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| Can I use Didger to digitize contour lines? |
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Yes, you can use Didger to digitize contour lines. If you have a paper map, you can either digitize them using a digitizing tablet or you can scan the map and import it into Didger and digitize onscreen.
The first step is to calibrate the tablet (Digitize | Tablet Calibration) or image (Image | Calibrate Image in Didger 3, or register the image upon import in the Image Registration and Warping dialog in Didger 4).
After the paper map or image is calibrated, go to Digtize | Polyline. When you digitize the contours, enter the contour value as the Primary ID for the polyline.
Didger 4 also has the ability to automatically digitize lines from an image (Image | Vectorize Image), so you don't have to manually digitize the contours.
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