Index of Functions: A B C D E F G H I J K L M N O P Q R S T U V W X
Index Page ekgc_c
Table of contents
Procedure Abstract Required_Reading Keywords Brief_I/O Detailed_Input | Detailed_Output Parameters Exceptions Files Particulars Examples | Restrictions Literature_References Author_and_Institution Version Index_Entries
#### Procedure
       ekgc_c ( EK, get event data, character )

       void ekgc_c ( SpiceInt          selidx,
                     SpiceInt          row,
                     SpiceInt          elment,
                     SpiceInt          cdatln,
                     SpiceChar       * cdata,
                     SpiceBoolean    * null,
                     SpiceBoolean    * found  )
#### Abstract
       Return an element of an entry in a column of character
       type in a specified row.
#### Required_Reading
       EK
#### Keywords
       ASSIGNMENT
       EK
#### Brief_I/O
       VARIABLE  I/O  DESCRIPTION
       --------  ---  --------------------------------------------------
       selidx     I   Index of parent column in SELECT clause.
       row        I   Row to fetch from.
       elment     I   Index of element, within column entry, to fetch.
       cdatln     I   Maximum length of column element.
       cdata      O   Character string element of column entry.
       null       O   Flag indicating whether column entry was null.
       found      O   Flag indicating whether column was present in row.
#### Detailed_Input
       selidx      is the SELECT clause index of the column to fetch
                   from. The range of selidx is from 0 to one less than
                   the number of columns in the SELECT clause.

       row         is the output row containing the entry to fetch
                   from. The range of row is from 0 to one less than
                   the number of rows satisfying the previous query.

       elment      is the index of the element of the column entry
                   to fetch. The normal range of elment is from 0 to
                   one less than the size of the column's entry, but
                   elment is allowed to exceed the number of elements in
                   the column entry; if it does, found is returned
                   as SPICEFALSE. This allows the caller to read data
                   from the column entry in a loop without checking the
                   number of available elements first.

                   Null values in variable-sized columns are
                   considered to have size 1.

       cdatln      is the maximum allowed length of a string that
                   can be fetched into the string cdata. This length
                   must large enough to hold the specified element of the
                   column entry, plus a null terminator. If the column
                   element is expected to have x characters, `cdatln' needs
                   to be x + 1.
#### Detailed_Output
       cdata       is the requested element of the specified column
                   entry. If the entry is null, cdata is undefined.

                   If cdata is too short to accommodate the requested
                   column entry element, the element is truncated on
                   the right to fit cdata.

       null        is a logical flag indicating whether the entry
                   belonging to the specified column in the specified
                   row is null.

       found       is a logical flag indicating whether the specified
                   element was found. If the element does not exist,
                   found is returned as SPICEFALSE.
#### Parameters
       None.
#### Exceptions
       1)  If the input argument `elment' is less than 0, the error
           SPICE(INVALIDINDEX) is signaled by a routine in the call tree of this
           routine and `found' is returned SPICEFALSE. However, `elment' is allowed
           to be greater than or equal to the number of elements in the specified
           column entry; this allows the caller to read data from the column entry
           in a loop without checking the number of available elements first. If
           `elment' is greater than or equal to the number of available elements,
           `found' is returned SPICEFALSE.

       2)  If `selidx' is outside of the range established by the last query
           passed to the EK search engine, the error SPICE(INVALIDINDEX) is
           signaled by a routine in the call tree of this routine and `found' is
           returned SPICEFALSE.

       3)  If the input argument `row' is less than 0 or greater than or equal to
           the number of rows matching the query, the error SPICE(INVALIDINDEX) is
           signaled by a routine in the call tree of this routine and `found' is
           returned SPICEFALSE.

       4)  If the specified column does not have character type, the
           error SPICE(INVALIDTYPE) is signaled by a routine in the call
           tree of this routine.

       5)  If this routine is called when no E-kernels have been loaded,
           the error SPICE(NOLOADEDFILES) is signaled by a routine in the
           call tree of this routine.

       6)  If the `cdata' output string pointer is null, the error
           SPICE(NULLPOINTER) is signaled.

