Hi I noticed a while ago that "test-map:all-elements" stopped working correctly. The map it generated showed a box around the map area, but within the map area, the device said 'no-map' and didn't show anything, however POI searches did work.
I tracked it down to a couple of lines added to mkgmap/build/MapBuilder.java : processInfo() if (!(src instanceof OverviewMapDataSource)) poiDisplayFlags |= TREHeader.POI_FLAG_DETAIL; poiDisplayFlags is byte 0x3f in TRE So: Old maps and old all-elements, with poiDisplayFlags = 0 worked. New maps, with poiDisplayFlags = POI_FLAG_DETAIL, work, but all -elements doesn't. One of differences between a typical map and all-elements is that all -elements doesn't output a standard background (polygon 0x4b covering the complete map area); changing it to do so, then all features get displayed. However, transparent maps don't have a standard background and they work. Trying option --transparent with the original version of all -elements makes it work. I don't know if this behaviour was known or expected, but I thought it worth-while to note it down in this post. I didn't want all-elements to have a standard background so I've added --transparent to the comment about how to invoke it, also a few other option suggestions. The other change I made was to show elements against a green background as well as no background, as I was having trouble spotting many line -types that my new device shows as white. I've attached a patch for this. Regards Ticker
Index: src/uk/me/parabola/mkgmap/reader/test/AllElements.java =================================================================== --- src/uk/me/parabola/mkgmap/reader/test/AllElements.java (revision 4283) +++ src/uk/me/parabola/mkgmap/reader/test/AllElements.java (working copy) @@ -39,9 +39,10 @@ * variables BASE_LAT and BASE_LONG set to something just SW of where you * are then the map generated will be located near where you are. Otherwise * the default location is at (51.7, 0.24). + * Options --x-base-lat and --x-base-lon have the same effect. * * To run, something like: - * java -jar mkgmap.jar --gmapsupp test-map:all-elements ... + * java -jar mkgmap/mkgmap.jar --order-by-decreasing-area --transparent --gmapsupp test-map:all-elements mkgmap/examples/typ-files/sameOrder.txt * * You can then use the find facility of your GPS to * show the near-by points. When viewing a category the menu key will allow @@ -103,7 +104,7 @@ private void drawBackground(MapCollector mapper, double startLat, double startLong, int nUp, int nAcross) { MapShape shape = new MapShape(); - int type = 0x51; // Wetlands // 0x4d; // glacier-white + int type = 0x1b; // Area - Green // 0x4d; // glacier-white shape.setMinResolution(10); shape.setName("background");
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