private void readOneRadial(Cinrad2Record r, int datatype, Range gateRange, IndexIterator ii) throws IOException { if (r == null) { for (int i = gateRange.first(); i <= gateRange.last(); i += gateRange.stride()) ii.setByteNext(Cinrad2Record.MISSING_DATA); return; } r.readData(volScan.raf, datatype, gateRange, ii); }