0> In article <20090120230606.GA3093@parabola.demon.co.uk>, 0> Steve Ratcliffe <URL:mailto:steve@parabola.demon.co.uk> ("Steve") wrote:
BTW, does mkgmap dislike negative ID values when reading OSM files? gpsbabel writes these when writing, and I was wondering whether that's what was causing empty tiles in my first attempt.
Steve> Negative ID's are fine. Infact recently even arbitary string Steve> values are OK (although will slow things down if there are a Steve> lot of them). I've undone the processing of these, and it all seems to work okay again. It was one avenue of thought until I realised that I had written "contour_ext"="minor" instead of "contour_ext"="elevation_minor" (etc.). Having fixed that, my pipeline generates nice contours. (Well, moderately nice - gdal_contour is still a fairly dumb bilinear-ish interpolator).