Here's the latest Gmap4 update.
Gmap4 can now read Google MyMaps and display that data on the USGS 7.5” topo maps.
Also the on-screen interface is cleaner and the Help file has been updated.
Here’s an example of a Google MyMap I made for a hike in the Washington State Cascades:
http://www.mappingsupport.com/p/gmap4.php?...f3d013cf15e19f5
Every time you make a MyMap there is a unique ‘id’ code assigned to that map. Gmap4 uses that ‘id’ code to display your MyMap. All you need to do is enter the following command into your browser. Replace the xxx.yyy with the ‘id’ code for your MyMap. Also, be careful not to let any spaces get into this command:
http://www.mappingsupport.com/p/gmap4.php?q=mymap,xxx.yyy
If you do not know the unique ‘id’ code for your MyMap then:
1. Display your MyMap
2. Click the “link” button in the upper right corner
3. Save the link and find where it says: &msid=
4. Copy your ‘id’ code. The ‘id’ code begins after the “&msid=”. If you are copying the ‘id’ code and get to a ‘&’ character, then copy everything up to (but not including) the ‘&’ character.
Finally, if you have a KML file then Google maps has a feature that lets you "import" that KML file into a MyMap. This is a very quick way to put a KML file online so you can view it on the detailed topographic maps that are available with Gmap4.