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Topics - leszekp

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Just found out that the free Android GPS app OruxMaps supports .img files:


Combine all the map tiles you want into a single .img file, then copy it into the mapfiles folder and select it as an offline map. Rendering isn't outstanding, but it does work.

Map Making Support / GUI for mkgmap compiler
« on: July 29, 2010, 08:51:07 AM »
Just posted on the latest version of my free GUI for the mkgmap compiler. Now supports .mp files, input of a map ID number, and a few other options.


Map Making Support / Moagu 2.0 beta released
« on: July 21, 2010, 03:54:29 PM »
For those of you who've bought/registered my Moagu program to convert raster maps into Garmin format, the beta of version 2.0 is out, and I'm looking for feedback:


You also need to have the free version of cgpsmapper installed on your computer:


If you haven't registered it, the new beta increases the spatial extents available in demo mode, making it more useful if you only need small map segments (about 1.5 miles x 1.5 miles or so); it's free in demo mode.

Biggest changes:

- mkgmap is now the default compiler; it compiles maps about 30 times faster than the current free version of cgpsmapper, and 150 times faster than older versions.

- Includes a de-collaring utility for standard USGS 1:24K topo maps (NAD27 GeoTiffs only)

- I've optimized the GUI front-end to the BMap2MP vectorizer utility to create decent-looking USGS topo maps with much faster draw times than standard Moagu maps (2-3 times faster). A new tutorial section in the help file walks you through the process of creating these. These are now fast enough to work OK on the older 60C/76C models. I've created an installer with a sample USGS map that you can try out:


This has both the installer and a GPX waypoint located within the map (to simplify finding the map location).

I don't have my 62S yet, so I haven't been able to test out this BMap2MP topo map on the newer Garmin OS that runs on Colorado/Oregon/Dakota/62/78 series; they should work, but I'm not sure. If someone could try it out on one of those models and let me know if it works, that would be great!

Longer list of improvements here:


Been plugging away the last week, and now have the first version ready of G-Raster, a program that will load georeferenced imagery, tile it automatically, and create a Garmin-compatible KMZ file.

Don't install KMZ files created with G-Raster into your Garmin's internal memory - put them into an external memory card in an external reader. Just a precaution for use with the Garmin beta software, and version 1.0 of G-Raster. That way, if there's a problem with the overlay, you can always just remove the card from the GPS unit.

Download link to most recent version can be found on this page:


Interface is fairly straightforward:

1. Open your graphic file; supported formats are:

a. Files with embedded geodata (GeoTiff, NOAA BSB, MRSID, IMG)
b. USAPhotoMaps Big JPEG files (UTM, you'll need the UTM zone)
c. Generic graphic files with UTM worldfiles (you'll need UTM zone, and specify datum and hemisphere)
d. Generic graphic files with worldfile in any coordinate system (you'll need to specify the EPSG code)

2. Process the raster graphic file

3. Set basic options (overlay name, JPG compression, transparency in Google Earth). You can also rescale the image by a factor >= 1.0 to reduce its size (reduces resolution, but also reduces the number of tiles).

4. Create the overlay.

You should definitely check it in Google Earth to make sure it's in the right position; just remember that Google Earth imagery can be off from 0 to 100m depending on where you are. If it looks good, put it in the \Garmin\Custom Maps directory on the external data card and test it out.


- Maximum file pixel size is 100 million; larger than that, and you have the option of cropping it down to a smaller size

- Tile size is set to be the largest compatible with the image dimensions and a max tilesize of 1024 pixels.

Mostly functional for free (though I do ask for a small registration fee if you find it useful)

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