More recent models (like the Colorado/Oregon/Dakota series) allow for a larger color range, but if you’re designing custom symbols for use on all color Garmin units, you might want to stick with the more limited palette to insure that they’ll look the same on all the Garmin models. GarminColor (in French free forum registration required to download it): Older Garmin handheld GPS units (like the GPSMap and eTrex models) allow for only 254 colors, 16 gray levels + 238 assorted colors. The distribution also includes sample TYP code in the program directory (like the example above). The documentation includes a short section on how to create and compile type descriptions in text format into a TYP file, and how to incorporate these new symbols in your map code. Fortunately, there are a number of free tools that can simplify the process.Ĭgpsmapper: AFAIK, this is the only program that fully supports all TYP file features, and you should have at least the free version installed on your system. This is just two color, and simple symbols if you wanted to make an elaborate, multi-colored fill pattern or point symbol, it could take a long time to create it. Here’s sample code for a fill pattern (from a sample file in the cgpsmapper distribution): But designing and coding custom TYP symbology in standard cgpsmapper text format can be a major pain you have to assign colors to ASCII symbols, then manually type out the color code symbols to generate the image a la ASCII art (XPM format). This capability gives you enormous flexibility in creating your own thematic Garmin vector maps. Here’s an example from the cgpsmapper manual of a map that uses standard Garmin symbology (on the left), and custom symbology (on the right): You then you associate that TYP files with the maps that use your custom symbology. You define these in a special file called a TYP file, created either directly or by using the cgpsmapper compiler to convert a text code fileinto a special TYP file. One of the most useful capabilities in custom Garmin vector maps is the ability to create your own designs for point icons, lines and polygon fill patterns, and use them in addition to (or as substitutes for) Garmin’s standard symbology sets.
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