Ticker Berkin <rwb-mkgmap@jagit.co.uk> writes:
Looking at the code, there shouldn't be any crash from mkgmap if a contour line doesn't have an "ele" tag. I assume the Garmin device will just draw the appropriate line without a label. This might be common where alternate contours are not given heights.
So, no; I don't think you should add any checks.
I'm just barely reading list mail, but I agree with Ticker. A contour line without an elevation still makes sense, at least enough sense that it shouldn't be rejected. However, I don't really grasp Gerd's comment about elevations used for routing. Presumably that is in some newfangled Garmin device that proceses a route with respect to contours? If so, then I see how this is really hard, choosing between: reject accept accept only if some flag is or isn't given, to be set depending on if one is building maps for routing/elevation devices