       7)  If the `cdata' output string has length less than two
           characters, the error SPICE(STRINGTOOSHORT) is signaled, since
           the output string is too short to contain one character of
           output data plus a null terminator.
#### Files
       The EK "query and fetch" suite of functions reads binary `sequence
       component' EK files. In order for a binary EK file to be
       accessible to this routine, the file must be `loaded' via a call
       to the function eklef_c.

       Text format EK files cannot be used by this routine; they must
       first be converted by binary format by the NAIF Toolkit utility
       SPACIT.
#### Particulars
       This routine allows retrieval of data from character columns.

       This routine returns one element at a time in order to save the
       caller from imposing a limit on the size of the column entries
       that can be handled.
#### Examples
       The numerical results shown for these examples may differ across
       platforms. The results depend on the SPICE kernels used as
       input, the compiler and supporting libraries, and the machine
       specific arithmetic implementation.

       1) Perform a query on an EK file that contains a database with
          the Supplementary Engineering Data Records of the Viking
          Project in order to retrieve the IMAGE_ID values (character
          strings) that correspond to the images with IMAGE_NUMBER
          smaller than a given value, ordered by IMAGE_NUMBER.

          Use the EK kernel below to load the information from the
          original Supplementary Engineering Data Record (SEDR) data
          set generated by the Viking Project.

             vo_sedr.bdb

          Example code begins here.

          /.
             Program ekgc_ex1
          ./
          #include <stdio.h>
          #include "SpiceUsr.h"

          int main( )
          {

             /.
             Local parameters
             ./
             #define EKNAME       "vo_sedr.bdb"
             #define ERRLEN       1840

             /.
             Local variables
             ./
             SpiceChar            cdata  [SPICE_EK_MAXQSTR];
             SpiceChar            errmsg [ERRLEN];
             SpiceChar          * query;

             SpiceInt             eltidx;
             SpiceInt             nmrows;
             SpiceInt             rowno;
             SpiceInt             selidx;

             SpiceBoolean         error;
             SpiceBoolean         found;
             SpiceBoolean         isnull;

             /.
             Open an EK file.
             ./
             furnsh_c ( EKNAME );

             /.
             The table "VIKING_SEDR_DATA" has a column "IMAGE_ID"
             of scalar strings.

             Define a set of constraints to perform a query on
             all loaded EK files (the SELECT clause). In this
             case select the column "IMAGE_ID" from table
             "VIKING_SEDR_DATA" sorted by "IMAGE_NUMBER".
             ./
             query = "Select IMAGE_ID from VIKING_SEDR_DATA where "
                     "IMAGE_NUMBER < 25860000 order by IMAGE_NUMBER";

             /.
             Query the EK system for data rows matching the
             SELECT constraints.
             ./
             ekfind_c ( query, ERRLEN, &nmrows, &error, errmsg );

             /.
             Check whether an error occurred while processing the
             SELECT clause. If so, output the error message.
             ./
             if ( error )
             {
                printf( "SELECT clause error:  %s\n", errmsg );
             }
             else
             {

                /.
                Fetch the character data. We know the query returned
                one column and the column contains only scalar data,
                so the index of all elements is 0.
                ./
                selidx = 0;
                eltidx = 0;

                /.
                Loop over each row found matching the query.
                ./
                for ( rowno = 0; rowno < nmrows; rowno++ )
                {

                   printf( "Row  %2d: Character data: ", rowno );

                   /.
                   Use ekgc_c to retrieve the string from
                   ./
                   ekgc_c ( selidx,  rowno,   eltidx, SPICE_EK_MAXQSTR,
                            cdata,  &isnull, &found                    );

                   if ( isnull )
                   {
                      printf( "<Null>\n" );
                   }
                   else
                   {
                      printf( " %s\n", cdata );
                   }

                }

             }

             return ( 0 );
          }

          When this program was executed on a Mac/Intel/cc/64-bit
          platform, the output was:

