- Abstract
Read the double precision data bounded by two addresses within
a DAF.
Deprecated: This routine has been superseded by dafgda_c and
dafgsr_c. This routine is supported for purposes of backward
compatibility only.
- Required_Reading
DAF
- Keywords
FILES
- Brief_I/O
Variable I/O Description
-------- --- --------------------------------------------------
handle I Handle of a DAF.
begin,
end I Initial, final address within file.
data O Data contained between begin and end.
- Detailed_Input
handle is the handle of a DAF.
begin,
end are the initial and final addresses of a contiguous
set of double precision numbers within a DAF.
Presumably, these make up all or part of a particular
array.
Note that CSPICE DAF addresses begin at 1 as in the
FORTRAN version of the SPICE Toolkit.
- Detailed_Output
data are the double precision data contained between
the specified addresses within the specified file.
- Parameters
None.
- Particulars
The principal reason that DAFs are so easy to use is that
the data in each DAF are considered to be one long contiguous
set of double precision numbers. You can grab data from anywhere
within a DAF without knowing (or caring) about the physical
records in which they are stored.
This routine has been made obsolete by the routines dafgda_c and
dafgsr_c. This routine is supported for reasons of backward
compatibility only. New software development should utilize
dafgda_c or dafgsr_c.
- Examples
The following code fragment illustrates the use of dafrda_c
to read data from an imaginary array. The array begins with a
directory containing 11 epochs. Each pair of epochs bounds
an interval, and each interval is covered by a set of eight
osculating elements.
#include "SpiceUsr.h"
.
.
.
dafus_c ( sum, nd, ni, dc, ic );
begin = ic[4];
end = ic[5];
dafrda_c ( handle, begin, begin+10, epochs );
for ( i = 0; i < 10; i++ )
{
if ( ( et > epochs[i] )
&& ( et < epochs[i+1] ) )
{
offset = ic[4] + 11 + (i - 1) * 8;
dafrda_c ( handle, offset+1, offset+8, elements );
return;
}
}
- Restrictions
1) This routine is deprecated. See the routines dafgda_c and
dafgsr_c.
- Exceptions
1) If `begin' is zero or negative, the error SPICE(DAFNEGADDR)
is signaled.
2) If the begin > end, the error SPICE(DAFBEGGTEND)
is signaled.
3) If the file associated with `handle' is not of the native
binary file format this routine signals the error
SPICE(UNSUPPORTEDBFF).
4) If `handle' is invalid, routines in the call tree of dafrda_c
signal an appropriate error.
- Files
None.
- Author_and_Institution
N.J. Bachman (JPL)
W.L. Taber (JPL)
F.S. Turner (JPL)
R.E. Thurman (JPL)
I.M. Underwood (JPL)
- Literature_References
None.
- Version
-CSPICE Version 1.0.1, 27-OCT-2003 (NJB) (FST)
The header now states that this routine is deprecated.
The Exceptions header section has been extended.
Minor additional header updates were made.
-CSPICE Version 1.0.0, 14-DEC-1999 (NJB) (RET) (IMU) (WLT)
- Index_Entries
read data from daf address
- Link to routine source