protected Coordinate decodeCoordinate(JsonNode node) throws GeoJSONException {
if (!node.isArray()) {
throw new GeoJSONException("expected array");
}
final int dim = node.size();
if (dim < DIM_2D) {
throw new GeoJSONException("coordinates may have at least 2 dimensions");
}
if (dim > DIM_3D) {
throw new GeoJSONException("coordinates may have at most 3 dimensions");
}
final Coordinate coordinate = new Coordinate();
for (int i = 0; i < dim; ++i) {
if (node.get(i).isNumber()) {
coordinate.setOrdinate(i, node.get(i).doubleValue());
} else {
throw new GeoJSONException("coordinate index " + i + " has to be a number");
}
}
return coordinate;
}