          Row   0: Character data:  168C09
          Row   1: Character data:  168C10
          Row   2: Character data:  168C11
          Row   3: Character data:  168C12
          Row   4: Character data:  169C01
          Row   5: Character data:  169C02
          Row   6: Character data:  169C03
          Row   7: Character data:  169C04
          Row   8: Character data:  169C05
          Row   9: Character data:  169C09
          Row  10: Character data:  169C11
          Row  11: Character data:  169C19
          Row  12: Character data:  169C23
          Row  13: Character data:  169C25
          Row  14: Character data:  169C26
          Row  15: Character data:  169C30
          Row  16: Character data:  169C32
          Row  17: Character data:  169C33
          Row  18: Character data:  169C37
          Row  19: Character data:  169C39
          Row  20: Character data:  169C40
          Row  21: Character data:  169C44
          Row  22: Character data:  169C46
          Row  23: Character data:  169C47
          Row  24: Character data:  169C51
          Row  25: Character data:  169C53

       2) This example demonstrates how to fetch string values from a
          column in three different cases: single values, variable-size
          arrays and static-size arrays.

          Create an EK that contains a table TAB that has the following
          columns:

             Column name   Data Type   Size
             -----------   ---------   ----
             CHR_COL_1     CHR         1
             CHR_COL_2     CHR         VARIABLE
             CHR_COL_3     CHR         3

          Issue the following query

              query = "SELECT CHR_COL_1, CHR_COL_2, CHR_COL_3 FROM TAB"

          to fetch and dump column values from the rows that satisfy the
          query.

          Example code begins here.

          /.
             Program ekgc_ex2
          ./
          #include <stdio.h>
          #include <string.h>
          #include "SpiceUsr.h"

          int main( )
          {

             /.
             Local parameters
             ./
             #define EKNAME       "ekgc_ex2.bdb"
             #define TABLE        "TAB"
             #define CHRSLN       4
             #define COL3SZ       3
             #define DECLEN       201
             #define ERRLEN       1841
             #define MXC2SZ       8
             #define NCOLS        3
             #define NROWS        4
             #define STRSIZ       31

             /.
             Local variables
             ./
             SpiceChar            cdecls [NCOLS][DECLEN];
             SpiceChar            cnames [NCOLS][SPICE_EK_CSTRLN];
             SpiceChar            col1   [STRSIZ];
             SpiceChar            col2   [MXC2SZ][CHRSLN];
             SpiceChar            col3   [COL3SZ][CHRSLN];
             SpiceChar            cvals  [MXC2SZ][STRSIZ];
             SpiceChar            errmsg [ERRLEN];
             SpiceChar          * ifname;
             SpiceChar          * query;

             SpiceInt             eltidx;
             SpiceInt             handle;
             SpiceInt             i;
             SpiceInt             j;
             SpiceInt             nelt;
             SpiceInt             nmrows;
             SpiceInt             nresvc;
             SpiceInt             recno;
             SpiceInt             row;
             SpiceInt             segno;
             SpiceInt             selidx;

             SpiceBoolean         error;
             SpiceBoolean         found;
             SpiceBoolean         isnull;

             /.
             Open a new EK file.  For simplicity, we will not
             reserve any space for the comment area, so the
             number of reserved comment characters is zero.
             The variable `ifname' is the internal file name.
             ./
             nresvc  =  0;
             ifname  =  "Test ek/created 13-JUN-2019";

             ekopn_c ( EKNAME, ifname, nresvc, &handle );

             /.
             Set up the column names and declarations
             for the TAB segment.  We'll index all of
             the columns.
             ./
             strcpy( cnames[0], "CHR_COL_1" );
             strcpy( cdecls[0], "DATATYPE = CHARACTER*(*), indexed  = true" );

             strcpy( cnames[1], "CHR_COL_2" );
             strcpy( cdecls[1], "DATATYPE = CHARACTER*(3), size = variable" );

             strcpy( cnames[2], "CHR_COL_3" );
             strcpy( cdecls[2], "DATATYPE = CHARACTER*(3), size = 3" );

             /.
             Start the segment.
             ./
             ekbseg_c ( handle, TABLE,  NCOLS,   SPICE_EK_CSTRLN,
                        cnames, DECLEN, cdecls, &segno           );

             /.
             At the records to the table.
             ./
             for ( i = 1; i <= NROWS; i++ )
             {

