Does anyone know of method to convert these vector formatted files for use on Garmin devices? I know there is a method for raster format, however the ECN vector seems like a better format to start from as more information will be retained.
What was the exact procedure you followed? I used ogr2ogr fine to get the shp files (ESRI), however it's my understanding cgpsmapper (at least the version I have) only supports .mp file for conversion (Polish Map).
Use GPSMapEdit (use Import to load shapefiles) to build the map. Then use Export (this will use cGPSmapper) to convert to a .img file.
ECNs will open in GlobalMapper and then you can extract vector line, points and polygons to be saved to shp or mp and go on from there to GPSmapedit, cGPSmapper way to compile your Garmin .img. Its doable. Essentially you need to be familiar with gis map making process.
Thanks, I just wish there was an easier more automated method to do this. Oh well, hopefully Open Seamap will add the support.
I exported a Polish MP format and tried with MapTk. It encounters errors.
Warning: unsupported polyline type=0x301 '0'
at (41.62927,-70.24407) is ignored !