# Gradient problem using earth\_relief\_03s

**URL:** <https://forum.generic-mapping-tools.org/t/gradient-problem-using-earth-relief-03s/787>\
**Category:** Q&A\
**Created:** [August 18, 2020, 10:27am UTC](https://forum.generic-mapping-tools.org/t/gradient-problem-using-earth-relief-03s/787 "2020-08-18T10:27:08Z")\
**Posts on this page:** 1\
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**Author:** ![pwessel](https://yyz1.discourse-cdn.com/flex047/user_avatar/forum.generic-mapping-tools.org/pwessel/32/30_2.png) [@pwessel](https://forum.generic-mapping-tools.org/u/pwessel)\
**Post date:** [August 18, 2020, 10:56pm UTC](https://forum.generic-mapping-tools.org/t/gradient-problem-using-earth-relief-03s/787/5 "2020-08-18T22:56:26Z")

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No quite. For example, 7.4958 = 7:29:44.88 but should be 7:29:45 to be a multiple of 1 or 3 arc secs. ROund-off and not enough decimals. Eaiest to use

-R7:29:45/10:30:15/… etc

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