                /.
                Append a new record to the EK.
                ./
                ekappr_c ( handle, segno, &recno );

                /.
                Add CHR_COL_1
                ./
                repmi_c ( "Column #2 has $ elements.", "$", i*2, STRSIZ, col1 );

                ekacec_c ( handle, segno,  recno, cnames[0],
                           1,      STRSIZ, col1,  SPICEFALSE );

                /.
                Add i*2 items to CHR_COL_2
                ./
                for ( j = 0; j < i*2; j++ )
                {
                   sprintf ( col2[j], "%d", j+1 + i*100 );
                }

                ekacec_c ( handle, segno,  recno, cnames[1],
                           i*2,    CHRSLN, col2,  SPICEFALSE );

                /.
                Add 3 items to CHR_COL_3
                ./
                for ( j = 0; j < 3; j++ )
                {
                   sprintf ( col3[j], "%d", i + (j+1)*100 );
                }

                ekacec_c ( handle, segno,  recno, cnames[2],
                           3,      CHRSLN, col3,  SPICEFALSE );

             }

             /.
             Close the file.
             ./
             ekcls_c ( handle );

             /.
             Open the created file. Perform the query and show the
             results.
             ./
             furnsh_c ( EKNAME );

             query = "SELECT CHR_COL_1, CHR_COL_2, CHR_COL_3 FROM TAB";

             /.
             Query the EK system for data rows matching the
             SELECT constraints.
             ./
             ekfind_c ( query, ERRLEN, &nmrows, &error, errmsg );

             /.
             Check whether an error occurred while processing the
             SELECT clause. If so, output the error message.
             ./
             if ( error )
             {

                printf( "SELECT clause error:  %s\n", errmsg );

             }
             else
             {

                for ( row = 0; row < nmrows; row++ )
                {

                   printf( " \n" );
                   printf( "ROW  =  %2d\n", row );

                   /.
                   Fetch values from column CHR_COL_1.  Since
                   CHR_COL_1 was the first column selected, the
                   selection index `selidx' is set to 0.
                   ./
                   selidx = 0;
                   eltidx = 0;
                   ekgc_c ( selidx,    row,     eltidx, STRSIZ,
                            cvals[0], &isnull, &found          );

                   printf( "  COLUMN = CHR_COL_1: " );

                   if ( isnull )
                   {
                      printf( "<Null>\n" );
                   }
                   else
                   {
                      printf( "%s\n", cvals[0] );
                   }

                   /.
                   Fetch values from column CHR_COL_2 in the current
                   row.  Since CHR_COL_2 contains variable-size array
                   elements, we call eknelt_c to determine how many
                   elements to fetch.
                   ./
                   selidx = 1;
                   nelt = eknelt_c ( selidx, row );

                   eltidx = 0;
                   isnull = SPICEFALSE;

                   while ( ( eltidx <= nelt ) && ( !isnull ) )
                   {

                      ekgc_c ( selidx,         row,     eltidx, STRSIZ,
                               cvals[eltidx], &isnull, &found          );

                      eltidx = eltidx + 1;

                      /.
                      If the column entry is null, we'll be kicked
                      out of this loop after the first iteration.
                      ./
                   }

                   printf( "  COLUMN = CHR_COL_2: " );

                   if ( isnull )
                   {
                      printf( "<Null>\n" );
                   }
                   else
                   {
                       for ( i = 0; i < nelt; i++ )
                       {
                          printf( "%s ", cvals[i] );
                       }
                       printf("\n");
                   }

                   /.
                   Fetch values from column CHR_COL_3 in the current
                   row.  We need not call eknelt_c since we know how
                   many elements are in each column entry.
                   ./
                   selidx = 2;
                   eltidx = 0;
                   isnull = SPICEFALSE;

                   while ( ( eltidx <= COL3SZ ) && ( !isnull ) )
                   {

                      ekgc_c ( selidx,         row,     eltidx, STRSIZ,
                               cvals[eltidx], &isnull, &found          );

                      eltidx = eltidx + 1;

