Viewport Scale

[nzoro99]

Hello,

 

Sheet is exported from Revit.

Running two lines of lisp on viewport

(setq v (car(entsel)))
(vla-get-Standardscale (vlax-ename->vla-object v)) getting 24
(vla-get-customscale(vlax-ename->vla-object v))getting 0.0104167

 

 

web says.... 24 is scale factor for 1/2"=1"-0

 

My viewport displays 1/8"=1'-0

 

Please explain why AM i getting 24(instead of 96) or/and 0.0104167

Thank you

[mhupp]

You have the correct scale. 24 is a named scale and is probably the closest to 1/8"=1'-0 or 0.0104167

Use command SCALELISTEDIT.

 

[ReMark]

First off, the scales shown above are used in civil engineering drawings (ex. - site plans, road layouts), not architectural drawings (ex. - houses, industrial/commercial buildings).  nzoro99 is using architectural scaling.

Choose your scale. For example:  1/8” = 1'

Invert the fraction and multiply by 12 to get:  8/1 x 12 = 96

Your scale factor is 96.  It is not 24.  That would be 1/2" = 1'

 

Edited February 13, 2022 by ReMark

[nzoro99]

WARNING:

 

Not sure what I'm talking about.:)

 

(vla-get-Standardscale (vlax-ename->vla-object v)) getting 24
(vla-get-customscale(vlax-ename->vla-object v))getting 0.0104167

(= 96
           (/ 1. (vla-get-customscale (vlax-ename->vla-object viewport))) getting 96
          )

 

 

I've accepted the fact that revit exported a drawing of 1/8"=1'. The third line gave this result 96.

 

Original revit file displays the scale on this sheet as well 1/8"=1'

[ReMark]

You're not following the math (i.e. - scale factor) I posted previously?

Edited February 13, 2022 by ReMark

[mhupp]

You guys are not understanding. The viewport is @ the correct scale. With command SCALELISTEDIT you can pull up all your "named" viewport scales . it doesn't matter what scale it is you can give it any name you want.

 

You could have the name of 1/8"=1' set to "Bob's Wacky Scale". where it's blue

 

 

This would make

(vla-get-Standardscale (vlax-ename->vla-object v)) = Bob's Wacky Scale

(vla-get-customscale(vlax-ename->vla-object v)) = 0.0104167

 

if you type the command SCALELISTEDIT you are going to find a scale just named "24" that matches or is close to 1/8"=1'.  Rename it with a better name.

[nzoro99]

Quote

if you type the command SCALELISTEDIT you are going to find a scale just named "24" that matches or is close to 1/8"=1'.  Rename it with a better name.

I don't see scale named 24 in the list

 

 

[mhupp]

idk then please attach a sample drawing.

[nzoro99]

I can't share the original drawing.

I copy paste the viewport frame to layout 1

VP_test.dwg

[mhupp]

Must be something bugged with the export. Ran this on the viewport.

;;----------------------------------------------------------------------------;;
;; Dump all properties for selected objects               
(defun C:VDumpIt (/ SS)
  (if (setq SS (ssget))
    (foreach ent (vl-remove-if 'listp (mapcar 'cadr (ssnamex ss)))
      (vlax-Dump-Object (vlax-Ename->Vla-Object ent) t)
    )
  )
  (textscr)
  (princ)
)

 

;   CustomScale = 0.0104166666666667

;   StandardScale = 24
;   StandardScale2 = NIL

 

Look in Revit to see if their is a "named" scale of 24 there. or its the 24th viewport or its on the 24th tab.

 

Also used this lisp to double check the scale.

Model size X:3826.145 Y:2171.501

View port: X:39.856 Y:22.620

Ratio: 0.010416

 

When trying to change the text size of the dimensions i did notice.

input 5 it became 12.7

input 10 it became 25.4

50 to 127.00

 

 

Edited February 14, 2022 by mhupp

[SLW210]

I have moved your thread to the  AutoCAD 2D Drafting, Object Properties & Interface Forum. It doesn't seem to be a LISP problem.

[nzoro99]

Hello,

Doubled checked Revit file, no 24 found in properties or scales.

Could it be the fact that template was originally metric or not?

[mhupp]

I don't know. Tried changing the scale to see if that would do anything and something weird happened. this is the list off all my standard scales I have in BricsCAD. 

If you count down to from "custom" to 1/8"=1'-0" its 24th in the list. and StandardScale = 24. So i was like "huh that's weird". When I changed the viewport to 1:1 the  StandardScale = 2.  also 2nd in the list. Changed to 100:1 StandardScale = 13 and you guessed it 13th in the list.

 

  

 

Doesn't seem to be anything wrong with the view port. its just how (vla-get-Standardscale (vlax-ename->vla-object v)) displays as.