legacy/src/main/java/ucar/nc2/dt/point/CFPointObWriter.java
public static boolean rewritePointObsDataset(String fileIn, String fileOut, boolean inMemory) throws IOException {
    System.out.println("Rewrite2 .nc files from " + fileIn + " to " + fileOut + " inMemory= " + inMemory);

    long start = System.currentTimeMillis();

    // do it in memory for speed
    NetcdfFile ncfile = inMemory ? NetcdfFile.openInMemory(fileIn) : NetcdfFile.open(fileIn);
    NetcdfDataset ncd = new NetcdfDataset(ncfile);

    StringBuilder errlog = new StringBuilder();
    PointObsDataset pobsDataset = (PointObsDataset) TypedDatasetFactory.open(FeatureType.POINT, ncd, null, errlog);
    if (pobsDataset == null) return false;

    writePointObsDataset(pobsDataset, fileOut);
    pobsDataset.close();

    long took = System.currentTimeMillis() - start;
    System.out.println(" that took " + (took - start) + " msecs");
    return true;
  }
public static boolean rewritePointObsDataset(String fileIn, String fileOut, boolean inMemory) throws IOException {
    System.out.println("Rewrite2 .nc files from " + fileIn + " to " + fileOut + " inMemory= " + inMemory);

    long start = System.currentTimeMillis();

    // do it in memory for speed
    NetcdfFile ncfile = inMemory ? NetcdfFile.openInMemory(fileIn) : NetcdfFile.open(fileIn);
    NetcdfDataset ncd = new NetcdfDataset(ncfile);

    StringBuilder errlog = new StringBuilder();
    PointObsDataset pobsDataset = (PointObsDataset) TypedDatasetFactory.open(FeatureType.POINT, ncd, null, errlog);
    if (pobsDataset == null) return false;

    writePointObsDataset(pobsDataset, fileOut);
    pobsDataset.close();

    long took = System.currentTimeMillis() - start;
    System.out.println(" that took " + (took - start) + " msecs");
    return true;
  }
Open a ucar.nc2.dt.PointObsDataset, write out in CF point format.

@param fileIn   open through TypedDatasetFactory.open(FeatureType.POINT, ..)
@param fileOut  write to this netcdf-3 file
@param inMemory if true, read file into memory for efficiency
@return true on success
@throws IOException on read/write error