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AutoCAD Tips & Tricks - Plotting

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1 AutoCAD Tips & Tricks - Plotting on Thu Apr 08, 2010 4:56 pm

Quick & Easy Plot to Raster

While the highest quality result is by defining a raster plotter (below), it's easy to create a raster using the BMPOUT, TIFOUT, or PNGOUT (our favorite) commands.

Plotting to a raster file

A popular inquiry from AutoCAD users is how to plot a drawing to a raster file (or bitmap/picture). This is often in response to the need to provide a 'picture' of the drawing without actually providing the DWG, or perhaps a drawing is to be displayed in a web page.

First is the simple to use (but less control) command called BMPOUT. It creates a Windows Bitmap .BMP file, appropriate for Paintbrush but not ready for a web page. It captures the whole drawing viewport so center your drawing as well as possible before issuing the command. The following procedures can be used to 'plot' your drawing to a raster file.

Setup:

1. Choose File > Plotter Manager.
2. Choose 'Add-A-Plotter Wizard'.
3. Choose Next, then Next again (accepting My Computer).
4. Under Manufacturers, choose 'Raster File Formats'.
5. Under Models, choose 'Portable Network Graphics PNG'. (details on why below)
6. Choose Next until the Finish button becomes available.

Usage:

1. Issue the Plot Command.
2. On the Plot Device Tab, choose the PNG output created.
3. Choose the Properties button, and choose the output resolution desired.
4. In the lower right corner, specify the path and filename to create.
5. Switch to Plot Settings tab, specify the window and complete the plot to file.

You may wonder why the PNG file was chosen. It is a clean highly compressed format. In comparison, the JPG (JPEG) format is absolutely NOT a desireable format for representing linework in raster format. While JPEG is fine for photographs, it is a 'lossy' compression and will produce noticable 'snow' on line drawings, expecially diagonal lines.

The PNG file is your best choice for raster output. It is very compact in size and is a 'loseless' compression. It can be displayed by all 'current' web browsers as well.

Plotting Multiple Sheets

Some may not know that in newer versions of AutoCAD which support the new layouts that you can select multiple layouts to plot. At the command prompt, simply hold down the control key and click on each layout you want to plot, or use shift to select a range. Once you've got the desired layouts selected you issue the plot command.

Auto Publish (2008+)

Newer versions of AutoCAD contain the capability to automatically create a DWF or PDF (added in 2010) file when you save or close your drawing. To setup the system go to the OPTIONS dialog, then choose the |Plot and Publish| tab. In the lower left you can turn the system on/off and control the settings.

The settings dialog allows you to designate when the publish is to take place, where the files go, etc. Various options exist in 2010 for things like layer information, merge control, and more.

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