docs: def hdr(data, filename):
      """
      write ENVI header files
  
      Parameters
      ----------
      data: str or dict
          the file or dictionary to get the info from
      filename: str
          the HDR file to write
  
      Returns
      -------
  
      """
      hdrobj = data if isinstance(data, HDRobject) else HDRobject(data)
      hdrobj.write(filename)