MID_RD_TABLE

       Open and read data from a MIDAS table.

       MID_RD_TABLE,table,ncol,nrow,data

       Table =  file name of MIDAS table or Logical Unit Number.
       * If a filename is given, the file will be opened and closed
               using a local LUN. An extension -- not to be
               supplied -- of .TBL is assumed.  No version number is
               allowed: the most recent version is used.
       * If an LUN is given, the file associated with that LUN will
               be used.

       Ncol =   number of columns in the input MIDAS table.  Long
               integer (I*4).
       Nrow =   number of rows in the MIDAS table. Long integer (I*4).
       Data =   table data.  Floating (R*4).  Data is of dimensions
               nrow*ncol.  The select column in the MIDAS table is
               disregarded.

       We first consider the File Control Block of the MIDAS table file
       to determine the start of descriptor information and the start of
       the data.
       Next we consider the Descriptor Directory Entry for `tblcontr' (the
       number of columns and rows allocated; followed by the number of
       columns and rows in the actual table).
       Finally we read the data values.

       Real data handled only.  Midas table SELECTION mechanism is ignored.
       Also ignored are missing values.
       Midas file extensions (.tbl) assumed lower case.

       FM  -  Fionn Murtagh, ST-ECF, Munich.

       OCT 1988  FM  Initial programming.
       MAY 1989  FM  Name change, debugging, etc.
       FEB 1991  FM  Conversion to V.2 IDL, Unix.
       Converted to IDL V5.0   W. Landsman   September 1997

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