                   }

                   printf( "  COLUMN = CHR_COL_3: " );

                   if ( isnull )
                   {
                      printf( "<Null>\n" );
                   }
                   else
                   {

                       printf( "%s %s %s\n", cvals[0], cvals[1], cvals[2] );
                   }

                }

                /.
                We either parsed the SELECT clause or had an error.
                ./
             }

             return ( 0 );
          }

          When this program was executed on a Mac/Intel/cc/64-bit
          platform, the output was:

          ROW  =   0
            COLUMN = CHR_COL_1: Column #2 has 2 elements.
            COLUMN = CHR_COL_2: 101 102
            COLUMN = CHR_COL_3: 101 201 301

          ROW  =   1
            COLUMN = CHR_COL_1: Column #2 has 4 elements.
            COLUMN = CHR_COL_2: 201 202 203 204
            COLUMN = CHR_COL_3: 102 202 302

          ROW  =   2
            COLUMN = CHR_COL_1: Column #2 has 6 elements.
            COLUMN = CHR_COL_2: 301 302 303 304 305 306
            COLUMN = CHR_COL_3: 103 203 303

          ROW  =   3
            COLUMN = CHR_COL_1: Column #2 has 8 elements.
            COLUMN = CHR_COL_2: 401 402 403 404 405 406 407 408
            COLUMN = CHR_COL_3: 104 204 304

          Note that after run completion, a new EK file exists in the
          output directory.

       3) Query the EK system and fetch data matching that query.

          The program shown here does not rely on advance
          knowledge of the input query or the contents of any loaded EK
          files.

          To simplify the example, we assume that all data are scalar.
          This assumption relieves us of the need to test the size of
          column entries before fetching them. In the event that a
          column contains variable-size array entries, the entry point
          eknelt_c may be called to obtain the size of column entries to
          be fetched. See eknelt_c for an example.

          Use the EK kernel below to load the information from the
          original Supplementary Engineering Data Record (SEDR) data
          set generated by the Viking Project.

             vo_sedr.bdb

          Use the LSK kernel below to load the leap seconds and time
          constants required for the conversions.

             naif0012.tls

          Example code begins here.

          /.
             Program ekgc_ex3
          ./
          #include <stdio.h>
          #include "SpiceUsr.h"

          int main( )
          {

             /.
             Local parameters
             ./
             #define EKNAME       "vo_sedr.bdb"
             #define LSKNAM       "naif0012.tls"
             #define ERRLEN       1840
             #define TIMLEN       27
             #define TYPLEN       4
             #define XCLSLN       4

             /.
             Local variables
             ./
             SpiceChar            cdata  [SPICE_EK_MAXQSTR];
             SpiceChar            cols   [SPICE_EK_MAXQSEL][SPICE_EK_MAXQRY];
             SpiceChar            errmsg [ERRLEN];
             SpiceChar          * query;
             SpiceChar            utcstr [TIMLEN];
             SpiceChar            tabs   [SPICE_EK_MAXQTAB][SPICE_EK_MAXQRY];
             SpiceEKExprClass     xclass [SPICE_EK_MAXQSEL];
             SpiceEKDataType      xtypes [SPICE_EK_MAXQSEL];

             SpiceDouble          ddata;
             SpiceDouble          tdata;

             SpiceInt             b;
             SpiceInt             colno;
             SpiceInt             e;
             SpiceInt             handle;
             SpiceInt             idata;
             SpiceInt             n;
             SpiceInt             nmrows;
             SpiceInt             row;
             SpiceInt             xbegs  [SPICE_EK_MAXQSEL];
             SpiceInt             xends  [SPICE_EK_MAXQSEL];

             SpiceBoolean         error;
             SpiceBoolean         found;
             SpiceBoolean         null;

             /.
             Load leapseconds file for time conversion.
             ./
             furnsh_c ( LSKNAM );

             /.
             Load EK.
             ./
             eklef_c ( EKNAME, &handle );

