Hi Steve, ok, got it: 1 / 0.3048 ~ 3,2808, which is also mentioned here: http://www.metric-conversions.org/length/feet-to-meters.htm So, I think it is plausible that the factor is a constant. I'd prefer to use something like // length should be in units of 16 feet return (int) (l * 0.3048) / 16; And maybe this also gives the precise default value for short-arc-removal: 16 * 0.3048 = 4,8768 Gerd GerdP wrote
Hi Steve,
in mkgmap.jar (RouteArc) we use private static int convertMeters(double l) { // XXX: really a constant factor? // this factor derived by looking at a variety // of arcs in an IMG of Berlin; 1/4 of // what used to be here double factor = 3.28 / 16; return (int) (l * factor); }
In the display tool we use // length should be in units of 16 feet item.addText("length %d (%dm)", len, (int)(len * 16 / 3.25));
I guess it should always be either 3.28 or 3.25? On the other hand, if the length is somehow related to the unit foot, why do I not see something like 0.3048?
Gerd
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