Autotek autocad raster design 2010 用户手册

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General Vector Separation Options
These settings are used in vectorization to specify vector line widths, layer
assignments, and the handling of non-continuous lines.
You can use the Width Table to automatically assign layer and polyline width
values to the vectors based on the width of the original raster. In this table,
you specify how to handle lines of particular width ranges. Lines of a different
width are assigned the default values for layer and polyline width. You can
also specify default values for non-continuous entities, such as dashed lines,
that override the values specified in the width table.
NOTE Vector Separation settings are not saved with the drawing. You can maintain
the current settings by using the Save As Default button, or by exporting the
settings to a separate file.
To change the General Vector Separation Options
Click Image menu  ➤  Options. The 
dialog box is displayed.
Click the VTools General tab.
Click the Vector Separation button.
Click the 
 (page 373) tab.
If you want to assign layer and polyline width values to vectors based on
the width of the underlying raster, then in the Width Table section, select
Use Width Table.
To insert a new row in the Width Table, click Insert Below or Insert Above,
then enter values for the minimum width (in pixels), maximum width
(in pixels), layer, and polyline width.
TIP If you don't know the width of a given raster entity, click the Query Width
button, then click the raster entity. The Entity Width Information dialog box
appears and displays the raster entity's width in pixels and in AutoCAD units.
If you want to use one of these values, you can use standard Windows
techniques for copying and pasting information from the clipboard. Click OK
to return to the Vector Separation dialog box.
If you want to assign different values to dashed lines and other
non-continuous entities, then in the Non-Continuous Entities section,
select Override Width Table for Non-Continuous Entities. Select default
Layer and Polyline Width for these entities.
General Vector Separation Options | 249