Autodesk 05726-091452-9060 User Guide - Page 173
The example shows an isoline on
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WiseImage - User's Guide After you have indicated one or several points, setting the initial tracing parameters, the following prompt appears in the command line: [Direction/Backstep/backSegment/drawLine/pan2Center/Redraw/exit/caNcel]: 3. To trace the next part of the raster line in the current direction, indicate a point on it. WiseImage traces a raster line up to the nearest node. - or To change the tracing direction, select the Direction option from the cursor menu, enter a capitalized letter of the option name in the command line or indicate any point on the traced polyline near the opposite vertex. - or To create one linear polyline segment manually (without tracing), select the drawLine option. Then indicate a point. The line section will link the indicated point with the last trace point. This option allows you to eliminate breaks of a raster line, by drawing a straight segment of the polyline. The example shows an isoline on a raster map broken with text. If you specify the raster line extension without using the drawLine option, then one linear polyline segment will fill the gap. 178