grdvector -I is misbehaving
|Target version:||Candidate for next bugfix release|
The -I option used to have no checking and could crash for incorrect arguments, but the check we added fails when trying to determine if the desired vector interval is a multiple of the grid interval.
#4 Updated by Paul about 5 years ago
Actually, there was one more bug. For geographic grids using the new geovector, the directions obtained from dx, dy were not converted to azimuths first. Also, -T is not valid with geographic data (no checking and giving a warning). In r12490; not sure what that does to your macports build update.