             /.
             Setup the query.  Parse the SELECT clause using
             ekpsel_c.
             ./
             query = "Select IMAGE_NUMBER, IMAGE_ID, PLATFORM_CLOCK, IMAGE_TIME "
                     "from VIKING_SEDR_DATA where IMAGE_NUMBER < 25850000 "
                     "order by IMAGE_NUMBER";

             ekpsel_c ( query,  ERRLEN, SPICE_EK_MAXQRY, SPICE_EK_MAXQRY,
                        &n,     xbegs,  xends,           xtypes,
                        xclass, tabs,   cols,           &error,          errmsg );

             if ( error )
             {
                printf( "%s\n", errmsg );
             }
             else
             {

                /.
                Submit query to the EK query system.
                ./
                ekfind_c ( query, ERRLEN, &nmrows, &error, errmsg );

                if ( error )
                {

                   printf( "%s\n", errmsg );

                }
                else
                {

                   /.
                   Fetch the rows that matched the query.
                   ./
                   for ( row = 0; row < nmrows; row++ )
                   {

                      /.
                      Fetch data from the ith row.
                      ./
                      printf( " \n" );
                      printf( "ROW =  %d\n", row );

                      for ( colno = 0; colno < n; colno++ )
                      {

                         /.
                         Fetch the data from the jth selected
                         column.
                         ./
                         if ( xclass[colno] == SPICE_EK_EXP_COL )
                         {
                            printf( "  %s.%-14s: ", tabs[colno], cols[colno] );
                         }
                         else
                         {
                            b  =  xbegs[colno];
                            e  =  xends[colno];
                            printf( "ITEM =  (%.*s)", e-b, query+b );
                         }

                         if ( xtypes[colno] == SPICE_CHR )
                         {
                            ekgc_c ( colno,  row,   1, SPICE_EK_MAXQSTR,
                                     cdata, &null, &found               );

                            if ( null )
                            {
                               printf( "<Null>\n" );
                            }
                            else
                            {
                               printf( "%s\n", cdata );
                            }

                         }
                         else if ( xtypes[colno] == SPICE_DP )
                         {
                            ekgd_c ( colno, row, 1, &ddata, &null, &found );

                            if ( null )
                            {
                               printf( "<Null>\n" );
                            }
                            else
                            {
                               printf( "%f\n", ddata );
                            }

                         }
                         else if ( xtypes[colno] == SPICE_INT )
                         {
                            ekgi_c ( colno, row, 1, &idata, &null, &found );

                            if ( null )
                            {
                               printf( "<Null>\n" );
                            }
                            else
                            {
                               printf( "%d\n", idata );
                            }

                         }
                         else
                         {

                            /.
                            The item is a time value.  Convert it
                            to UTC for output.
                            ./
                            ekgd_c ( colno, row, 1, &tdata, &null, &found );

                            if ( null )
                            {
                               printf( "<Null>\n" );
                            }
                            else
                            {
                               et2utc_c ( tdata, "C", 3, TIMLEN, utcstr );
                               printf( "%s\n", utcstr );
                            }

                         }

                         /.
                         We're done with the column having index `colno'.
                         ./
                      }

                      /.
                      We're done with the row having index `row'.
                      ./
                   }

                   /.
                   We either processed the query or had an error.
                   ./
                }

                /.
                We either parsed the SELECT clause or had an error.
                ./
             }

             return ( 0 );
          }

          When this program was executed on a Mac/Intel/cc/64-bit
          platform, the output was:

          ROW =  0
            VIKING_SEDR_DATA.IMAGE_NUMBER  : 25837050
            VIKING_SEDR_DATA.IMAGE_ID      : 168C09
            VIKING_SEDR_DATA.PLATFORM_CLOCK: 119.880000
            VIKING_SEDR_DATA.IMAGE_TIME    : 1976 JUN 16 16:50:55.925

          ROW =  1
            VIKING_SEDR_DATA.IMAGE_NUMBER  : 25837051
            VIKING_SEDR_DATA.IMAGE_ID      : 168C10
            VIKING_SEDR_DATA.PLATFORM_CLOCK: 119.270000
            VIKING_SEDR_DATA.IMAGE_TIME    : 1976 JUN 16 16:51:00.269

          ROW =  2
            VIKING_SEDR_DATA.IMAGE_NUMBER  : 25840344
            VIKING_SEDR_DATA.IMAGE_ID      : 168C11
            VIKING_SEDR_DATA.PLATFORM_CLOCK: 119.880000
            VIKING_SEDR_DATA.IMAGE_TIME    : 1976 JUN 16 20:56:53.051

