Extend AutoCAD entity data 1 Apr, 2001 By: It was a dark and stormy night. Captain LearnCurve's acute hearing picked up an anguished cry: Oh, woe is me!

I have many pages of data that must match up to objects in my drawing! It takes forever to find the data for a given object! Whatever shall I do? Have you ever wanted to add some extra background information into an AutoCAD drawing?

Turning path tracker (AutoLISP application) is an application that draws vehicle paths for site and road design. Classic editor History Talk (136). The third part;;; prompts for rotation (first to align with your baseline then flips it 180. Which is made into a block.;;;;;; You can change the attributes in the block if you make. Dec 17, 2018 - How Social Engineering (and acad.fas) Steals IP from AutoCAD. 'who could not disguise the terror in his voice,' offering to start negotiating again. Plot Scale, Rotation and Origin selections now accessible via a dialog box. Attribute Define command enhanced with new AutoLISP routine and dialog.

There are four basic ways to do this. The quickest and easiest way is to put notes on a separate Post-it layer. When you want to plot the drawing, simply freeze the layer so your notes don't plot. You can also put the notes on the Def-points layer because it never plots and cannot be made to do so. Starting with AutoCAD 2000, you can use the Layer dialog box to specify that a layer does not plot even though it is still visible and not frozen.

The bad news is that others can view and edit your notes. The notes also can't be associated with a specific object in the drawing. The second way to add information to a drawing neatly overcomes these problems. You can use attributes attached to block definitions to associate your data with each insertion.

The attribute definition can be visible or invisible under normal circumstances. You can use the Attdisp command to turn all attributes on or off, or make them revert to their normal mode as defined.The bad news is that you can attach attributes only to blocks and not to other object types. They are also visible and editable, or can easily be made so, to other users. Link to a database file The third way is probably the most powerful and versatile. You can establish a link between objects in an AutoCAD drawing and records in a database file. This link works both ways, so you can select an AutoCAD object and retrieve the database information, or you can do database searches and then find the matching AutoCAD objects. A drawing can reference more than one database file, and many drawings can reference the same file.

Other users, such as the accounting and purchasing departments, can continue to use and maintain the database information. The bad news is that database links can be a little complex and difficult to set up, and the database files must be made available if you move or copy the drawing file. Vcds wiki. Extended entity data We now come to the fourth method.

This is based on the fact that with a bit of AutoLISP programming you can add up to 16KB of your data to any AutoCAD object, including lines, circles, arcs, and blocks. You can even add data to layer definitions and text or dimension styles. This is known as extended entity data, and it is your data. AutoCAD studiously ignores it, and only a suitable AutoLISP program can view or edit it. Yes, you need to do some AutoLISP programming, or know someone who does. You can also use VBA, but this column focuses on AutoLISP.