Autodesk 00126-050008-1640A User Guide - Page 184

12 Tracing Separate Tab Parameter Description Use table If this checkbox is off, then the program assigns to objects the specified values of AutoCAD color and layer properties, the weight of objects' lines is set according to the widths of the appropriate raster lines. New interval Allows you to create and delete width intervals in the table. Width table Allows you to edit objects width intervals, to assign color, layer, and weight of the line to an interval. Width table To tune the width table correctly, you need to define width interval boundaries so that the objects obtained after vectorization of raster lines with the same width fit in the same width interval. The width table can contain any number of width intervals. Each interval is defined by two values - a lower and high width boundary which recognized objects must fall into get into the specified interval. Width, color and layer are defined to each interval, and these properties are assigned to the objects that fall into each interval according to its width. Real raster lines widths vary around their true value. For example, if you vectorize raster lines with a width of 0.25 mm, you can obtain objects with widths from 0.18 to 0.33 mm, and lines with width of 0.5 mm turning into vector objects with width from 0.35 up to 0.7 mm. 189