[R-sig-Geo] Converting CorelDraw files in to shape files – Grokbase

CorelDraw is a proprietary, closed source general vector graphics package. You may have some maps in the files, but there's no guarantee the polygons are closed, or anything. They could be lots of line segments in the wrong order. Or made up of triangles. Different files could store the data differently. The coordinate system might not be lat-long or anything else (its probably inches on the document, not useful when your map is of France). Best you could hope for would be to post some where we Thanks for the advice Barry but I think its quite a lot of work and there might be some problems in converting SVG files to shape file format as SVG is a drawing format and may not really represent the real world situation. Ravi. -----Message d'origine----- De?: b.rowlingson at gmail.com [mailto:b.rowlingson at gmail.com] De la part de Barry Rowlingson Envoy??: mardi 30 juillet 2013 15:43 ??: Ravichandra MONDRETI Cc?: r-sig-geo at r-project.org Objet?: Re: [R-sig-Geo] Converting CorelDraw files Thanks for the advice Barry but I think its quite a lot of work and there might be some problems in converting SVG files to shape file format as SVG is a drawing format and may not really represent the real world situation. CorelDraw is a proprietary, closed source general vector graphics package. You may have some maps in the files, but there's no guarantee the polygons are closed, or anything. They could be lots of line segments in the wrong order. Or made up of triangles. Different files could store the data differently. The coordinate system might not be lat-long or anything else (its probably inches on the document, not useful when your map is of France). Best you could hope for would be to post some where we can get them and hope someone can reverse-engineer them, or convert them to something more malleable. Inkscape (open source vector graphics editor) says it can Import Corel Draw files, so you might be able to input them, check the geometry, save as SVG, convert to shapes somehow, Well this is exactly what Barry was talking about. The CorelDraw files have already started the problem, when you ask about extracting 'the shapefiles' from them. There aren't any 'shapefiles' in there, but presumably there is geometry of some kind, which may or may not match the underlying model used by actual shapefiles. How did you get your geometry into those files and what options does the program provide you for using them elsewhere? It's usually a good lead to search for '[my thing] Thanks for the advice Barry but I think its quite a lot of work and there might be some problems in converting SVG files to shape file format as SVG is a drawing format and may not really represent the real world situation. CorelDraw is a proprietary, closed source general vector graphics package. You may have some maps in the files, but there's no guarantee the polygons are closed, or anything. They could be lots of line segments in the wrong order. Or made up of triangles. Different files could store the data differently. The coordinate system might not be lat-long or anything else (its probably inches on the document, not useful when your map is of France). Best you could hope for would be to post some where we can get them and hope someone can reverse-engineer them, or convert them to something more malleable. Inkscape (open source vector graphics editor) says it can Import Corel Draw files, so you might be able to input them, check the geometry, save as SVG, convert to shapes somehow, Source.


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Last Modified: August 27, 2013 @ 12:00 am