On Mon, Apr 13, 2009 at 1:50 PM, Johann Gail <johann.gail@gmx.de> wrote:
On my eTrex when I zoom out to scales of 50 or 80 km, it can take a very long time for the device to draw the map. From my observation of the way the map is drawn, it seems like the highways are drawn segment by segment.
Yes, I made the same observation. The highways gets drawn segment by segment. Therefore I introduced the switch --merge-lines, which should merge the segements.
My initial observations are that with --merge-lines set, and simplification set to the default level, - map compilation takes significantly longer, and - display in my eTrex is significantly faster. In my opinion, it's worth the wait. :-) Of course, I did not have repeatable test cases to create empirical values for the drawing times: these initial observations are completely subjective. Cheers.