cdm/src/main/java/ucar/nc2/dataset/CoordinateAxis.java
public boolean isNumeric() {
    return (getDataType() != DataType.CHAR) &&
            (getDataType() != DataType.STRING) &&
            (getDataType() != DataType.STRUCTURE);
  }
public boolean isNumeric() {
    return (getDataType() != DataType.CHAR) &&
            (getDataType() != DataType.STRING) &&
            (getDataType() != DataType.STRUCTURE);
  }
Does the axis have numeric values.

@return true if the CoordAxis is numeric, false if its string valued ("nominal").