Lesson 4. Raster, Vector and Hybrid
Selection
Brief
description: To perform operations
such as modifying an object’s properties, you first need to select data
to apply commands to. During this
lesson you will learn how to select raster, vector and hybrid data for
further editing.
 For detailed information on these subjects see Selections and
Working with raster symbols sections
of the Quick Start guide:
Information
When selecting data, you must define three selection
parameters: type of data to select, selection mode and selection
method. The selection tools are located on the Select and More
Select toolbars.
Type of data to select - raster, vector or hybrid.
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On the Select toolbar press the appropriate
button to select:
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Vector objects |
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Raster data (including raster objects and raster areas) |
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Vector objects and raster data |
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Area selection only |
Selection modes
You can add data to selection, remove from selection or use the single
selection.
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On the Select toolbar press the appropriate
button:
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To add data to selection |
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To remove data from selection |
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For single selection (every new selection deselects previously selected
data) |
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Use these buttons to: |
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Select all objects (dependant on type of data to select) |
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Deselect all selected data |
Selection Methods
| Raster Area |
Select inside window or polygon, select isolated raster objects by
picking. |
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| Raster objects |
Select raster lines, arcs, circles by picking,
by reference object, inside window (polygon), by crossing window (polygon),
by fence. |
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| Raster segments |
Select inside window (polygon), by crossing window (polygon),
by fence. |
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Segment - means a raster
line of arbitrary shape, limited by intersections with other raster
lines or endpoints. |
| Isolated raster fragments |
Select inside window (polygon), by crossing window (polygon),
by fence. |
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| Vector objects |
Select inside window (polygon), by crossing window (polygon),
by fence. |
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Raster Selection
Choose Open from the File
menu. Open the Selection.cws document from
the Lesson_4 folder.
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Select the raster circle by picking.
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Select raster lines by fence.
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Select raster objects by crossing window.
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Select raster objects inside window.
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Select texts inside window Floodfill
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Select raster segments by fence
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Raster Symbol Selection
| Raster symbols are recognized in accordance with patterns stored
in the special template libraries. A raster symbol can be rotated
relative to the corresponding pattern and have a different scale.
You can easily train WiseImage to recognize new symbols. Before selecting
raster symbols you need to select corresponding templates in the Symbols
tab of the R2V Conversion Options dialog. |
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During this exercise we’ll select raster symbols - denotations
of windows and stairs.
Choose Open from the File
menu. Open the Selection.cws document from
the Lesson_4 folder.
Zoom to the Floor image.
- Select the stair, using raster area selection inside window.
If you select a raster object incorrectly, remove
it from the selection.
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- Choose Train Symbol from the Convert menu.
- Press the Save button, save the symbol with a name, e.g. stairs.
Symbols are stored in the folder specified in the
Preferences dialog. You may create your own subfolder.
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- Select the window, using raster area selection inside window.
If you select a raster object incorrectly, remove it from the
selection.
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- Press the Create Symbol from selection
 button.
- Press the Save
button, save the symbol with a name, e.g. window.
- Close the Train Symbol dialog.
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- Choose Conversion Options from the Convert
menu.
- Open the Recognition tab in the R2V Conversion
Options dialog and select the Symbol checkbox.
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- Open the Symbol tab and select the window
and stairs symbols from your folder.
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Choose:
Strategy: Standard or Smart
Accuracy: Low (because the image - Floor
has poor quality)
Orientation: Horizontal and Vertical (because the
windows are located in both horizontal and vertical directions.
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