Displaying Lineweights


Lineweights are displayed differently in model space than in a paper space layout. In model space, lineweights are displayed in relation to pixels. In a paper space layout, lineweights display in the exact plotting width. Lineweights should be used for the graphic representation of different objects and types of information, and are, therefore, displayed in model space in proportional pixel values. You can recognize that an object has a thick or thin lineweight in model space but the lineweight does not represent an object’s real-world width. A lineweight of 0 will always be displayed on screen with the minimum display width of one pixel. All other lineweights are displayed using a pixel width in proportion to its real-world unit value.

In model space, lines displaying lineweights that are joined (two consecutive lines) form a beveled joint with no end caps. A beveled joint merges the two lines at a slant to fit them together. End caps are styles that can be applied to the endpoints of lines like round caps or butt caps. You can use plot styles to apply different joins and end cap styles to objects with lineweights. See “Editing Plot Styles.”
NOTE Use REGEN or REGENALL to display the joins of objects with lineweight correctly.

Lineweight display in model space does not change with the zoom factor. For example, a lineweight value that is represented by a width of four pixels is always displayed using four pixels regardless of how far you zoom into your drawing.

You can set the display scale of lineweights if you want the lineweights on objects to appear thicker or thinner in the Model tab. Changing the display scale does not affect the lineweight plotting value. However, AutoCAD regeneration time increases with lineweights that are represented by more than one pixel. If the display scale is not adjusted, all lineweight values that are less than or equal to 0.01 in. or 0.25 mm are displayed at one pixel and do not slow down performance in AutoCAD. If the lineweight display scale is adjusted, the values represented by one pixel change. If you want to optimize AutoCAD performance when working in the Model tab, set the lineweight display scale to the minimum value or turn off lineweight display altogether.

To set the display scale of lineweights in the Model tab

  1. From the Format menu, choose Lineweight.
  2. In the Lineweight Settings dialog box, under Adjust Display Scale, move the slider to change the scale.
  3. If you move the slider to the right, lineweights are displayed at a larger scale in the Model tab. If you move the slider to the left, lineweights are displayed at a smaller scale in the Model tab. The Lineweight list displays the lineweights at the current display scale.

  4. Choose OK.

Shortcut menu Right-click Lwt on the status bar and choose Settings.
In layouts and plot preview, lineweights are displayed in real-world units, exactly as they are plotted, and lineweight display changes with the zoom factor. On the Plot Settings tab in the Plot dialog box, you can control lineweight plotting in your drawing.

In model space, you can turn lineweights on or off by

Toggling Lwt on the status bar
Selecting or clearing Display Lineweight in the Lineweight Settings dialog box
Setting the LWDISPLAY system variable to 0 or 1 to turn lineweight display off or on

In layouts in paper space, you can turn the display of lineweights on or off by toggling Lwt on the status bar. This setting does not affect whether lineweights are plotted or not plotted in a drawing. See “To create a layout to plot.”



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