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Digitizing in ILWIS (opensource)

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Yalin

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May 14, 2008, 7:22:30 PM5/14/08
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Hello:

I have an image (TIFF) that created by taking a screenshot of a map. I
have georeferenced this image in ILWIS and now want to digitize areas of
this map. I can digitize using the segment operation using one of my
GeoTIFF's, but for this TIFF that I created it doesn't seem to work. I
have created a domain (Group type) for this and have followed all the
appropriate steps. Any suggestions on what the problem could be?

gasenngo

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Jun 14, 2008, 7:20:12 AM6/14/08
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Try to geo-reference your image using tie-point then perform a
transformation.

The result will be a geo-corrected image. I believe this is the right
type of image that can be used to digitizing in WLWIS.

The procedures in WLWIS is a bit more complicated than commercial
packages since it was design for learning: user have to do more but
will gain more understanding at the end.

Start with the help under the Digitizing section, then with the User-
guide here, as I remember it should have instruction and even step-by-
step tutorial on most of the Ilwis operation.

http://52north.org/index.php?option=com_content&task=view&id=149&Itemid=127

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