Effective Plotting Area Variances

[christopher.l.evans]

I had a print request come through for some older drawings that were drawn in model space.  I wrote a LISP to create PDFs with the dwg to pdf.pc3.  In the log Scriptpro generated I have three different effective plot areas, 33.79" x 22.00", 33.60" x 21.81" and 33.4" x 21.61".  Paper size, plot window and plot inches:drawing units all have the same value so I'm not sure what is causing these variances.  Probably something simple I'm overlooking but not something I would think has an effect to this.

[dmfrazier]

How are you establishing the plot window?

[christopher.l.evans]

Plot window cordinates.

(defun c:pdfold ()
 (command
  ".-PLOT"
  "Y" "Model" 
  "DWG TO PDF.PC3"
  "ANSI D (34.00 X 22.00 INCHES)"
  "I" "L" "N" "W" "-0.2,-0.2" "34.2,22.2" "1:1.018" "C" "Y"
  "d-elec.ctb"
  "Y" "A"
  (STRCAT (GETVAR "DWGPREFIX") (strcat (vl-filename-base   (getvar "dwgname")) " ") (GETVAR "CTAB") ".pdf")
  "N" "Y")
)

[dmfrazier · Accepted solution]

Question: Why set the plot window 0.2 units larger than your paper size?

Suggestion: Turn off osnaps by adding (COMMAND "SETVAR" "OSMODE" 0) before plot.

[christopher.l.evans]

To work around that variance, otherwise I had titleblocks cut off.  Needed to get the job out to the engineer by COB that day.  Now I'm curious as to what's going on that would cause that and it appears (SETVAR 'OSMODE 0) was the fix .  Thanks.