2004

642 | Chapter 22 Plot Drawings
Use Dithering
A plotter uses dithering to approximate colors with dot patterns, giving the
impression of plotting with more colors than the ink colors available in the
plotter. If the plotter does not support dithering, the dithering setting is
ignored.
The most common reason for turning off dithering is to avoid false line
typing from dithering of thin vectors and to make dim colors more visible.
When you turn off dithering, AutoCAD maps colors to the nearest color,
which limits the range of colors used for plotting. Dithering is available
whether you use the object’s color or assign a plot style color.
Note Dithering disables merge control.
Convert to Grayscale
When you select Convert to Grayscale, AutoCAD converts the object’s colors
to grayscale if the plotter supports grayscale. Light colors, such as yellow, plot
with light gray values. Dark colors plot with dark gray values. If you clear
Convert to Grayscale, AutoCAD uses the RGB values for object’s colors. Con-
version to grayscale is available whether you use the object’s color or assign
a plot style color.
To assign a plot style color
1 On the File menu, click Plot Style Manager.
2 Right-click a CTB or STB file and click Open on the shortcut menu.
3 In the Plot Style Table Editor, Table View tab, click the Color field for the
plot style you want to change.
4 On the Color drop-down list, click the color you want to use or click Select
Color to display the Select Color dialog box and do one of the following:
■ On the Index tab, click a color or enter the ACI color number (1-255)
or name in the Color box. Click OK.
■ On the True Color tab, in the Color Model box, specify a color (enter a
color value in the Color box or specify values in the Hue, Saturation,
and Luminance boxes. Click OK.
■ On the Color Books tab, in the Color Book box, select a color (use the
up and down arrow and click on a color chip. Click OK.
Command line
STYLESMANAGER