The default garmin style (no TYP added), does draw the wetland in the forest. Actually it seems to draw it over the forest (no transparency).
This occurs even without the --order-by-decreasing-area. Regards Karl On måndag 2 november 2020 kl. 18:26:42 CET 7770 wrote: > Hi. > No worries. It just means that the map maker must be more thorough. > I can see that some makers take this into consideration, but others have > not. In effect it means that data is processed, but in the end cannot be > shown if the TYP is applied at the end. > > --order-by-decreasing-area, according to the documentation only works if the > polygons have the same draw order, which these two do not by default. > > > Regards > Karl > > On måndag 2 november 2020 kl. 18:18:11 CET Ticker Berkin wrote: > > Hi > > > > I understand that many users prefer a fixed order of rendering based on > > the polygon type, and this is part of the definition of mapnik.txt and > > seems to be the 'Garmin' way of doing things. > > > > If there is a consensus that the draworder should be different, then > > make it so. I'd think that wetland and forest should be the same as the > > other large-area landuse polygons, with priority 2 > > > > Option --order-by-decreasing-area removes the need to make any of these > > fixed rendering choices but at the cost of an increase in map size and, > > possibly, mkgmap execution time. It works for MapSource and BaseCamp > > and Garmin devices I've encountered, but not for GPSMapEdit. > > If used, it is best to set the draworder for all real polygons to the > > same value. > > > > It is a shame that the TYP.txt file has to contain everything > > (draworder, translations and object colour/icons). It would be > > beneficial it they could separated and the wanted variants of > > components supplied to mkgmap. > > > > Ticker > > > > On Mon, 2020-11-02 at 16:55 +0100, 7770 wrote: > > > Hi. > > > > > > In the example mapnik.txt TYP file, the draworder of the polygons for > > > woods/ > > > forest 0x50 and wetland 0x51 are given like this: > > > > > > [_drawOrder] > > > .. > > > Type=0x050,3 > > > .. > > > Type=0x051,2 > > > .. > > > [End] > > > > > > > > > When compiling a map, this means that wetlands in forests are not > > > visible if > > > this TYP is used. > > > > > > I tried makling a map using the same draworder > > > Type=0x050,2 > > > Type=0x051,2 > > > plus using the option --order-by-decreasing-area > > > > > > This makes the wetland visible in forests. > > > I could not see any negative impacts of this in the areas which i > > > checked (a > > > few in Sweden and Norway). Wetlands over other areas seems to work > > > fine as > > > well. > > > > > > Do you think such a change would be of help or is there a great risk > > > that this > > > type of change would impact negatively on the drawing of the maps? > > > > > > > > > > > > Regards > > > Karl > > > > > > > > > _______________________________________________ > > > mkgmap-dev mailing list > > > [email protected] > > > http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev > > > > _______________________________________________ > > mkgmap-dev mailing list > > [email protected] > > http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev > > _______________________________________________ > mkgmap-dev mailing list > [email protected] > http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev _______________________________________________ mkgmap-dev mailing list [email protected] http://www.mkgmap.org.uk/mailman/listinfo/mkgmap-dev
