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<body class='hmmessage'><div dir='ltr'>Hi all,<br><br>attached is a patch that addresses the problem described be Roger Calvert:<br>http://gis.19327.n5.nabble.com/Incorrect-compilation-of-grid-lines-tp5809502.html<br><br>The problem is caused by the fact that we use a 2D formula for objects which are on<br>a spherical surface. In most cases the error is very small and can be ignored, but <br>sometimes it isn't. We use the formula to decide whether a point is important or<br>not, so I decided that to keep all points where the error is big.<br>A better way would be to use a correct formula in that cases, but I am not clever<br>enough to code the correct formula in Java :-(<br><br>@Roger: Please check if the results are ok for you. <br>BTW: osmconvert seems to have a problem with some coordinates, e.g.<br><node id='90053000500' lat='54.3788936' lon='1.67E-05' version='1'/><br>is interpreted as <br><node id="90053000500" lat="54.3788936" lon="1.67" version="1"/><br>Don't know if the OSM api allows the exponent format?<br><br>A compiled patched binary for mkgmap can be found here:<br><code>http://files.mkgmap.org.uk/download/217/mkgmap.jar</code><br><br>Gerd<br><br> </div></body>
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