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Hotine Oblique Mercator, Azimuth=0, projection initialization failure #195

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proj4-bot opened this issue May 22, 2015 · 1 comment
Closed

Hotine Oblique Mercator, Azimuth=0, projection initialization failure #195

proj4-bot opened this issue May 22, 2015 · 1 comment
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bug C: Core P: trivial
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5.0.0

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Reported by berwyn on 31 Oct 2012 08:33 UTC
Setting the azimuth to 0
throws an error, using a small value 0.0001 is ok

As suggested by Frank, removing the following tolerance test src/pj_omerc.c, resolves the problem

if ((con = fabs(alpha_c)) <= TOL ||
 fabs(con - PI) <= TOL ||
 fabs(fabs(P->phi0) - HALFPI) <= TOL)
 E_ERROR(-32);

Migrated-From: https://trac.osgeo.org/proj/ticket/195
@proj4-bot proj4-bot added this to the 4.8.0 milestone May 22, 2015
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Comment by berwyn on 5 Jan 2013 01:36 UTC
Any word if a update/fix has been applied?

kbevers added a commit that referenced this issue Oct 18, 2016
@kbevers
Allow +alpha=0 and +gamma=0 when using omerc. Applied fix proposed in #…
e3346bb 
…195.
@kbevers kbevers modified the milestones: 4.10.0, 4.8.0 Oct 18, 2016
@kbevers kbevers closed this as completed Oct 18, 2016
rouault added a commit to rouault/PROJ that referenced this issue Apr 10, 2019
@rouault
omerc: avoid division by zero when |lat_0|=90
00dffd7 
Partially revert e3346bb (OSGeo#195)

Fixes https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=14136
Credit to OSS Fuzz
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bug C: Core P: trivial
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