make description for 'GPSLatitude' and 'GPSLongitude' positive/negative

[ghost]

When sending coordinates to Google or Bing maps using a decimal latitude/longitude, they expect negative numbers if the coordinate is West or South. I'm working around this by testing the GPSLatitudeRef and GPSLongitudeRef and multiplying the description by -1 if the array returned by the Ref contains "W" or "S".

sign = exifReader.getTagValue('GPSLatitudeRef').indexOf('N') === -1 ? -1 : 1;
This would also work: sign = exifReader.getTagValue('GPSLatitudeRef').indexOf('N') || 1

[mattiasw]

I'm not sure that should be the responsibility of the library. The GPSLatitude and GPSLongitude tags don't have that kind of information. That's what the ref tags are for. Also, if the the corresponding ref tag is missing for some reason, the caller could get a faulty value (positive when it should be negative) and never know about it.