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I know MapSource cannot display multiple maps at once.  I don't think BaseCamp can either?  The GPSr can, is there any other way to see how a transparent map will overlay over other maps (like it does on the GPSr)?

I'm making trail-maps, but don't need to waste time on certain things when other maps (California-topo) already cover dirt roads and some trails I might hike and add to my map?

I have quickly traced things off of maps in MapSource, then viewed these Routes/Tracks over my in-progress map, but this doesn't save much time.

Thanks
Aaron

I have noticed that some icons in GPSMapEdit display correctly (navigation ones, parking) in MapSource, and some don't (trailhead).  Even though MapSource HAS a trailhead icon...

I saw online there was a TestFile that used to be available that showed all the icons.  I cannot find it anymore.  I may make one of my own, but would rather not.  Does anybody know of one?

Any insight why something like Trailhead wouldn't transfer over the MapSource even though there is an icon for it?

Thanks
Aaron

Thank you to all who helped me get the complex series of steps that is Garmin-Map-Making working on my Mac/PC.  I have graduated from the Map Making Support Forum to this General Discussion one.

I have taken maps of local parks and visually aligned them in Google Earth.  I traced the trails as tracks/waypoints and generated Garmin-maps for immediate use.  I have then tracked and waypointed some parts with my GPSr.  I then use 3 waypoints to re-calibrate the park map.

The first map I did, my initial 'Rough' version was generally within 30ft - surprisingly good.  I have done a second one, but haven't tracked/waypointed it yet with the GPSr.  I'm wondering what the best way is to merge/update/refine these trails, ultimately to have them added to the My Trails maps?

I have an eTrex HCx, and even with the most frequent track point setting, the tracks are somewhat jagged.  Also, I'd like to avoid retracing the trails on the corrected map if possible.  I haven't tried GPS Trackmaker yet.

Some Specific Questions:
When I'm tracing in Google Earth, I often can see the trail in the Google imagery.  How accurate is this?  Obviously I'm aligning the map to it, so adjusting my trail from what the map says to match Google Earth is probably good, right?  Is the final geoTIFF significantly more accurate?

How accurate are my GPSr-tracks vs Google Earth?  They are close to both the aerial imagery, and my original rough-tracks (immediate use map).  I know the GPSr is +/- 30ft or so.

How should I take this data and improve its accuracy for a distributed map like My Trails:
Original traced trails (immediate use map)
Google Earth imagery
GPSr tracks & waypoints (sometime multiple)
GPSr-waypoint calibrated raster maps

What is considered the best way of refining GPS maps?

Thanks
Aaron

I have followed every tutorial multiple times, and finally need help.  The problem is, I get just a off-tone rectangle where the map should be in MapSource, with the www.cgpsmapper.com watermark and nothing, at any zoom.  ONCE, I got my trails to show up fine.

Here is generally what I've tried:
Garmin eTrex HCx & Google Earth > Tracks as kml
Imported into OzyExplorer and/or MapEdit with other map overlays
Saved as MAP file, exported as Garmin IMG
GPS Map Tool Kit to generate remaining files and install in MapSource

I export tracks & waypoints from Ozy
I convert tracks/waypoints to polylines/points
I delete original 'type 0' objects
I draw fresh polylines and polygons
I've tried ALL zooms/detail settings.

With MapEdit, opening the ISO file, the maps looks ok.  In MapSource, it has no data at any zoom or detail level.  So I suspect the issue is with GPS Map Toolkit and its use of cGPSmapper to generate the 'additional files'.  But once, after I though I figured out a problem I had with Levels/Types, I got a fully working map with all lines/points, with www.cgsmapper.com along the borders.  I now understand Levels fine, and can't figure out what I did differently.

Occasionally, I get a waypoint name instead of the www.cgpsmapper.com as the only data on the map or some weird/broken versions of the cgpsmapper watermark along the borders, but mostly its a point in the very middle.

Please help, I can upload sample files or describe what settings/process I do.

Thanks
Aaron