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| Menu: Trace > Auto Toolbar: Raster to Vector Description:
This method is used for tracing raster entities of the following types: line,
arc, outline and circle. See also: Tracing options and tuning See also: Quick Start "Tracing" See also: Tutorial "Tracing lines, arcs, circles and hatches"
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| Menu: Trace > Line Toolbar: Raster to Vector Description:
By specifying two points, draw a line covering the raster object to be traced. See also: Tracing options and tuning See also: Quick Start "Tracing"
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| Menu: Trace > Arc Toolbar: Raster to Vector Description: Specify the start, middle and end points of an arc lying over the raster object to be traced. If the program cannot recognize an arc, it beeps. See also: Tracing options and tuning See
also: Quick Start "Tracing"
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| Menu: Trace > Circle Toolbar: Raster to Vector Description: Specify two points - the opposite sides of a raster circle to be traced. If the program cannot recognize a circle, it beeps See also: Tracing options and tuning See also: Quick Start "Tracing" See also: Tutorial "Tracing lines, arcs, circles and hatches"
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| Menu: Trace > Hatch Toolbar: Raster to Vector Description:
This type of tracing enables you to trace a raster hatch consisting of straight
raster lines with the same angle, enclosed in a raster outline.
This figure illustrates the original polyline hatch, crossed by fence drawn with the mouse (left part) and the result of tracing (right one). See also: Tracing options and tuning See also: Quick Start "Tracing" See also: Tutorial "Tracing lines, arcs, circles and hatches"
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| Menu: Trace > LineFollowing Toolbar: Raster to Vector Description: This method allows you to trace arbitrary raster lines with an approximating vector polyline. When tracing polylines you can use several options; you can find them in the cursor menu. Tracing options are tuned in Conversion Options dialog. See also: Tracing options and tuning, Conversion Options > Trace Tab See also: Quick Start "Tracing" See also: Tutorial "Tracing raster polylines and outlines"
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| Menu: Trace > Outline Toolbar: Raster to Vector Description: This type of tracing creates an outline polygon with black line and cross-hatched fill around the specified contiguous area.
The resulting outline is influenced by Export single contour option setting. (See Tracing options and tuning) See also: Quick Start "Tracing" See also: Tutorial "Tracing raster polylines and outlines"
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| Menu: Trace > Symbol Description: The Symbol method of tracing allows you to trace by picking raster objects similar to previously defined samples. Symbol recognition can be only used on monochrome images. See also: Tracing options and tuning, Convert > Train Symbol, Convert > Conversion Options > Symbols Tab See also: Quick Start "Working with raster symbols" See also: Tutorial "Tracing raster symbols"
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| Vector (keep raster) Menu: Trace > Vector (keep raster), Trace > Vector (erase raster), Trace > Erase raster, Trace > Smooth raster Description: Commands to set a tracing mode that defines an operation made on the original raster object and the produced vector object. The Create vector and keep raster mode creates vector objects and does not delete the original raster. This mode is used by default
See also: Tracing options and tuning See also: Quick Start "Tracing" Tutorial "Tracing lines, arcs, circles and hatches"
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| Menu: Convert > Conversion Options Description: All tracing options are tuned in OPTIONS, TRACE and SEPARATE tabs of Conversion Options dialog box. OPTIONS TAB . Tracing is influenced by the following
options: Min Length - this parameter defines the minimum size of a raster object
that can be recognized. Max Width - this parameter defines the maximum width of raster lines that can be approximated by lines, arcs, circles, and polylines. If the width of a raster line exceeds Max Width, the only possible mode is Auto tracing and approximating with an outline object. Max Break - sets the length of the maximum ignored breaking raster lines. If a raster line is broken into parts and you want to trace this line as an entire object, the value of Max break should be greater, the largest gap between the raster line parts. The program will ignore the breaks and create single vector object, approximating the whole raster line. Approximation Accuracy - this parameter determines the accuracy of approximating of the original raster object with a vector one. Orthogonalization - if this option is on, the tracing in Auto and Line modes aligns created segments either perpendicular to or parallel with the base direction if the deviation of the original object from these directions is insignificant. The base direction is set in Base angle. The accepted deviation is determined automatically by the Approximation Accuracy parameter value. Base angle - angle that specifies the base direction of orthogonalization.
TRACE TAB represents parameters
controlling the procedure of tracing polylines: Line Follow Orthogonalization - if this option is on, the line following tracing automatically aligns segments of created polylines perpendicular to each other. Segments become either perpendicular or parallel with the base angle, if they are do not skew much from these directions. Auto estimate base angle - sets the mode which automatically defines the base direction of polyline segments orthogonalization. The base angle for each traced polyline is defined separately. Base Angle - angle that specifies the base direction of orthogonalization. Auto Detect Direction - sets the mechanism by which the program will automatically define the direction of tracing. Pause - sets a period in seconds, during which you should choose a segment to extent tracing when the Auto Detect Direction mode of tracing is on. Unless the user manually specifies another extension during this time interval, the program will continue tracing in the automatically selected direction. Setting Pause to 0 disables this option. Place vertex on nodes - if this checkbox is on, when tracing polylines the program inserts vertices at intersections of a generated vector polyline with raster objects (nodes). Auto Extend vectors - simplifies forced selection and tracing of arcs and lines.While recognizing a line you can click two arbitrary points on it; and WiseImage automatically extends the resulting line to its endpoints.While recognizing an arc you can click three arbitrary points on it; and WiseImage automatically extends the resulting arc to its endpoints. Export single contour - tunes the performance of outline tracing. If the checkmark is on, tracing creates the outer contour of the object. If the checkmark is off, tracing yields the outer contour and the inner one, if there are "holes" in the raster object.
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SEPARATE TAB you can control the properties of created vector objects: calibrate
the widths of obtained vector objects, place vector objects corresponding to raster
lines from the specified ranges of width on new layers and/or assign various colors
to created objects The figure represents descriptions of four intervals of widths that are used for automatic separating of traced lines. See also: Quick Start "Tracing"
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