[mkgmap-dev] Problem Displaying Polygons with Extended Type codes

Tue Jun 28 22:57:46 BST 2011

I have recently noticed that polygons assigned codes of the type 0x101xx 
are not displayed on my Garmin 62s.  However, if I open the compiled 
maps in a package such as GPSMapEdit I can see that the features are 
indeed compiled correctly in the maps.

I am using version r1973
The polygons are correctly defined in a TYP file
If I redefine the polygons to alternative unused codes of type 0x2x or 
0x3x and also change the code in the TYP file then the polygons are 
displayed correctly.

It does not seem to matter what the Drawing Level is in the TYP file.  
Non of the 0x101xx types are ever displayed.

In the case of Polylines, I have used several codes of the types 
0x100xx, 0x101xx and 0x105xx and they are displayed correctly.

I am really puzzled by this and would really appreciate any insight into 
what is happening.

At the lower drawing levels in the TYP file I have the following defined:

Type *0x4b* [*Background (coverage)*], Drawing order: *1

*Type *0x32* [*Sea*], Drawing order: *2 (Placeholder only)

*Type *0x27* [*?*], Drawing order: *3 **(Placeholder only)

*Then follows Drawing Level 4 with codes 0x02, 0x03 etc.

Any ideas on this please?.
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