ryancramerdesign/FieldtypeMapMarker — pull request #4 by adrianbj (2014-03-14 15:03:37+00:00)
Title: Fix for Warning: 1265 Data truncated for column 'lat' at row 1 error

See:
http://processwire.com/talk/topic/5833-problem-creating-new-page-from-api-with-custom-field-with-a-float-subfield/

Although you can ignore most of that, because you'll notice at the end I realize that it's admin as well, and not just API generated pages.

Thanks for Wanze for noticing the easy fix!