Method getColumnIndex

core/src/main/java/io/ddf/DDF.java:968–970

@param columnName @return

(String columnName)

   * @return
   */
  public int getColumnIndex(String columnName) throws DDFException {
    return this.getSchema().getColumnIndex(columnName);
  }

  public String getColumnName(int columnIndex) throws DDFException {
    return this.getSchema().getColumnName(columnIndex);