Hi, I was looking at the output that was generated with forcedDecimals from GeoServer's WFS GetFeature MapML formatted requests, and I noticed that for Web Mercator responses, large negative decimal coordinate values were ignoring the forcedDecimal setting from the user interface, returning the coordinate in scientific notation. I traced this back to the GeoTools CoordinateFormatter class.
GeoTools' CoordinateFormatter has a condition <https://github.com/geotools/geotools/blob/89c2e02626e384f31ab74ec8b249ddbe12800c6d/modules/library/xml/src/main/java/org/geotools/gml/producer/CoordinateFormatter.java#L102> that doesn't use forcedDecimal when the supplied number is in the -DECIMAL_MIN to +DECIMAL_MIN range, or when the value of the supplied number is less than the DECIMAL_MAX field, or zero. I *believe* the intent was that the default formatting code path (scientific notation, presumably) should be used when the value of the supplied number was between -DECIMAL_MAX and +DECIMAL_MAX but not in the -DECIMAL_MIN to +DECIMAL_MIN range, nor zero. So I changed it <https://github.com/Maps4HTML/geotools/blob/b430b40cc19b4c6d5b3915cfad451677a217d37b/modules/library/xml/src/main/java/org/geotools/gml/producer/CoordinateFormatter.java#L102>, and added some <https://github.com/Maps4HTML/geotools/blob/b430b40cc19b4c6d5b3915cfad451677a217d37b/modules/library/xml/src/test/java/org/geotools/gml/producer/CoordinateFormatterTest.java#L31> tests <https://github.com/Maps4HTML/geotools/blob/b430b40cc19b4c6d5b3915cfad451677a217d37b/modules/library/xml/src/test/java/org/geotools/gml/producer/CoordinateFormatterTest.java#L58>to cover the changes, and without changing any other tests, it passes. I also ran the GeoServer tests on these branches / artifacts and they also pass. If I don't hear differing opinions in response to this, I'll go ahead and create a JIRA issue and a couple of PRs to close the issue. Thanks! Peter
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