          ROW =  3
            VIKING_SEDR_DATA.IMAGE_NUMBER  : 25840345
            VIKING_SEDR_DATA.IMAGE_ID      : 168C12
            VIKING_SEDR_DATA.PLATFORM_CLOCK: 119.270000
            VIKING_SEDR_DATA.IMAGE_TIME    : 1976 JUN 16 20:56:57.395

          ROW =  4
            VIKING_SEDR_DATA.IMAGE_NUMBER  : 25843638
            VIKING_SEDR_DATA.IMAGE_ID      : 169C01
            VIKING_SEDR_DATA.PLATFORM_CLOCK: 119.880000
            VIKING_SEDR_DATA.IMAGE_TIME    : 1976 JUN 17 01:02:50.177

          ROW =  5
            VIKING_SEDR_DATA.IMAGE_NUMBER  : 25843639
            VIKING_SEDR_DATA.IMAGE_ID      : 169C02
            VIKING_SEDR_DATA.PLATFORM_CLOCK: 119.270000
            VIKING_SEDR_DATA.IMAGE_TIME    : 1976 JUN 17 01:02:54.521

          ROW =  6
            VIKING_SEDR_DATA.IMAGE_NUMBER  : 25846934
            VIKING_SEDR_DATA.IMAGE_ID      : 169C03
            VIKING_SEDR_DATA.PLATFORM_CLOCK: 120.140000
            VIKING_SEDR_DATA.IMAGE_TIME    : 1976 JUN 17 05:08:56.263

          ROW =  7
            VIKING_SEDR_DATA.IMAGE_NUMBER  : 25846935
            VIKING_SEDR_DATA.IMAGE_ID      : 169C04
            VIKING_SEDR_DATA.PLATFORM_CLOCK: 119.520000
            VIKING_SEDR_DATA.IMAGE_TIME    : 1976 JUN 17 05:09:00.607

          ROW =  8
            VIKING_SEDR_DATA.IMAGE_NUMBER  : 25848026
            VIKING_SEDR_DATA.IMAGE_ID      : 169C05
            VIKING_SEDR_DATA.PLATFORM_CLOCK: 120.140000
            VIKING_SEDR_DATA.IMAGE_TIME    : 1976 JUN 17 06:30:28.424

          ROW =  9
            VIKING_SEDR_DATA.IMAGE_NUMBER  : 25848030
            VIKING_SEDR_DATA.IMAGE_ID      : 169C09
            VIKING_SEDR_DATA.PLATFORM_CLOCK: 120.140000
            VIKING_SEDR_DATA.IMAGE_TIME    : 1976 JUN 17 06:30:46.174

          ROW =  10
            VIKING_SEDR_DATA.IMAGE_NUMBER  : 25848032
            VIKING_SEDR_DATA.IMAGE_ID      : 169C11
            VIKING_SEDR_DATA.PLATFORM_CLOCK: 120.140000
            VIKING_SEDR_DATA.IMAGE_TIME    : 1976 JUN 17 06:30:55.168
#### Restrictions
       None.
#### Literature_References
       None.
#### Author_and_Institution
       N.J. Bachman        (JPL)
       J. Diaz del Rio     (ODC Space)
#### Version
       -CSPICE Version 1.2.0, 02-AUG-2021 (JDR)

           Changed the input argument name "lenout" to "cdatln" for consistency
           with other routines.

           Edited the header to comply with NAIF standard. Added
           complete code examples.

       -CSPICE Version 1.1.0, 09-JUL-1998 (NJB)

           Bug fix: now uses local logical variable to capture the
           error flag value returned by the underlying f2c'd routine.

       -CSPICE Version 1.0.0, 27-MAR-1998 (NJB)

           Based on SPICELIB Version 1.1.0, 07-JUL-1996 (NJB)
#### Index_Entries
       fetch element from character column entry
#### Link to routine ekgc_c source file ekgc_c.c

    Fri Dec 31 18:41:05 2021