, AUNITS, ANGBASE, INSUNITS, LUPREC and AUPREC. Other system Variables that effect units are MEASUREINIT, MEASUREMENT and UNITMODE.

[huiz]

I did't say it isn't. DWGUNITS is something different. From origin it comes from a vertical, AutoCAD Architecture I think. Within DWGUNITS you can set some unit settings and it is optional to match them with the AutoCAD units.
Normally you don't notice the DWGUNITS stuff but there are cases you do.
The best setting is to match AutoCAD units and then forget all about DWGUNITS.