locationtech / locationtech/proj4j
VN2000 Error Exception in thread "main" java.lang.IllegalStateException: Latitude is out of range: 9738.514891355962
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bug
- Dominant language
- Java
- Stars
- 232
- Forks
- 86
- PR merge metrics
- No merged PRs in 30d
Description
CRSFactory crsFactory = new CRSFactory();
CoordinateReferenceSystem WGS84 = crsFactory.createFromParameters("WGS84",
"+proj=longlat +datum=WGS84 +no_defs");
CoordinateReferenceSystem UTM = crsFactory.createFromParameters("VN-2000",
"+proj=longlat +ellps=WGS84 +towgs84=-191.90441429,-39.30318279,-111.45032835,0.00928836,-0.01975479,0.00427372,0.252906278 +no_defs");
CoordinateTransformFactory ctFactory = new CoordinateTransformFactory();
CoordinateTransform wgsToUtm = ctFactory.createTransform(WGS84, UTM);
// result is an output parameter to transform()
ProjCoordinate result = new ProjCoordinate();
wgsToUtm.transform(new ProjCoordinate(13, 13), result);
System.err.println(result);
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First steps
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Research direction
Start by reproducing the code shown in the issue, following CRSFactory.createFromParameters, CoordinateTransformFactory.createTransform, and CoordinateTransform.transform(). Inspect how the VN-2000 CRS parameters are interpreted and determine why the reported latitude range exception occurs; done means the behavior is explained and a verified correction or documented limitation is established.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- java
- Domain
- backend
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100