cdm/src/main/java/ucar/nc2/dataset/transform/AbstractTransformBuilder.java
protected double[] readAttributeDouble2(Attribute att) {
    if (att == null) return null;

    double[] val = new double[2];
    if (att.isString()) {
      StringTokenizer stoke = new StringTokenizer(att.getStringValue());
      val[0] = Double.parseDouble(stoke.nextToken());
      val[1] = stoke.hasMoreTokens() ? Double.parseDouble(stoke.nextToken()) : val[0];
    } else {
      val[0] = att.getNumericValue().doubleValue();
      val[1] = (att.getLength() > 1) ? att.getNumericValue(1).doubleValue() : val[0];
    }
    return val;
  }
protected double[] readAttributeDouble2(Attribute att) {
    if (att == null) return null;

    double[] val = new double[2];
    if (att.isString()) {
      StringTokenizer stoke = new StringTokenizer(att.getStringValue());
      val[0] = Double.parseDouble(stoke.nextToken());
      val[1] = stoke.hasMoreTokens() ? Double.parseDouble(stoke.nextToken()) : val[0];
    } else {
      val[0] = att.getNumericValue().doubleValue();
      val[1] = (att.getLength() > 1) ? att.getNumericValue(1).doubleValue() : val[0];
    }
    return val;
  }
Read an attribute as double[2]. If only one value, make second same as first.

@param att the attribute. May be numeric or String.
@return attribute value as a double[2]