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I am working with a set of data that is in Latitude and Longitude. I need to convert this data to State Plane Coordinates. Does anyone know a formula to be able to do this or a Java library that can do this?

I have been looking online have found this from NOAA but I am needing to implement this in Java for a piece of software and would need something with an API or just a formula.

  • What does SPC stand for? – nmtoken Jun 21 '17 at 19:40
  • State plane coordinate – Austin Crabtree Jun 21 '17 at 19:46
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    Look for the Java proj4 port or geotools. If you're doing more than a handful of SPC zones, you'll have to have a table of the parameters or use the EPSG well-known IDs IF the Java proj4 port supports them. Search here for projection and java to find other possibilities. – mkennedy Jun 21 '17 at 19:51
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GeoTools handles reprojection of SRS for you.

You can use code like:

boolean lenient = false;
CoordinateReferenceSystem crs = DefaultGeographicCRS.WGS84;
CoordinateReferenceSystem target = CRS.decode("EPSG:3649");

MathTransform transform = CRS.findMathTransform(crs, target, lenient );
ReferencedEnvelope res = new ReferencedEnvelope(JTS.transform(bbox, transform),target);

Looking Up the EPSG code of your state plane is easy at http://epsg.io (for example EPSG:3649)

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