Today is...
Friday, December 14, 2018
Welcome to Control.com, the global online
community of automation professionals.
Featured Video...
Featured Video
A demonstration of EtherCAT control of linear motors using the CTC EtherCAT master.
Our Advertisers
Help keep our servers running...
Patronize our advertisers!
Visit our Post Archive
.DXF
My old DXF generator doesn't work any more.

I have a program that computes a set of points to generate an airfoil in accordance with NACA equations and can print a rib for a model airplane wing on an ordinary printer. It also generates a simple .DXF file that used to work in AutoCAD and other drawing programs, but the current versions of AutoCAD are not backward compatible and the files I generate are no longer readable with AutoCAD 2000 through 2004. The following error message is displayed:

Invalid or incomplete DXF input -- drawing discarded.

I can read my files in AutoCAD 14 and export them in a DXF format that is compatible, but that won't satisfy users' needs. A sample file is attached and simply has the form as shown below (The ellipsis represents the remaining data points with just the first and last included).

What is the minimum I must add to generate files compatible with the new versions of AutoCAD?

0

SECTION

2

ENTITIES

0

LINE

8

0

10

0

20

0

11

0

21

. . .

0

LINE

8

0

10

0.949508007812073

20

-4.85612389832622E-03

11

0.999916185907668

21

-1.25720928962784E-03

0

ZOOMALL

0

ENDSEC

0

EOF