Issue 129 in osm2garmin: contour generation crossing Equator results in vertical lines

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osm2g...@googlecode.com

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Jul 19, 2014, 4:08:41 PM7/19/14
to mant...@gmail.com
Status: New
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Labels: Type-Defect Priority-High

New issue 129 by mappit...@gmail.com: contour generation crossing Equator
results in vertical lines
http://code.google.com/p/osm2garmin/issues/detail?id=129

Hello -

I have discovered a contour generation problem when maps are made in areas
of high contour density and cross the Equator. South of the Equator there
are vertical lines (contour lines) that extend south for a number of
kilometres. These lines are from contours that cross or are within 100
meters (south) of the Equator and do not "connect" or "complete" (except
through these long lines).

This problem is found across South America (I use Ecuador for testing) and
probably occurs in Africa and Indonesia also.

Additional notes:

There is a gap of appx. 100 meters in the contour line with this problem
It does not occur to every contour line (only those that cross the Equator
at an acute angle??)
Occurs to minor and major contours
Areas of low contour density (ex. East of Latitude -76) there are no
problems, to the West (high density) there are
This problem has only been found south of the Equator, not north
Splitting file creation at the Equator did not correct the problem
Changing program settings did not correct the problem


Maps were created using program defaults. Version 1.2.267 and Java 1.7.055
and Linux 3.11.0-12

What steps will reproduce the problem?
1. Create map
2. View at Equator at area of high contour density
3.

What is the expected output? What do you see instead?

Continuous contour lines.
A a very ugly map with vertical lines.

Please use labels and text to provide additional information.

Thanks, pitney



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