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Agenda. Working with raster dataCapabilitiesPrior to ConversionDrawing LinesShortcut KeysAuto ConversionConverting TextWorking with NodesQuestions
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1. Raster to Vector Conversion with Descartes 2004 Kevin van Haaren
HNTB Corporation
kvanhaaren@hntb.com
2. Agenda Working with raster data
Capabilities
Prior to Conversion
Drawing Lines
Shortcut Keys
Auto Conversion
Converting Text
Working with Nodes
Questions & Answers
3. Working with Raster Data Attach image, draw on top
Easy
Least flexible (hard to screen back rasters)
Attach image, edit image, draw on top
Poor CADD tools
Attach image, convert to vectors, detach image
Can be time consuming
Accuracy issues with all methods
4. Capabilities Not a magic one button solution
Still involves lots of manual work
Provides tools to help technician to redraw raster images
Hand drawn images harder to work with than scanned computer drawn images
5. Before Converting Raster Cleanup
Despeckle image
Erase unneeded parts
Crop borders
Locate Tolerance Configuration
Set locate tolerance to size that doesnt cause two or more lines to be selected
6. Drawing Lines Turn on Raster Snap
Turn off Auto Convert
Leave Erase Raster off
7. Shortcut Keys While in vectorize tools you can use:
F2 Undo Data Points
F3 Redo Data Points
F5 Center view on cursor
F6 Center view on last entered point
F8 Spy Window
8. Auto Conversion Decartes Place Element
Turn on Auto Convert
Gap Jumping (if desired)
Poorly drawn lines
Dotted Lines
Only in direction specified
Convert Lines
All directions
Auto-continue
Reset continues on end nodes
9. Convert Text Raster Manager Dialog
Text/Cells
Multiple Text
Area: Block
Turn on Convert Now
Set Orientation to Horizontal
Use rulers to set Min/Max text heights
Define Block
Make Corrections
Special Preferences