![]() If you are interested in seeing how the maps for your area have evolved over the years, you can use the same command to go back and download additional historical USGS quad maps for the area. ![]() To automatically download the topo map, click Automatically Add USGS Topo Map on the Map menu (under Scanned Maps), and select Los Angeles, 1994 edition, Los Angeles, CA, 1:24000. (You can zoom in on the approximate area, or use the Go to Coordinates command to recenter the map on 0, 0. ![]() If you haven't already, download ExpertGPS (it's a free download) and recenter the map on the area around Los Angeles. Downloading the 1994 Los Angeles, California Topo Map The topographical maps in ExpertGPS are fully-georeferenced, which means that your GPS waypoints and tracklogs (and any other KML, shapefile, DXF, or other data you have) can be instantly mapped right over the Los Angeles quad map. The actual Los Angeles topo map displayed in ExpertGPS is a high-resolution scan of the actual paper topo map produced by the US Geological Survey in 1994, including the full map collar with a locator map, scale bar, and projection information. ![]() The thumbnail displayed to the right is just a preview image. And it also has the ability to automatically download and display complete, high-resolution scans of every USGS topo map made in the last century, including this 1994 edition of the US Geological Survey DRG topo map for Los Angeles, California. I have not tried accessing the pictures to copy out to other programs, but I'll give it a go later.Preview of 1994 edition USGS topo map Los Angeles, CaliforniaĮxpertGPS mapping software includes seamless topo map coverage for the entire United States. This was something that was carried out by a company who were payed by the UK government and offered, free, to anyone applying for a copy. I've also obtained a free CD-ROM of aerial photographs of the UK. The one I have was sold through the Ordnance Survey, which is the official government mapping service in the UK. I bought mine, in a proper shop, for under £10 (about US$7) and I can copy from it into a variety of programs. There are a couple of fairly cheap map CD-ROMs available for the UK. I've never looked into buying maps outside of the US, but I understand they are much more expensive if they are available at all. The reason the maps and photos only cover the US is that the US is the only country that makes their maps and photos available online for free. Especially where you've bought the map in the first place, or get copies via Libraries etc. ![]() Although, there are relaxations now for private use. If I need to scan, that's no technical problem, but I'd suggest being careful of copyright. The 'use your own maps' feature would be interesting, would these be scanned maps or could they be taken off a CD-ROM such as those sold via the Ordnance Survey I wonder? I use a program, called UI-View, for APRS which allows you to import from the Ordnance Survey CD-ROMs. I have a CD-ROM, which was distributed free, of aerial photographs of the UK. I have to say that EasyGPS has been very useful to me already. Thanks for the information, I'll try the trial download and see what it can do. ExpertGPS comes with free upgrades, and one of the planned features we will be releasing later this year will let you use ExpertGPS with your own maps. The aerial photos and topos only cover the USA. ![]()
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